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Xenon Hyperpolarizer, Model 9800

1. seen 9 Viewing Polarimetry Inventory ORTIGUOE caccia nettnntn repairs 9 Viewing Polarimetry COnfIQUEAMIQI iacitr terere tti tek Foe ener bucks boire bunk bertus 10 Polarimetry Error Messages cista tentent treni terae ica te c Denn 11 Revision HISTON PEE 12 Troubleshooting Revision HISTON REESE 4 Accumulation Data Sheet Revision HISTON eein a a E NE E R E EEE NE NEER 1 Polarizer Interlocks Removing and Replacing Interlocked Panels sen 2 Cart EMP AN fe T 2 OVON COV X T dee calee 2 Interlock Troubleshooting a aei Geraint aneneen ERtrte ERR 3 Revision HISTO Yas i icm re re Pe iecit repre e a Ere e cade po be top ERR 4 Rubidium MSDS Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 1 of 8 Introduction Welcome to Polarean s 9800 Xenon Polarizer Using the Xenon polarizer a trained operator can polarize Xe by completing the following steps described briefly below 1 The operator through choice of gas flow rate and accumulation time determines gas quantity and production rate 2 During production an input mixture containing 2 Xe continuously flows from the storage tank to the polarization chamber where it is polarized via spin exchange optical pumping 3 Upon exiting the chamber polarized Xenon is frozen into the liquid nitrogen cooled
2. Model 9800 Operating and Service Manual Chapter 6 Operating the Polarizer Version 1 2 Page 1 of 4 Operating the Polarizer To operate the polarizer power up the polarizer and the laser The following sections explain how to operate each component Polarean recommends that the polarizer be powered up only once upon installation and then left in stand by mode in between uses Note To complete some of the described procedures certain tasks need to be performed in software applications For more information on software applications see Appendix A Powering Up the Polarizer To power up the polarizer complete the following steps 1 Verify the following the polarizer has proper input power the compressed air source is attached to the oven air inlet and the pressure is set to 20 25 psig the source of commercial grade nitrogen at 5 10 psig is attached to the cold finger N2 inlet the source of UHP purge gas 99 999 nitrogen or helium is attached to the xenon manifold and the pressure is set to 20 25 psig the Xe mixture supply is attached 2 Turn the switch on the Power Control Panel to Start 3 Turn the Temperature Interlock Unit power red switch to On 4 Verify that the pressure and mass flow readouts on the cartridge are both on Model 9800 Operating and Service Manual Chapter 6 Operating the Polarizer Version 1 2 Page 2 of 4 5 Enable power to the laser 6 Turn on th
3. Model 9800 Operating and Service Manual Version 1 2 Problem Appendix B Troubleshooting Page 2 of 4 Solution Action The displays for the digital pressure transducer and or mass flowmeter on the cartridge are blank Verify that the T I Unit is plugged in and turned on Verify that the 25 pin cable is connected securely between the T I Unit and the back of the cartridge The polarization level of the gas recovered after thawing is lower than expected Verify the oven controller maintained a stable temperature i e within 1 C of set point during accumulation Check rubidium and cell appearance Verify the Helmholtz coil power supply is on and at the correct setting Verify the laser is working and aligned properly Verify that the laser transmission was in the correct range during collection lt 50 for broad and lt 15 for narrowed lasers Interval of time may be too long between dispensing gas and signal acquisition should be under 5 minutes Collection container may have been left in area of high B field gradients high magnetic field or near a metal object Rubidium in the cell body looks bad gold color yellow or brown edges or covered with a white film Replace the optical cell Call Polarean at 919 206 7900 and ask to speak to technical support Check for air leaks in the collection container Manifold pressure is too high or too low Reset the regulator on the Xe gas
4. P touch 3 8 clear tape Letters 24 pt Arial Black SS c c oo E 1 f j f Z S SS EE 1 Np mel b 4 ur V dd TT Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Abbreviations Page 6 of 8 The following table lists the abbreviations and acronyms that may be used in this manual Table 1 Abbreviations and acronyms Abbreviation Acronym Meaning C Celsius uW microwatt atm atmosphere cc cubic centimeter cm centimeter dB decibel G Gravitational acceleration ID Inner Diameter or inside diameter kw kilowatt LED Light Emitting Diode MSDS Material Safety Data Sheet mTorr milliTorr nm nanometer NMR Nuclear Magnetic Resonance OD Outer Diameter or outside diameter OFHC Oxygen Free High Conductivity PFA PerFluoroAlkoxy a material similar to Teflon psi Pounds per square inch psig Pounds per square inch gauge PTFE Poly Tetra Fluoro Ethylene aka DuPont Teflon Rb Rubidium RTD Resistance Temperature Detector Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 7 of 8 Abbreviation Acronym Meaning S
5. circuits Alert Tolerances Displays the diagnostic settings that determine at what level the Resonance Alert and T Alert notifications are activated Pulse Parameters Displays the settings that are applied when the pulse parameter from the Pulse Parameters drop down list box on the Data Acquisition view is selected Note This tab displays settings for each pulse parameter option Selecting a pulse parameter on this tab does not change the pulse parameter being used Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 11 of 12 Gas Sample Standards Displays the default settings for Sample Pressure and Sample Blend values Polarimetry Error Messages If there is a problem with either the polarimetry application configuration files or any operation involved in determining the polarization percentage a Failure Mode error message will be displayed as shown in Figure 15 IE Amersham Health Polarimetry Error Message Figure 15 Failure Mode error message In Failure Mode the following functionality is unavailable Spin Up Spin Down current studies are terminated e Acquiring data Changing Pulse Parameters Changing Sample Pressure or Sample Blend values If a Failure Mode error message is displayed write down the Error Number and the text contained in the error message and consult Polarean technical support for instructions Model 9800 Operating a
6. gauss Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 Page 5 of 6 Typical Settings Use the following typical settings when beginning the polarization process Table 2 Polarization settings Item Value Xe Mix Pressure 65 75 psig Purge Gas Pressure 5 20 psig Oven Air Pressure 20 25 psig Over Air Flow Rate 120 160 SCFH Cell Temperature 140 180 C Cold Finger N2 Pressure 5 10 psig Cold Finger Jacket Flow 4 SCFH Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 Page 6 of 6 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 Page 1 of 6 Installation The polarizer should be installed in a suitable location away from high traffic areas and close to the required utilities See Utility Requirements in Chapter 3 Security measures to prevent unauthorized use theft or damage to the unit are highly recommended a locked room proximity alarm or other measures Before you install any component of the polarizer please do the following 1 Verify that the shock or tip sensors on the packaging have not been activated due to rough handling during shipment 2 Carefully remove the external packaging from the polarizer Store the packaging for future use in case you must transport the polarizer by vehic
7. see Chapter 6 Close the Vacuum Isolate valve on the front panel Remove the vacuum pump access panel on the front of the polarizer Loosen and remove the QF16 flange clamp between the inlet filter and the vacuum bellows Break the connection and place the o ring on a clean surface Remove the drain plug protective cover on the pump housing below the sight glass to expose the drain plug valve Screw the mating connector from the oil drain hose onto the drain plug fitting until finger tight oil will start to flow through the hose once the connector is about halfway engaged Therefore verify the open end of the hose is in a drainage container Drain the warm oil into the basin until the flow reduces to a slight trickle and the sight glass on the pump is empty Disconnect the oil drain hose from the drain plug valve Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 8 10 11 12 13 14 15 16 Page 7 of 16 Replace the drain plug protective cover and hand tighten it Note Please dispose of used oil properly Remove the oil fill plug from the top of the pump housing above the sight glass Fill the pump with fresh hydrocarbon or synthetic rotary vane vacuum pump oil Leybold N62 or equivalent to a level between the Max and Min marks on the sight glass Replace the oil fill plug in the top of the pump housing Re connect the vacuum hose to the inlet filter Verify the
8. 10 20 psi Open the connection from the Xenon regulator to the Xenon tank until pressure on regulator begins to bleed down Allow pressure to bleed down to 0 on the regulator input gauge Purge gas flow will engage to maintain constant outward gas flow and prevent contamination of the regulator Remove the old tank and replace it with the new tank Secure the new tank with proper cylinder straps Tighten the connection from the regulator to the new tank until it is 1 full turn short of finger tight Allow purge gas to blow through the gas tank connection for one minute to minimize air contamination of the system Use a wrench to finish tightening the connection to the mixture tank Open the valve on the new tank Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 14 15 16 Page 12 of 16 Close the tank valve and monitor the regulator inlet pressure gauge for two minutes Note A drop in inlet pressure indicates a leak in the connection to the mixture tank If this occurs tighten the connection and repeat steps 12 and 13 If no leak is apparent open the valve on the tank fully Verify that pressure on the outlet side of the regulator is 75 psi on the gauge Open both Xenon and UHP N Regulator Isolate valves Replacing the UHP Nitrogen Tank 6 o ND gm Note Itis important to change the UHP nitrogen cylinder before it becomes completely empty 150 psig so that the syste
9. 12 13 14 15 16 17 18 Page 13 of 16 Close the UHP N HP Vent valve Open the UHP N Shutoff valve The pressure reading on the regulator input gauge should increase reflecting the pressure inside the UHP nitrogen tank Close the main valve on the UHP nitrogen tank If the pressure level on the regulator input gauge falls for more than 50 psig in one minute tighten the connections open close the main tank valve and repeat this step If the leak test passes successfully fully open the main valve on the UHP nitrogen tank Set the output of the UHP nitrogen regulator at 20 psig Slightly open the UHP N LP Vent valve until purge gas starts flowing through the orifice Let the purge gas bleed through the orifice for at least 1 minute This will flow any room air that may have got into the line back out into the room Close the UHP N LP Vent valve Open both Xenon and UHP N Regulator Isolate valves Re open the Cell Isolate valve that was closed in the first step Regenerating the Gas Purifier 1 2 Put on protective safety eyewear Verify that all valves are in the default configuration shown in the plumbing layout in Figure 5 Close the valve on the Xenon mixture tank but leave the Xenon regulator setting unchanged Check that all valves to the 10 psi UHP nitrogen purge gas supply are open Close the Cell Isolate valve on the front panel Open the Purifier Purge valve one turn then close it until
10. A note or an example contains information that is helpful but not crucial to the task at hand For example Note The indicator LED should be green Example Typing S in the name box does not yield all names beginning with S A warning contains information that if ignored may harm the operator or the equipment A list of standard warning symbols used in this manual is provided below Warning Symbols The following warning symbols may be used in this manual and or on the unit This symbol is intended to alert the operator to the presence of important operating and maintenance instructions surfaces that may cause burns to the skin A This symbol is intended to alert the operator to the presence of hot dangerous voltages that may be of sufficient magnitude to f This symbol is intended to alert the operator to the presence of constitute a risk of electric shock DANGER D This symbol is intended to alert the operator to the E CN danger of exposure to hazardous visible and invisible 3 laser radiation CLASS IV LASER PRODUCT Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 10 11 12 Polarean Inc 2500 Meridian Parkway Suite 110 Durham NC 27713 This product complies with 21 CFR 1040 10 and 1040 11 at the time of manufacture Page 4 of 8 This symbol is intended to alert the operator to the danger of exposure to magnetic fields This symbol
11. Desired Volume L Time of Run min Flow Rate L Min for 1 Xenon mixture Xenon collection times in excess of 60 minutes typically result in lower overall polarization due to solid 2 Xe relaxation effects However high flow rates can also reduce polarization because of decreased optical spin pumping time within the cell therefore it is important to strike a sensible balance between these two effects A reasonable setup for 1 L of gas would be to accumulate for 60 minutes at 1 67 slm Please refer to Figure 1 Chapter 4 for a set of representative polarizer performance curves 4 Place the funnel in the liquid nitrogen inlet fitting then perform the following a Pourliquid nitrogen into the funnel to begin accumulation b After the rapid nitrogen boil off stops fill the dewar to the top g This is the start time for Xenon accumulation c If desired record this start time on a data sheet or else start a timer for the accumulation to ensure collecting accurate volumes 5 Adjust the flow controller as needed to maintain the desired flow rate 6 Adjust the oven controller temperature as needed to maintain the laser transmission just below 50 for broad lasers or 15 for narrowed lasers Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 10 11 12 Page 5 of 10 Maintain the liquid nitrogen level in the dewar typically by topping it off every 10 minutes Check the syste
12. Page 5 of 5 LABEL STATEMENT Dangerous when wet SECTION 15 REGULATORY INFORMATION U S FEDERAL REGULATIONS TSCA TOXIC SUBSTANCE CONTROL ACT All components of this product are listed in the U S Environmental Protection Agency Toxic Substances Control Act Chemical Substance Inventory 313 REPORTABLE INGREDIENTS Not listed SECTION 16 OTHER INFORMATION DISCLAIMER This information should be used only as a supplement to other information This information is furnished without warranty The use of the product in non conformance with this Material Safety Data Sheet or in combination with any other product or process is the responsibility of the user Source Atlantic Metals amp Alloys LLC 100 D Benton St Stratford CT 00615 MSDS DATE 09 01 2011 The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide Polarean shall not be held liable for any damage resulting from handling or from contact with the above product Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc
13. Service Manual Chapter 7 Polarizing Xenon Version 1 2 10 11 12 13 14 15 16 17 18 19 Page 3 of 10 Close the Flow Isolate valve to isolate the cold finger Place the empty liquid nitrogen dewar directly below the cold finger then do the following a Raise the dewar around the cold finger b Insert the shelf below the dewar to hold the dewar in position c Verify that the liquid nitrogen inlet located on top of the housing is inserted into the dewar d Close the cryogen access door Open the Xenon mixture supply tank and set the regulator on the Xenon mixture tank to 75 psig Slightly open the Cell Out valve to pressurize the outlet manifold at a rate of 1 to 2 psi per second After the pressure reaches 75 psig open the Cell Out valve fully Turn on the oven airflow and use the float type flow meter to adjust the airflow to 120 160 SCFH Press Reset on the interlock AN Both indicators LEDs should be green before proceeding Flip the audio alarm toggle switch On if you are using a door or curtain interlock connected to the polarizer Set a slight xenon gas flow rate by performing the following steps a Close the Flow Control valve with only two fingers until resistance is barely felt do not over tighten b Open the Flow Control valve one half turn c Open the Flow Shut off valve 1 turn d Set the flow rate to 0 1 SLM using the Flow Control valve
14. Severe thermal and chemical burns will result CHRONIC HEALTH HAZARDS No information available on long term chronic effects CARCINOGENICITY OSHA No NTP No IARC No SECTION 4 FIRST AID MEASURES EYES Immediately flush the eyes with copious amounts of water for at least 10 15 minutes Subject may need assistance in keeping their eye lids open Seek medical assistance immediately SKIN Wash the affected area with water for at least 15 minutes Remove contaminated clothes if necessary Seek medical assistance if irritation persists INGESTION Seek medical assistance immediately Keep the subject calm If subject conscious give water Do not induce vomiting unless directed to do so my medical personnel INHALATION For dust or fume remove the subject to fresh air Closely monitor for signs of respiratory problems such as difficulty in breathing or coughing In such cases seek medical assistance immediately SECTION 5 FIRE FIGHTING MEASURES FLAMMABLE LIMITS Not Applicable FLASH POINT Not Applicable AUTOIGNITION TEMPERATURE No data EXTINGUISHING MEDIA Class D metal fire agent dry salt or sand SPECIAL FIRE FIGHTING PROCEDURES If this product is involved in a fire fire fighters should be equipped with a NIOSH approved positive pressure self contained breathing apparatus UNUSUAL FIRE AND EXPLOSION HAZARDS Pyrophoric solid May self ignite Evokes flammable hydrogen with water Model 9800 Operating and Service
15. and outlet ports finger tight With the vacuum on open the Evacuate Outlet General Isolate and Flow Isolate valves to evacuate the cold finger Close the Evacuate Outlet valve and open the Purge Outlet valve for 2 seconds then close again Open the Evacuate Outlet valve and allow the vacuum to fall as far as possible Continue to vacuum for 5 minutes Repeat steps 12 13 twice more to remove adsorbed water from the interior surface of the cold finger Close the Evacuate Outlet valve and open the Purge Outlet valve for 2 seconds to pressurize the cold finger then close it again Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 9 The Temperature Interlock Unit Version 1 2 Page 1 of 2 The Temperature Interlock Unit The Temperature Interlock T I Unit is installed in the Xenon Polarizer for safety and convenience It performs the following functions The internal circuitry controls the temperature of the cell by controlling the input power to a forced air heater It provides regulated 12VDC and 24VDC power to the mass flow meter and digital pressure transducer in the cartridge It disables laser emission if the optional external interlock circuit is tripped An oven airflow switch stops laser emission and turns off the oven air heater when the oven airflow drops below a safe level 7110 SCFH To reset the oven air interlock so
16. cryogenic accumulator while residual He and N in the mixture are vented into the atmosphere 4 After the desired quantity of solid Xenon has been accumulated the Xenon is sublimated and vented into an appropriate container These steps are explained in detail in the rest of this manual Note A trained operator must start stop and periodically monitor the polarization process Using This Manual The Xenon Polarizer Operating and Service Manual provides step by step instructions for installing and servicing the Xenon polarizer as well as performing all standard user procedures These tasks include e Polarizer specifications Operational requirements Installation procedures Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 2 of 8 Powering up the polarizer Turning the laser on and off e Polarizing collecting and thawing Xenon Basic maintenance procedures Chapter Guide This manual is divided into the following chapters Chapter 1 Introduction introduces the Xenon Polarizer and explains how to use this manual e Chapter 2 Safety and Precautions explains emergency shutdown procedures for the polarizer e Chapter 3 Operational Requirements lists all operational requirements for the polarizer Chapter 4 Polarizer Specifications gives a summary of the polarization process and describes each component e Chapter 5 Installation lists step by step pr
17. is intended to alert the operator to the presence of hazardous laser radiation inside the unit This is the laser product explanatory label and IEC 60825 1 conformance declaration This symbol is intended to alert the operator to the danger of exposure to hazardous visible and invisible laser radiation if the housing is open during use This symbol is intended to alert the operator to the danger of exposure to hazardous visible and invisible laser radiation if the housing is open and the protective interlock is defeated This symbol is intended to alert the operator to the danger of exposure to hazardous visible and invisible laser radiation if the housing is open during use This is the declaration of conformance of the product to 21 CFR 1040 10 and 1040 11 at the time of manufacture This symbol is intended to alert the operator that the timing or precision of a specific step in the operating procedures is critical to achieving a high polarization yield or obtaining an accurate estimate of polarization level Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 5 of 8 Warning Symbol Locations The diagrams on the next page show the location of warning labels affixed to the Xenon polarizer Operations Manual Service Manual LABEL VACUUM DISPLAY Material P touch 3 8 clear tape Letters 24 pt Arial Black LABEL VACUUM ISOLATE VALVE Material
18. mixture tank Verify the pressure in the Xe gas mixture tank is above the regulator set pressure Verify you have observed the correct valve setup open valves are open and closed valves are closed Pressure in outlet manifold drops during collection Increase nitrogen warming jacket flow rate to thaw Xenon ice clog in the cold finger Check pressure in Xe mixture supply tank and replace tank if necessary Laser will not start Check the Temperature Interlock Unit If either Model 9800 Operating and Service Manual Version 1 2 Problem Appendix B Troubleshooting Page 3 of 4 Solution Action or both of the red interlock lights are on press Reset Check the room interlock or the room interlock bypass if installed Pressure in vacuum manifold is too high Verify the vacuum pump is on and Vacuum Isolate valve is open Verify that all valves are in their initial configurations Check Chemthread connections on cold finger for tightness Gas ballast on vacuum pump should be set to 44 0 Drain any oil collected in the vacuum pump exhaust filter Model 9800 Operating and Service Manual Appendix B Troubleshooting Version 1 2 Page 4 of 4 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Appendix C Accumulation Data Sheet Version 1 2 Page 1 of 2 Accumulation Data Sheet The following
19. or together Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 8 of 12 Averaging This is used to reduce the background noise levels for random and near random sources of noise ie not always at the same frequency The effect of this is only visible in the Frequency domain graph The FT processed results of the selected number of acquisitions will be summed and displayed as a single acquisition Random noise will tend to be reduced in proportion to the square root of the number of averages selected out while the signal from polarized gas will be increased To turn on averaging click the switch marked Average see Figure 10 in the bottom left corner of the Polarimetry software window the indicator on the switch should turn bright green and input the number of averages desired and the time between measurements seconds Averaging will be performed every time data is acquired depending on the number of averages selected this can greatly increase the time required for data acquisition Figure 10 Averaging control interface To turn off averaging click the switch marked Averaging again the indicator on the switch should turn dark green or black Broadening This algorithm applies an exponential amplitude decay function to the time domain signal to reduce levels of coherent or non random background noise The value input in the interface determines the value of the exponen
20. page contains an optional Accumulation Data Sheet you can use to record the collection information and observe trends in polarizer performance One sheet can record one or two collections Print or photocopy this sheet as often as you need to Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Appendix C Accumulation Data Sheet Model 9800 Operating and Service Manual Version 1 2 Page 2 of 2 uge Aw 4 uonezue od 10 984 uoneiqije Sjueuliuo 2 d euis eJnsseJgd MEU S0d sju wwog INSS Jd e nog V U a puAg ueDoniN dHN Jepuij 9 pu jg uouax uolssiwsued uw MO 4 aiNSSald 1403e10dQ ysiul4 uone nunooy Uejs uonejnunooy jeeus geq uonejnuino2y EX DUET TE UT HS IR TESTI qi1efqng uononpoag Jo ejeq yoyeg enbium Model 9800 Operating and Service Manual Appendix D Polarizer Interlocks Version 1 2 Page 1 of 4 Polarizer Interlocks The Polarean Xenon polarizer conforms to the current applicable ANSI standards for a Class 1 laser product Because there is a Class 4 laser system embedded in the machine great care should be taken when operating maintaining and servicing the machine Protective housing panels designed to be removed by users operators to perform routine maintenance operations have been fitted with fail safe keyed interlock switches Enabling laser emission with the protective housing panels
21. pipe fitting The air supply moisture content should be less than 0 01 Power outlet required at 30208V US standard 47 63 Hz rated at 20 A per phase with neutral and equipped with a receptacle type NEMA L21 30R Installation Requirements The following items are required for installation of the Xenon polarizer Wall mount cylinder holder rack with capacity to house three compressed gas cylinders Dry nitrogen gas cylinder UHP nitrogen or helium 99 995 gas cylinder Xenon gas mixture cylinder 176 xenon recommended Two UHP grade CGA 580 pressure regulators and one standard two stage CGA 580 pressure regulator along with the necessary fittings and tubes to connect the three compressed gas cylinders to the polarizer If a Xenon Gas Manifold is procured along with the polarizer this item will not be required Operating Requirements Safety glasses Laser attenuating eyewear OD gt 4 at 795nm for each maintenance technician 4 L liquid nitrogen transfer dewar Synthetic vacuum oil 1 gal Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 Page 1 of 6 Polarizer Specifications This chapter lists the various components of the polarizer their descriptions their physical makeup and their performance specifications Polarizer Description The following list describes the physical components of t
22. place in this view Navigating the Data Acquisition View The Data Acquisition view contains the following features Pulse Parameters drop down list box defines the type of gas Helium or Xenon and the type of system Polarizer or Polarimetry Station being used e Acquire button measures and displays the level of polarization of the gas at that exact moment e Exit button exits the polarimetry application Similarly there are two tabs on the Data Acquisition view Spin Up Down Tab Allows running a study of the polarization levels over a period of time See Running a T1 Study FID Analysis Tab Allows revising the gas sample setting values sample pressure and sample blend only if specifically instructed to in an SOP See Changing Sample Pressure and Blend Pulse Parameters Model 9800 Operating and Service Manual Appendix A Usirdr tpedownplis ibApplications Version 1 2 Page 6 of 12 I Polarimetry v4 3 Eile Parameters View Xenon Polarizer Signal III MEM RN Figure 9 The polarimetry window Data Acquisition view Gas Sample Settings Pressure Blend and Pulse Parameters Gas Sample Settings describe the gas being used in your system in a cell or bag These values are important because they are used in determining the level of polarization in your gas The Gas Sample Settings comprise the following Pulse Parameters Set This defines the type of g
23. start the four retaining screws on each side in the holes in the sides of the oven Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 6 of 16 10 Tighten the mounting screws only enough to compress the o ring gasket to 11 one half its original thickness All four screws on each side should be uniformly snug Verify that the radiant laser power emission levels around the oven top are within Class 1 laser product limits See Verifying Beam Path Protective Housing Integrity Vacuum Pump Maintenance Checking the Oil Level Condition in the Vacuum Pump Observe the oil color and level in the sight glass on the front of the vacuum pump e If the oil level is below the Min marking add oil as necessary to keep the level between the Max and Min markings on the housing If the oil looks milky bubbles are acceptable or dark amber in color change the pump oil as described in the following section e If there is a puddle of oil in the intake or exhaust traps or under the body of the vacuum pump contact a Polarean service representative A fine misting is acceptable Changing the Oil in the Vacuum Pump This procedure should be performed every six months or as needed Note Use an oil basin 0 5 L and an oil drain hose with the proper mating 1 2 3 4 connector for the drain plug fitting to collect the old pump oil Perform the polarizer Shut down procedure
24. that you can turn on the laser and oven air heater you must turn the flow rate above 130 SCFH briefly After this you can set the flow to the desired rate If either safety interlock is tripped resulting in a Fault condition the following events occur The laser emission is disabled An amber light on the front panel of the T I Unit indicates which circuit has been interrupted The hour timer begins counting the amount of time elapsed since the interlock has been tripped The alarm will sound if the alarm switch is in the On position To turn off the alarm flip the Alarm switch to Off Then hit the Reset button to the right of the Alarm switch to reset the interlocks and re initiate the laser emission Merely switching the Alarm to Off does not reset the interlock and does not enable you to use the laser or heater again If power to the T I Unit turns off both switches are automatically set to the tripped position After a power down or power failure you must hit the Reset button on the front panel before using the polarizer again Model 9800 Operating and Service Manual Chapter 9 The Temperature Interlock Unit Version 1 2 Page 2 of 2 DANGER gt If at any time the Emission light on the laser control panel is se on with either of the interlocks in the Fault condition shut Twwwww down the polarizer immediately and contact a Polarean cuas IVLASER PRODUCT service representative Controlli
25. the polarizer Operators must be trained in the proper handling of cryogenic liquids and have the appropriate safety equipment DANGER D All on site maintenance personnel must be trained by ETT certified Polarean personnel in order to maintain the ies polarizer Hazardous Class 4 laser exposure could otherwise CLASS IV LASER PRODUCT re sult The key s that control the laser power at the control panel should be accessible only to trained operators and should be removed from the control panel when the laser is not in use Utility Requirements The installation site should meet the following utility requirements Minimum footprint required for the Xenon polarizer is 9 5 x 7 A minimum of 2 of space is required between the polarizer and any wall and at least 3 feet of space in front of the polarizer Ferrous materials must be kept at least 3 from the polarizer Model 9800 Operating and Service Manual Chapter 3 Operational Requirements Version 1 2 Page 2 of 2 Room air conditioning required with a minimum cooling capacity of 18 000 BTUH The air conditioning unit should be capable of maintaining the room temperature at 22 2 C 68 75 F with a maximum relative humidity of 50 The polarizer room should have its own dedicated temperature humidity control system Source of compressed air with a minimum required pressure of 20 psi capable of providing a minimum of 4 SCFM air flow preferably through a 14
26. the flow rate reads 0 30 L min on the mass flowmeter readout Let the purge gas flow for 10 minutes at this rate On the Temperature Interlock Unit front panel do the following a Verify the Heat switch is Off d Liftthe cover on the Activate Purifier switch and press the red button until the light comes on e Verify the Purifier Control set point is set at 350 C press the SEL key to toggle between set point and temperature reading Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 14 of 16 13 Allow the purifier temperature to reach the set point The purifier should be heated at 350 C for 3 hours with a constant flow of purge gas at 0 30 L min 14 After the purifier is regenerated lift the cover and press the Activate Purifier button until the light goes off 15 Allow the purifier to cool for 30 minutes with a 0 30 L min purge gas flow continuing through it 16 Close the Purifier Purge valve 17 Open the Xenon mixture tank valve 18 Re pressurize the optical cell before resuming gas polarization as described in Pressurizing the Optical Cell and open the Cell Isolate valve Cleaning the Cold Finger Because the cell is operating at high temperature and under continuous flow some of the rubidium vapor can leave the cell and condense in the cold finger This will appear as a white film on the inside walls of the cold finger which can be removed by rinsing the c
27. 5 atstre terne bntu uc bmccub tic iner td Thawing Frozen Xenon sesser Preparing a Consecutive Batch esses FROVISIOM History Ee nete re tein Cold Finger Operations Belaching the Cold FITQUE sait iisque Reni hia Retreats Attaching the Cold Finger eee Revision HiStats aaa The Temperature Interlock Unit Controlling Cell Temperature eee Connecting an External Interlock Optional CE Tels e Cleaning and Transporting the Polarizer Cleaning the Polarizer occorre aen aec Moving the Polarizer ssseenn Preparing the Polarizer for Moving see Shutting Down the POlBfIzGI uode etai riores ReVISION HISTOTY irn etie lo rene tete i pere tn Rs Maintenance Procedures Maintenance Schedule sssseee Plumbing Layout 1 ted reete erts Protective Housing Maintenance see Checking for the Presence and Integrity of Protective Housing Verifying Beam Path Protective Housing Integrity Replacement of Protective Housing Gaskets Vacuum Pump Maintenance sss Checking the Oil Level Condition in the Vacuum Pump Changing the Oil in the Vacuum Pump s Optical Cell Maintenance sssssseennes Depressurizing the Optical Cell P
28. AN Never over tighten the Flow Control valve as it can be damaged Power up the laser and then start the Polarimetry software as described in Chapter 6 Turning the Laser On and Off Set the oven controller temperature to the final temperature from the last operation of the polarizer if it is a new cell or the polarizer has not been run in more than 2 weeks set it initially to 150 C and enable power to the air Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 4 of 10 heater the switch to the left of the oven temperature controller on the T I unit Verify that the cell temperature begins to rise on the oven temperature display within 2 minutes Collecting Hyperpolarized Xenon Liquid nitrogen can cause severe frostbite if it comes in contact with skin eyes or clothing Always use appropriate caution and protective gear 1 Start the nitrogen flow to the cold finger warming jacket by ensuring the supply gas is open and adjusting the flow to 4 SCFH read at the center of the ball on the small float type flow meter 2 Adjust the oven controller temperature to maintain a lt 50 transmission for broad lasers gt 2 nm FWHM or lt 15 transmission for narrowed lasers The temperature should be as low as possible while still maintaining transmission below this threshold 3 Use the Flow Control valve to adjust the Xenon mixture flow to the suggested rate using the following formula 100 x
29. Allow the oven temperature and flow rates to stabilize and adjust them accordingly to return to standard operating settings 4 Raise the empty liquid nitrogen dewar back into place 5 Resume Collecting Hyperpolarized Xenon at step 5 and continue to accumulate a batch as described in previous sections Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 9 of 10 Resetting the Polarizer Reset the polarizer to return it to an idle stand by mode 1 Optional After cell temperature drops below 60 C turn off the flow of compressed air to the oven 2 Optional Turn the laser control key on the laser control panel to the Off position 3 Close the Xenon mixture supply tank 4 Turn off the vacuum pump The following components can remain powered up for future runs e Helmholtz power supply Temperature Interlock Unit Computer Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 10 of 10 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 8 Cold Finger Operations Version 1 2 Page 1 of 2 Cold Finger Operations m B SB m D To remove rubidium buildup remove and rinse the cold finger with distilled water after approximately 20 runs Dry the cold finger by flowing commercial grade nitrogen or compressed air through it Detaching the Cold Finger V
30. CFH Cubic feet per hour at standard conditions SCFM Cubic feet per minute at standard conditions sim Standard liters per minute torr A unit of pressure equal to 1 760 of an atmosphere about 133 3 pascals UHP Ultra High Purity UPS Uninterruptible Power Supply V Volts VAC Volts of alternating current VDC Volts of direct current Xe Xenon 129Xe The isotope of Xenon with atomic weight 129 Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 8 of 8 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 2 Safety and Precautions Version 1 2 Page 1 of 4 Safety and Precautions AN All operators must read this guide before operating the polarizer or any piece of equipment contained within Operation of the Xenon polarizer without the proper training is prohibited and could cause irreversible damage to the individual the facility and the polarizer EMERGENCY SHUTDOWN INSTRUCTIONS To shut down the polarizer press the red Emergency Off button on the power distribution panel at the top center of the polarizer AN If the optional uninterruptible power supply UPS is installed the emergency shutdown will not cut power to the computer monitor or any other device connected to the on board UPS As long as the UPS is on 120 VAC is provided to these systems To shutdown the UPS and all connected devices pre
31. Initial release Polarean Inc 1 10 2013 UHP N tank replacement procedures added Polarean Inc 3 14 2013 UHP N tank replacement procedures revised to Polarean Inc reflect the gas handling manifold valve labels Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 1 of 12 Using the Computer Applications There are two software applications the operator uses to operate the Xenon polarizer Each application is responsible for a different set of tasks Laser control software IntegraSoft The operator will use this application to start and stop laser emissions and to check on operating parameters such as diode temperature Polarimetry software Polarimetry application version 4 1 or above This is a custom application to monitor various aspects of polarizer performance Periodically during optical pumping the operator may want to verify the presence of polarized Xenon in the optical cell or need to monitor the amount of laser light being transmitted through it Note Due to the high field strength and proximity of the cold finger to permanent magnets measurements of the level of Xenon polarization in the optical cell are not reliable even if the system will report them The following sections explain how to navigate each application and complete their associated tasks The Laser Control Application IntegraSoft for Systems with Spectra Physics Lasers The
32. IntegraSoft application is developed and maintained by Spectra Physics Newport Corporation but a copy is included with each polarizer for laser operation and basic functionality is described below The IntegraSoft interface supports a single Spectra Physics Integra laser system but does not include optical spectral information This is because the Integra laser system integrated into the polarizer is spectrally narrowed and wavelength controlled by a variable holographic grating VHG which is not operator adjustable If you suspect a laser performance failure please contact a Polarean service representative Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 2 of 12 Starting the Interface 1 Verify that the laser is powered on that the key is in the Enable position and that all of the interlocks show Normal green on the T I box 2 Click the IntegraSoft icon Miia on the computer desktop to open the Port Control window shown in Figure 6 The Port Control window may appear under the main application window but can be brought to the foreground by clicking Port Control in the task bar 3 Verify that Port 1 and 9600 Baud rate are selected and click OK Port Control Baudrate Figure 6 IntegraSoft Port Control window 4 Inthe IntegraSoft main window click Communication and select Open Port from the drop down menu The window will display the m
33. Manual Appendix E Rubidium MSDS Version 1 2 Page 3 of 5 HAZARDOUS DECOMPOSITION PRODUCTS If involved in a fire burning metal may produce irritating fumes of calcium oxide SECTION 6 ACCIDENTAL RELEASE MEASURES ACCIDENTAL RELEASE MEASURES In case of a spill the material should be covered with dry soda ash limestone or sand Place in open container Flammable hydrogen evolution may occur if wet SECTION 7 HANDLING AND STORAGE HANDLING AND STORAGE Handle and store in a tightly sealed container under an inert atmosphere of argon SECTION 8 EXPOSURE CONTROLS PERSONAL PROTECTION VENTILATION Handle in an efficient fume hood RESPIRATORY PROTECTION If ventilation is not available a respirator should be worn The use of respirators requires a Respirator Protection Program to be in compliance with 29 CFR 1910 134 EYE PROTECTION Always wear approved chemical splash proof goggles SKIN PROTECTION Wear protective clothing and gloves Consult with glove manufacturer to determine the proper type of glove OTHER PROTECTIVE CLOTHING OR EQUIPMENT Prepare for the possibility of fire WORK HYGIENIC PRACTICES Follow usual precautions for handling chemicals Do not use near any type of food feed tobacco or beverage Remove all soiled and contaminated clothing prior to leaving work Wash hands before eating smoking or using bathroom facilities before breaks and at the end of work EXPOSURE GUIDELINES Remove all soiled and cont
34. Xenon Hyperpolarizer Model 9800 Operating and Service Manual Version 1 2 Part 03662 POLAREAN Copyright Information This manual and its contents designs drawings and specifications are considered Proprietary or Confidential information by Polarean Inc Any unauthorized reproduction or dissemination of the information contained herein is strictly prohibited without the express consent and written authorization by Polarean Inc Xenon Polarizer Operating and Service Manual Copyright 2013 Polarean Inc 2500 Meridian Parkway Suite 175 Durham NC 27713 USA Version 1 2 TABLE OF CONTENTS Introduction Using This Manual sci 2 irt cte rette te erede tn Giannini 1 Chapter Guide is i at attend el Le res Ee PUE ee eee RUE de eh dca 2 Document Conventions arret e reri tae it a etr i dee TR dd dd 3 Dulce 3 ROVISIOM HISTOTY m 8 Safety and Precautions EMERGENCY SHUTDOWN INSTRUCTIONS wrcsscstiscenesiecnscotesdacuscucescsiene tutta dun ncm 1 Wamings and Precautions terrace npe re cie te t pr cce neben de acai 1 Some Common Wisdom sse tete nete tette nnne tete tenens 2 aea 4 Operational Requirements Operator Requirements rtr nderit t e cr d ee tbe e 1 Equipment Requirements sse nennen nente tenet tenni 1 Utility Requirements eesseeeee
35. acy and 15 to 250 psig operating range Shielding which protects the operator from cryogens and high pressure glassware during normal operation An oven capable of sustained air temperatures of 200 C e Atleast 2 RTDs within the oven for measurement of air temperature and cell surface temperature Performance Specifications Polarization is a function of gas flow rate Frate laser power laser light absorption gas pressure total accumulated Xe volume Vx and thawing technique The volume of the outlet manifold for handling polarized Xe is 52 cm3 The outlet manifold volume includes the cold finger and is bounded by the following valves all closed General Isolate and Flow Shut Off with Xe Outlet capped The remaining valves Xe Out and Flow Isolate are open To calculate the collection time per volume use the following formula Vxe cc Frate sccm Fractionxe 76 Taccumulation Min Example 250 cc of Xe 1000 cc min 0 01 Xe 25 min See Figure 1 for a set of representative performance curves Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 129Xe Polarization Page 3 of 6 100 ml 1 1 i 4 1 1 1 1 1 1 1 1 L 1 4 1 n 1 1 ri 1 r 0 10 15 20 Xe Production Rate ml min Figure 1 12Xe polarization vs flow rate curve Optical Polarization Cell The polarization cell is shown in Figure 2 and has the
36. all programs running on the computer Shut down the computer and slide the drawer all the way into the unit Turn off the T I Unit and the Helmholtz coil power supply Close the Cell Isolate Cell Out and Flow Isolate valves Turn off power to the unit at the power control panel switch by rotating the switch to the Off position Model 9800 Operating and Service Manual Chapter 10 Cleaning and Transporting the Polarizer Version 1 2 Page 3 of 4 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter Cleaning and Transporting the Polarizer Version 1 2 Page 4 of 4 Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 1 of 16 Maintenance Procedures The following sections describe how to complete standard maintenance procedures on a Xenon polarizer Although a trained user may conduct tasks it is recommended that a Polarean service representative perform the outlined procedures Always wear protective eyewear when performing maintenance procedures Polarean makes no guarantee of the safety or laser housing integrity of the equipment if unauthorized personnel perform LASER RADIATION AVOID EYE OR SKIN EXPOSURE TO DIRECTOR SCATTERED RADIATION these maintenance procedures CLASS IV LASER PRODUCT Upon request Polarean can loan to the customer site all extra equipment needed for perf
37. aminated clothing immediately SECTION 9 PHYSICAL AND CHEMICAL PROPERTIES APPEARANCE under argon silver metallic solid ODOR Odorless PHYSICAL STATE solid pH AS SUPPLIED Not applicable BOILING POINT F 1270 49 Model 9800 Operating and Service Manual Appendix E Rubidium MSDS Version 1 2 Page 4 of 5 C 688 MELTING POINT No data VAPOR PRESSURE mmHg No data SPECIFIC GRAVITY H20 1 1 532 SOLUBILITY Reacts violently with water MOLECULAR WEIGHT 85 47 SECTION 10 STABILITY AND REACTIVITY STABILITY Moisture sensitive pyrophoric CONDITIONS TO AVOID STABILITY Contact with water or air INCOMPATIBILITY MATERIAL TO AVOID Water alcohols oxidizers oxygen carbon dioxide halogens halocarbons acids HAZARDOUS DECOMPOSITION OR BY PRODUCTS Flammable hydrogen with moisture caustic oxide with air or moisture HAZARDOUS POLYMERIZATION Will not occur SECTION 11 TOXICOLOGICAL INFORMATION TOXICOLOGICAL INFORMATION Intraperitoneal mouse LD50 1200 mg kg SECTION 12 ECOLOGICAL INFORMATION ECOLOGICAL INFORMATION No information available SECTION 13 DISPOSAL CONSIDERATIONS WASTE DISPOSAL METHOD Dispose of according to local state and federal regulations SECTION 14 TRANSPORT INFORMATION U S DEPARTMENT OF TRANSPORTATION PROPER SHIPPING NAME Rubidium HAZARD CLASS 4 3 ID NUMBER UN 1423 PACKING GROUP I Model 9800 Operating and Service Manual Appendix E Rubidium MSDS Version 1 2
38. as Helium or Xenon and the type of system Polarizer or Polarimetry Station being used Only Xenon Polarizer and Circuit Test Low Frequency should be selectable Sample Pressure This is the pressure at which a gas sample is held Sample Blend This is the percentage of a gas sample that contains the isotope of interest for polarization A Polarean service technician sets default values upon installation Values can be edited but they should never be changed unless specifically instructed to in an SOP A Setting these values incorrectly could lead to invalid measurement of polarization Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 7 of 12 Changing Pulse Parameters Set Use the Pulse Parameters drop down list box to select what Pulse Parameter set will be in use To change this selection click the drop down control and choose the desired set from the list Changing Sample Pressure and Blend Both the Sample Pressure and Sample Blend settings each have a Use Default check box If the Use Default box is enabled has an X in it the standard value for that setting will be used If the box is cleared does not have an X then the setting may have been changed by a user Note These boxes are automatically checked whenever the program is re started or the selection of Pulse Parameters Set is changed because the standards values for t
39. ating OD gt 4 at 795 EXPOSURE TO DIRECTOR 3 nm eye protection CLASS IV LASER PRODUCT Verify that all panels and protective housing pieces are in place on the unit Set the laser power meter s wavelength detected to 795 nm and set the scale to 1 mW Turn on the laser With the infrared viewer set at the widest aperture check for areas of laser light leakage around the unit s housing sections Using the laser power meter with a bare detector head check the power of radiant light at each visible leakage point a Ensure the surface of the detector is perpendicular to the radiant light b Open all panels and doors designed to be opened during normal operation and check radiant power levels inside c Note the maximum reading from all areas checked Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 5 of 16 8 Turn off the laser and the laser power meter Record specifically the areas of leakage with radiant power above 5x104 watts If any radiant emission was above 5x10 watts contact a Polarean service representative for proper remedial measures Do not operate the polarizer until all sources of excessive emissions LASER RADIATION y wowa have been identified and repaired CLASS IV LASER PRODUCT Replacement of Protective Housing Gaskets Before performing the procedures described in this section contact a Polarean service representati
40. beam ON and OFF do nothing in reality 5 Laser output is nominally 50W CW centered on 794 6 nm wavelength The diode current may be adjusted to any percent of maximum below 100 to adjust the output power but the VHG may not hold the wavelength at 794 6 nm at diode current levels below 9075 Current for each diode cannot be set independently Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 5 of 12 The Polarimetry Application version 4 1 and above The Polarimetry application can be used to both detect the presence of polarized 129Xe in the cell and monitor the fraction of laser light being transmitted through the optical cell during gas production Keeping Transmission at prescribed levels by varying cell temperature will optimize the polarization of the gas dispensed The application contains three different views The Data Acquisition view allows the completion of all tasks during gas production such as acquiring NMR data and monitoring laser transmission see Figure 10 The Inventory view displays serial numbers of the polarimetry hardware see Figure 13 The Configuration view displays specific settings for Hardware Parameters NMR Nuclear Magnetic Resonance Circuits Pulse Parameters Alert Tolerances and Gas Sample Standards see Figure 14 The Data Acquisition view opens by default when the polarimetry application is launched Most actions take
41. ble and is less than 105 If it is greater than 105 exit and re start Polarimetry 8 Enable temperature controller output to the air heater the switch to the left of the oven temperature controller on the T I unit Verify that the cell temperature begins to rise on the oven temperature display within 2 minutes Model 9800 Operating and Service Manual Chapter 6 Operating the Polarizer Version 1 2 Page 3 of 4 Turning Off the Laser 1 2 3 Turn off the laser according to the directions included with the laser In case of an emergency turn off the illuminated toggle switch on the Spectra Physics Integra front panel or shut down the polarizer using the main emergency power switch Turn the laser control key to Off or Disable position Remove the key and store properly Leaving the Polarizer in Stand By Mode Polarean recommends the polarizer remain in stand by mode between uses 1 m B YB N Turn the heat switch on the T I unit to Off position If the laser is emitting turn it off Ensure that the cell temperature is decreasing on the T I control panel Return all valves to the pre polarization configuration as shown in Figure 5 Turn off the vacuum pump and close the Vacuum Isolate valve Shutting Down the Polarizer After putting the polarizer in stand by mode perform the following steps 1 Exit all programs running on the computer Note If using IntegraSoft software se
42. check must be performed before returning the unit to operation outside a Class 4 laser environment See the procedure for Verifying Beam Path Protective Housing Integrity Radiant Power Emission Check in Chapter 6 Interlock Troubleshooting Problem Solution Action Green light s on T I Unit are off amber warning light s on T I Unit turn on and or audible alarm is sounding Press Reset button on T I Unit Check airflow Flow rate may be too low Verify wiring harness for panel switches is plugged into the External Interlock port on the back of the T I Unit Verify the 2 pin jumper is plugged into the interlock wiring harness or that any external interlock attached is closed Verify the interlocked panels are properly affixed to the polarizer with the keys in the slots of the interlock switches Laser will not turn on Verify that the laser control software is running and the settings are correct Verify that the Emergency Off button is not pushed in on the control panel Verify that the interlock has not been tripped interlock indicators on T I Unit should be in Normal condition Verify that the power distribution box is on Verify the laser control panel s is are properly connected to the T I Unit Check the interlocks and cables Model 9800 Operating and Service Manual Appendix D Polarizer Interlocks Version 1 2 Page 4 of 4 Revision History Date Change By whom 5 1 2012 Initial re
43. e valves slowly Failure to do so may result in a glassware integrity failure A Never over tighten the Flow Control valve as it can be damaged If the optical cell explodes close the Cell Isolate and Xe mixture tank valves immediately to prevent rapid loss of Xe mixture gas Contact Polarean immediately The cryogen access door must remain closed and latched any time the cold finger is pressurized as evidenced by the digital readout below and to the left of the cryogen access door except for when thawing the frozen Xenon The Xenon polarizer is equipped with a very strong permanent magnet installed on both sides of the cold finger The cryogen access VAN door must remain closed when the polarizer is not in use Be extremely cautious when moving tools or other metal objects near the cold finger e Wear eye protection while thawing and dispensing gas and while the cryogen access door is open i Some components are very hot and are marked as such Do not touch the oven laser beam enclosure housing or any surface marked as Hot while the polarizer is on e Polarean recommends having a dry chemical powder fire suppressant in the same room as the polarizer do not use a pressurized extinguisher as this could simply spread the burning rubidium metal The rubidium metal in the optical cell will ignite explosively if exposed to water or foam Some Common Wisdom Do not close valves too tightly use two fingers to close valves
44. e open 5 Verify that the cold finger is attached and that the connections to it are finger tight 6 Open the Evacuate Outlet General Isolate and Flow Isolate valves to evacuate the cold finger 7 When the pressure in the cold finger drops below 100 mTorr close the Flow Isolate valve 8 Slowly open the Cell Out valve to allow the pressure in the cold finger to build at 1 psi per second until the pressure reading is stable 9 Slowly open the Cell Isolate valve to allow the pressure in the cell and cold finger to build at 1 psi per second until the pressure reading is stable The polarizer can now be powered up See Powering Up the Polarizer in Chapter 6 If the polarizer will not be used at this time set the polarizer to stand by mode by performing the following steps close the Cell Out valve depressurize the cold finger Chapter 8 open the Flow Isolate valve Checking the Condition of the Optical Cell This procedure involves removing a portion of the protective housing enclosing the direct laser beam path While exposure to the direct laser beam is not possible during this procedure C DANGER D Class 1 laser radiant power output specifications may be EN exceeded if the housing is not re installed correctly 3 This procedure should be performed only by a person trained to operate in a Class 4 laser environment Subsequently a radiant power output check should be performed immediately upon it
45. e power supply for the Helmholtz coils by flipping the toggle switch to On 7 Turn on the computer Turning the Laser On and Off Turning On the Laser Please be aware of the danger of exposure to hazardous LASER RADIATION AVOID EYE OR SKIN ee Te visible and invisible laser radiation CLASS IV LASER PRODUCT Only trained operators should have access to laser control keys 1 Secure curtains doors interlocks or laser attenuating partitions and illuminate any warning signs 2 Verify that all laser shielding is in place and that the cryogen access door is closed 3 Turn on the airflow to the oven to 120 160 SCFH using the airflow indicator on the front of the cartridge 4 Press Reset on the T I Unit front panel Verify that both indicator LEDs read normal green 5 Power up arm and activate the laser See Appendix A for more information on the specific laser control software Start the Polarimetry software application double click the Polarimetry icon on the desktop If the Polarimetry software was already running exit and re start the application This is necessary to ensure a correct laser light transmission baseline reading 6 Verify that the Pulse Parameters configuration is set to Xenon Polarizer If it is not correct click the text and choose the correct setting from the drop down menu 7 Verify that the Transmission reading in the bottom left corner is visi
46. e the optical cell See Chapter 11 for this procedure 2 If the polarizer will be transported by vehicle the optical cell must be removed and packaged separately Refer to steps 1 9 of Replacing the Optical Cell in Chapter 11 3 Detach the cold finger see Chapter 8 and remove it along with the dewar from the cryogenic enclosure Safely package the cold finger and dewar separately 4 Shut down the polarizer see the following section 5 Close all valves on the front and rear panels Never over tighten the Flow Control valve as it can be damaged 6 Remove the compressed air and dry nitrogen inlet lines from the unit by pulling the sleeves on the connectors back until the connectors separate 7 Detach the Xenon mixture supply and purge gas lines from the back of the cartridge by pushing the flange on the bodies of the quick connectors towards the cartridge until they click 8 Detach the electrical connection from the wall plug and store safely 9 Verify that the vacuum pump is securely affixed to the floor of the unit and the laser is properly secured on the rack 10 Remove any network or external interlock connections from the polarizer and replace all panels 11 Unlock the wheels by pulling up on the silver tabs above each until they release 12 Verify the beam path protective housing integrity see Chapter 11 before you run the polarizer again Shutting Down the Polarizer 1 2 3 4 9 Exit
47. eeenenenene netten tenente ttn nne tttt enne niti tete te trt tenta 1 REVISION FISIOLY EE 2 Polarizer Specifications PolaniZ n Brev 1 ib reprennent 1 Performance Specifications ssssssssssssseeennee tette teens 2 Polarization SU 3 Phil tL 4 Typical Settings egestate tertias itecto ene eon Peer ae ere ed EMMANUEL 5 iens M 6 Installation Plumbing and Electrical COBRIgolIDIlo uccisi empate teta inedle tetendit und set tre tenta 1 Cold Finger MIMS AM BRORL cocta beue tee urne tea anne diced ial tipa peut iurc prm threat inei 4 Optical Cell Installation sse 4 Finishing tfie Installatloln 2 acr eret rt rtr tt tertii detti rein 5 Revisi n HISTO EE 6 Operating the Polarizer Powering Up the Polarizer oit i eee eni nro e RE 1 Turning the Laser On and Off 2 Turning On the ASI qc HH 2 Turmng Oti the LaSer e 3 10 11 Leaving the Polarizer in Stand By Mode ss Shutting Down the Polarizer REVISION FISIOLY s rct rettet ret ttr tot dtes Polarizing Xenon Initializing the Xenon Collection i c rte Collecting Hyperpolarized Xenon esses Terminating the Come Chon
48. el 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 4 of 12 IntegraSoft File Communication Help Laser Status Control Emisson Mode RM Aim Beam Diode Current Continous C Pulsing aj STATUS OFF Setting zl 100 00 si Pulsetime ms n oN ar 2000 zi G ad Measured 0 27 oer er Interpulsetime ms Diode 1 Temperature C P Diode 1 BH Setting 25 00 E Diode 2 Measured 24 99 Pulse Cycles Apply Cancel 1 Repeat 4 2000 z m System Status SYSTEM OK Pause Resume Apply Cancel Figure 8 IntegraSoft main window 3 The Spectra Physics Integra laser incorporates a variable holographic grating VHG for each diode to control the output wavelength Adjusting the temperature of the diodes WILL NOT adjust the wavelength of the output The diode temperature settings should not be adjusted without first consulting with Polarean as it may adversely affect polarizer performance However real time diode temperature can be monitored by using the radio buttons under Select Diode The Apply button does not have to be clicked to switch between the diodes 4 Emission mode should always be set to Continuous yes it should be continuous but there is a typo in the software interface Even though it is present in the software interface the system does not incorporate an aiming beam so the buttons to turn the aiming
49. ell toward the back of the oven and detach the RTD from the cell surface Slide the cell out the back of the oven Be careful not to snag the arms in the RTD or NMR wiring Remove the new cell from the protective packaging and inspect for signs of visible damage or rubidium contamination as described in Checking the Condition of the Optical Cell Gently insert the new cell halfway into the oven by sliding the arms through the foam channels in the bottom of the oven Attach the RTD 1 to the front of the cell body just under the pull off stump Use strips of 1 2 mil thick 12 wide Kapton tape Gently slide the cell into the c shaped mounting fixtures Install the back end of the cell mounting fixtures using a hex wrench Tighten the screws no more than a 1 8 turn past finger tight Make a stress free connection between the Chemthread connectors on the cell arms and the inlet and outlet tubing You may have to bend the tubing slightly and or place the o ring in a different groove in the tubing to allow for variations in the glass between cells Verify that the vacuum pump is on and the Vacuum Isolate valve is open Open the Evacuate Inlet valve on the cartridge and allow the pressure to drop below 30 mTorr Close the Evacuate Inlet valve Open the Cell Isolate valve for five seconds and then close again Repeat steps 15 and 16 three more times to eliminate air trapped in the connection to the cell inlet Open the Flo
50. erify that the oven temperature is below 40 C Put on protective eyewear Open the cryogen access door Verify that the Cell Out and Flow Isolate valves on the cartridge are closed If necessary open the Flow Shut Off and Flow Control valves to depressurize the cold finger to below 15 psig Loosen the cold finger inlet and outlet compression fittings fully Detach the cold finger warming jacket Luer lock connection Rotate the cold finger away from the horizontal connection then pull down to detach the vertical connection Carefully slide the cold finger out of place while avoiding any unnecessary stress on its body against the magnet yoke Attaching the Cold Finger 1 Put on protective eyewear 2 Open the cryogen access door Model 9800 Operating and Service Manual Chapter 8 Cold Finger Operations Version 1 2 10 11 Page 2 of 2 Carefully place the cold finger in the cold finger platform while avoiding any unnecessary stress on its body against the magnet yoke Rotate the cold finger platform through the cryogen door until the o ring on the cold finger horizontal connection contacts the glass threads Put the end of the Cell Out valve tube into the top connection on the cold finger Attach cold finger warming jacket Luer lock connection Make sure the o ring for the compression fitting on the top of the cold finger is in the groove in the tubing Tighten the compression fittings to the cold finger inlet
51. essage Starting Port see Figure 7 Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 3 of 12 IntegraSoft Integra STARTING PORT Figure 7 Starting Port message in IntegraSoft window 5 Messages about communications with the laser will appear in the IntegraSoft application window and disappear automatically as the application starts 6 Once the application has completed startup and successfully communicated with the Spectra Physics laser the window will appear similar to that shown in Figure 8 Starting Laser Emission 1 To enable and start laser emission verify that there are no error messages displayed on the LCD panel on the front of the laser then click the On button in the top left corner of the IntegraSoft application window Laser emission will start after a 5 second delay and Laser Status will change from Off to EMISSION 2 The STBY button in the application will allow the laser to complete the 5 second delay prior to emission but without starting the laser emission itself Five seconds after clicking the STBY button the Laser Status will display as STANDBY From this state emission can be started immediately without any further delay by clicking the On button or can be returned to the OFF state with the Off button The Stand By state is not used in any procedures for the polarizer but is described here for completeness Mod
52. following properties The cell is made of Pyrex with O rings made of Ethylene propylene and Viton maximum pressure rating 8 atm Approximate optical cell length 13 cm Approximate optical cell diameter 5 cm Approximate optical cell volume 250 cc Rb content gt 50 mg or sufficient to cause 50 laser absorption for 6 atm gas mix pressure with a cell surface temperature at or below 200 C Rb purity 99 0 Inside the cell is an ultra pure environment sealed off from exposure to O2 H20 and other contaminants that could degrade Rb purity Visible quantity of Rb located in the Getter Bulb in inlet arm of optical cell Maximum temperature to maintain 60 absorption T lt 200 C Temperatures beyond this point will cause the Rb to ablate at an excessive rate and can deteriorate the performance of the cell Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 Page 4 of 6 Figure 2 2 Xe optical cell left and cold finger right Cold Finger The cold finger is shown in Figure 2 and has the following properties Material Pyrex Internal gas volume lt 25 cm3 Xecollection efficiency 9076 for F lt 1 7 slm The cold finger contains a gas warming jacket that prevents clogging of the inlet tube and nozzle with solid frozen Xe Capable of holding solid Xe equivalent of 1 0 L of Xe gas at STP Permanent magnet around Xe collection region provides a field B 2 2000
53. formation on these views is for viewing purposes only and cannot be changed A Polarean service representative may request this information however if the polarizer experiences technical problems Polarimetry v4 3 File Parameters Yiew Polarimetry v4 3 D5103 Figure 13 Polarimetry application Inventory view The Inventory view contains two tabs The Polarimetry Box tab displays the serial number of the polarimetry hardware The second tab depending on the system version will be either Polarizer or Polarimetry Station It displays the serial number of the respective hardware Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 10 of 12 Viewing Polarimetry Configuration The Configuration view displays information about the polarimetry application itself both the hardware and the software components The information on these views is for viewing purposes only and cannot be changed A Polarean service representative may request this information however if the polarizer experiences technical problems Polarimetry v4 3 File Parameters Yiew Polarimetry v4 3 Figure 14 Polarimetry application Configuration view The Configuration view contains the following tabs Hardware Parameters Displays the settings used to communicate with the polarimetry box NMR Circuits Displays the settings for your machine s NMR Nuclear Magnetic Resonance
54. ger support platform 4 Attach the cold finger to the cartridge according to the instructions provided in Chapter 8 Attaching the Cold Finger Optical Cell Installation See Chapter 4 for a description of the optical cell ignite spontaneously and explosively if exposed to water or air The optical cell contains up to 1 gram of rubidium metal Rubidium can 1 2 See the MSDS for rubidium Appendix E for more information Put on protective safety eyewear Remove the optical cell from the protective packaging Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 Page 5 of 6 3 Check the rubidium in the main body of the cell for signs of visible contamination Pure rubidium resembles silver Signs of contamination include e yellow or brown edges gold color aliquid state at room temperature awhite coating on the inside of the main body Note A blueor purple hue on the rubidium or cell walls is fine 4 Install the cell in the cartridge according to the instructions provided in Chapter 11 Replacing the Optical Cell beginning with step 10 Finishing the Installation Before operating the polarizer verify the beam path protective housing integrity as described in Chapter 11 Protective Housing Maintenance Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 Page 6 of 6 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc
55. he compressed air and dry nitrogen supplies and verify that you can achieve flow rates of at least 10 SCFH of dry nitrogen and 180 SCFH of compressed air on the gas flow controllers on the cartridge front panel After you have verified this shut off the gas supplies Verify that all valves on the unit in front and on the back are closed snugly except for Flow Control valve Confirm that the quick connector for the vacuum line is plugged securely into the mating connector of the Vacuum Inlet port on the back of the cartridge see Figure 3 AN Never over tighten the Flow Control valve as it can be damaged Turn on the unit by momentarily rotating the switch at the main power control panel to the Start position the switch will spring back to the On position where it should be left for normal operation If the vacuum pump does not start automatically remove the front transparent panel and turn on the pump using the power switch located on top towards the back If the unit does not power up make sure the Emergency Off button on the main power control panel is not pushed in Release the button by twisting clockwise until it pops out Open the Vacuum Isolate valve and verify that the pressure reading on the digital vacuum gauge begins to drop Make sure the Xenon mixture tank valve is fully closed Loosen the regulator connection to the mixture tank 1 turn Open the high purity purge gas supply and set it to 10 psig Adj
56. he keys in the proper slots and the jumper is attached or any attached external interlock is closed will the External Interlock circuit close and allow the laser to enable emission Removing and Replacing Interlocked Panels The interlocked panels are the cart end panel which is removed when the helium supply cylinder is replaced and the oven cover panel which is removed to check or replace the optical cell Cart End Panels To remove the cart side panel 1 Hold the panel in position while the screws securing it are removed 2 Pull the panel straight off the end without bending or twisting To replace the cart end panel 1 Hold the panel so that the key is at the bottom and facing the polarizer 2 Line the key up with the slot in the switch and push the panel straight on A distinct click will be heard as the switch is engaged 3 Hold the panel in place until all of the screws securing it have been tightened Oven Covers To remove the oven cover panel 1 Remove the retaining screws 2 Lift the cover straight up until the key has disengaged from the switch To replace the oven cover 1 Line the key up with the slot in the switch and push the cover down until the key is fully inserted 2 Replace the retaining screws and tighten Model 9800 Operating and Service Manual Version 1 2 Appendix D Polarizer Interlocks Page 3 of 4 When either of the interlocked panels is removed a radiant laser emissions
57. he polarizer e A Xe polarization cartridge that fits securely in the left compartment of polarizer cart assembly A polarizer cart assembly housing the 2 Xe polarization cartridge and other components as follows Line narrowed laser and optical conditioning box Temperature and interlock T T controller Polarimeter and light transmission monitor Helmholtz coils and variable power supply Vacuum pump Computer Power distribution Cartridge Components The following list describes the components that compose the 2 Xe polarizer cartridge e Plumbing within the cartridge that is leak tested to 5x10 standard cc s of He per second and is clean to O service grade or better Model 9800 Operating and Service Manual Chapter 4 Polarizer Specifications Version 1 2 Page 2 of 6 e A heat activated gas purifier in the gas flow path that removes trace H20 O CO and CO The purifier is able to accommodate a total gas flow rate of 5 L min e Components for handling polarized 19Xe composed of non ferrous materials that are largely free of paramagnetic contaminants Examples of materials used include Pyrex Aluminum non anodized PTFE PFA silver plated materials gasket materials and other high purity non paramagnetic coatings Xenon outlet port connection accepts 1 4 OD tubing user supplied e Mass flow meter with 5 accuracy and 0 4 L min operating range e Pressure transducer with 5 accur
58. hese settings are re loaded at such times To change the value of either setting complete the following steps 1 Click on the Use Default check box to clear it 2 Click in the number box and type a new value for the associated setting Performing Data Acquisitions The polarimetry window allows to measure the polarization level in the gas This is accomplished by clicking the Acquire Data button in the polarimetry window After clicking Acquire Data the Polarization 76 field displays the level of polarization of the gas at that exact moment Also fields on the FID Analysis tab are updated with additional information about the acquired signal Notifying the Operator of Uncertainty in Calculated Values If the calculated value for T is less than 4 ms or if the calculated value for SNR is less than 2 the background color behind the display of the value as well as the background behind the Polarization will change to orange This is intended to let the user know that there is less than an 8576 certainty in the values being displayed Increasing Signal to Noise for Low Amplitude Signals For measuring signals with a low amplitude compared to the background electromagnetic noise there are some processing algorithms that can be used to help increase the signal visibility averaging of multiple signal acquisitions and line broadening of the individual measurements These algorithms can be used either independently
59. late valve Steps 5 8 must be performed with precise timing The procedure A and all steps must be read understood and practiced completely before attempting to perform them Failure to perform these steps with precise timing could result in operator injury and polarizer damage and at the very least low polarization g over pressurization of the system and possible explosion causing Verify once again that the Flow Isolate valve is closed Support the dewar and slide its support shelf out from under it Lower the liquid nitrogen dewar and set it aside Place left hand on the Flow Isolate valve while holding the thawing vessel containing room temperature water in the right hand Now complete the following steps a Lift the thawing vessel containing room temperature water around the cold finger as far as it will go b Swish the thawing vessel side to side for better heat transfer c Monitor the pressure continuously until it reaches 45 psig this will occur approximately 6 10 seconds after immersion in water d Quickly open the Flow Isolate valve until the pressure falls and then close it immediately Repeat steps b c as the Xenon continues to thaw By keeping the cold finger pressure in the range of 40 60 psig during the thaw frozen Xenon will spend less time as a warm solid and polarization Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 7 of 10 is better preserved It is impor
60. le at a later date 3 Examine the polarizer for visible signs of damage during shipment and verify that all items on the packing list arrived intact Plumbing and Electrical Connections 1 Position the polarizer in its chosen operating location and lock the wheels by pushing down the silver tabs 2 Securely mount the Xenon mixture tank in a tank mount close to the polarizer and the UHP purge gas source 3 Remove the front and rear panels of the polarizer Make sure the vacuum pump and laser are still properly secured 4 Verify that all AC components are properly connected to the central grounding bar with grounding straps 5 Check the vacuum pump oil level see Chapter 11 Replace the polarizer front and rear panels Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 Page 2 of 6 6 Connect the main power cable from the unit to the 208 VAC three phase local supply with isolation device and supply power 7 Connect the fitting on the regulator manifold to the Xenon mixture tank Hand tighten the nut Vacuum Isolate NMROIQ IFN nee E Xe 9600 BACK PANEL Purge In Evacuate Supply Purge Check P Regulator Valve To Cell Ueber Cable Regulator N2 Gas Commercial Heater Pwr Purifier Pwr 4 A g i Compressed Air Source To Front Panel Pua Figure 3 Xenon polarizer rear panel 8 Connect the UHP purge gas at 10
61. lease Polarean Inc Model 9800 Operating and Service Manual Appendix E Rubidium MSDS Version 1 2 Page 1 of 5 Rubidium MSDS SECTION 1 PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME RUBIDIUM 99 9 prescored ampoule SYNONYM Alkali metal PRODUCT CODES Rb MANUFACTURER ATLANTIC METALS amp ALLOYS ADDRESS P O BOX 589 STRATFORD CT 06615 EMERGENCY PHONE 203 378 9025 CHEMTREC PHONE 800 424 9300 FAX PHONE 203 378 9570 CHEMICAL NAME Rubidium CHEMICAL FAMILY Metal or element CHEMICAL FORMULA Rb SECTION 2 COMPOSITION INFORMATION ON INGREDIENTS CAS NO 7440 17 7 SECTION 3 HAZARDS IDENTIFICATION EMERGENCY OVERVIEW The metal rapidly forms caustic and highly corrosive alkali hydroxide with evolution of heat Severe thermal and chemical burns will result at every point of human contact ROUTES OF ENTRY Skin and eye contact ingestion POTENTIAL HEALTH EFFECTS EYES Severe thermal burns corrosion and ulceration of the eyes may occur on direct contact Model 9800 Operating and Service Manual Appendix E Rubidium MSDS Version 1 2 Page 2 of 5 SKIN Severe thermal burns corrosion and ulceration of the skin may occur on direct contact INGESTION Will cause burns and perforations of the gastrointestinal tract INHALATION Not a likely mode of entry ACUTE HEALTH HAZARDS With moisture or human contact metal rapidly forms caustic and highly corrosive alkali hydroxide with evolution of heat
62. lect Close Port from the drop down menu before closing the application Shut down the computer via the start menu Once the computer is powered off close the lid and slide the drawer all the way into the unit If the polarizer is not going to be operated for an extended period of time e g several weeks close the glass inlet and outlet valves of the cell see procedures in Chapter 11 Turn off the T I Unit and the Helmholtz coil power supply Close the Cell Isolate Cell Out and Flow Isolate valves Turn off power to the unit at the power control panel switch by rotating the switch to the Off position Model 9800 Operating and Service Manual Chapter 6 Operating the Polarizer Version 1 2 Page 4 of 4 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 1 of 10 Polarizing Xenon There are four steps to polarizing Xenon Prepare the polarizer e Activate the laser while flowing xenon Collect the polarized Xenon e Thaw the collected Xenon Note For some of these procedures tasks are performed in software applications For more information on software applications see Appendix A Initializing the Xenon Collection 1 Verify the Helmholtz coil power supply is on 2 Check that all valves are in the proper initial configuration See Figure 4 Note A complete plumbing layout appea
63. m at least every 10 minutes during accumulation and adjust the Flow Control valve and oven controller temperature to maintain the desired flow rate and laser transmission just below the appropriate threshold Fill the thawing vessel 4 full with room temperature water vessel will be needed when the collected Xenon is thawed Attach a collection container e g an inflatable plastic bag to the Xe outlet Evacuate the container by opening the Evacuate Outlet General Isolate and Xe Out valves and letting the vacuum reach 100 mTorr or below Purge the collection container with purge gas by closing the Evacuate Outlet valve then opening the Purge Outlet valve until the bag is full if the collection container is flexible or until the pressure reading is 1 psig in a rigid container AN The pressure of the purge gas is sufficient to burst a bag if overfilled Use caution when filling bags Repeat this step several times throughout the accumulation to prepare the collection container for dispensing Terminating the Collection Once the appropriate time has elapsed for collection of the desired volume of Xenon according to the formula in the section above 1 2 Increase the flow to the cold finger warming jacket to slightly above 10 SCFH Close the Cell Out valve to stop flow out of the cell Pressure in the outlet manifold will begin to drop After pressure drops down to 5 10 psig close the Flow Shut off valve Evacuate the
64. m may remain pressurized When the UHP nitrogen cylinder is changed the connecting hose will be exposed to air Always try to limit the amount of time the UHP nitrogen hose is exposed to air during the tank replacement process no more than 1 2 min Put on protective safety eyewear Close the Cell Isolate valve This will protect the polarizer and optical cell from air contamination Close both Xenon and UHP N Regulator Isolate valves to maintain pressure in the system Open and close the valve on Xenon mixture tank to pressurize the Xenon line This will prevent N flow into the Xenon circuit up to the check valve near the UHP N2 regulator and will protect the Xenon side of the circuit from air contamination Close the valve on the old UHP nitrogen tank Close the UHP N Shutoff valve Disconnect the hose from the UHP nitrogen tank Remove the old tank and replace it with the new UHP nitrogen tank Attach the UHP nitrogen hose to the new tank tighten the connection using a wrench and open the valve on UHP nitrogen tank Open the UHP N HP Vent valve very slowly until purge gas starts flowing through the orifice Let the purge gas bleed through the orifice for at least 30 seconds This is desired because it purges most of the air contamination out of the connecting hose An NEVER open the UHP N HP Vent valve all the way Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 11
65. nd Service Manual Appendix A Using the Computer Applications Version 1 2 Page 12 of 12 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Version 1 2 Troubleshooting Problem Appendix B Troubleshooting Page 1 of 4 Solution Action Green light s on T I Unit are off amber warning light s on T I Unit turn on and or audible alarm is sounding Check interlocks and cables Check airflow Flow rate may be too low Laser will not turn on Verify that the laser interface software is running and the settings are correct Verify that the front panel key switches are in the On or Enable positions Verify that the Emergency Off button on the laser panel is not depressed if applicable Check for error messages on the LCD screen of the laser front panel if applicable Verify that the interlock has not been tripped Verify that the power distribution box is on Check the interlocks and cables Oven temperature is not going up Verify the compressed air and heater are on and that the temperature controller is set for a higher temperature than the present temperature Check to see if the interlock has been tripped If the air interlock has been tripped raise compressed air flow rate above 130 SCFH and then lower to desired flow rate again Then press the Reset button on the temperature interlock unit
66. ng Cell Temperature You can increase cell temperature by the forced air heater only when the air interlock is in the Normal not Fault state 1 Turn the Heat switch to the On position 2 To change the cell temperature adjust the set point using the up and down arrows on the front of the temperature controller Refer to the temperature controller manual for instructions on additional features such as auto tuning and changing the input control type Connecting an External Interlock Optional There is a port on the back of the T I Unit where you may connect an external interlock or warning sign If no external interlock is used the port should be shorted with the supplied jumper The port accepts a DB 9 connector and supplies an open circuit potential difference of 5VDC between pins 1 and 6 in the connector While pins 1 and 6 in the connector are shorted together the External Interlock can be reset to the normal condition using the Reset button The External Interlock will revert to the fault condition if the connection is opened or if power to the T I Unit is lost A Never connect a jumper to the Air Interlock port on the back of the T I Unit Cell explosion forced air heater destruction fire or severe damage to the polarizer could result Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Model 9800 Operating and Service Manual Chapter 10 Cleaning and Transporting the Polarizer Ve
67. o ring is between the filter flange and the vacuum hose flange Hand tighten the QF16 flange clamp over the connection Power up the polarizer and the vacuum pump Open the Vacuum Isolate valve and let the vacuum gauge reading stabilize Note If after 30 minutes the stabilized reading is gt 100 mTorr contact a Polarean service representative Replace the vacuum pump access panel Optical Cell Maintenance Depressurizing the Optical Cell 1 2 3 9 N 9o wv A Put on protective safety eyewear Verify the Cell Out valve is closed Open the Flow Isolate General Isolate and Evacuate Outlet valves to evacuate the cold finger Allow the pressure in the cold finger to drop below 100 mTorr Close the Flow Isolate valve Close the Cell Isolate valve Slowly open the Cell Out valve and allow the pressure reading to stabilize Open the Flow Shut Off and Flow Control valves until pressure in outlet manifold reaches 15 psig Close the Flow Shut Off and Cell Out valves Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 8 of 16 Pressurizing the Optical Cell 1 Ensure the oven access cover is installed and secured with screws and the cryogenic access door is closed 2 Ensure the Cell Out and Cell Isolate valves are closed 3 Set the outlet pressure on the Xenon mixture regulator to 75 psig 4 Verify the Xenon mixture tank valve and the Regulator Isolate and To Cell valves ar
68. ocedures for installing the polarizer the cold finger and the optic cell e Chapter 6 Operating the Polarizer lists instructions for powering up the polarizer and turning the laser on and off Chapter 7 Polarizing Xenon walks through the polarization process from start to finish e Chapter 8 Cold Finger Operations documents how to attach and detach the cold finger e Chapter 9 The Temperature Interlock Unit explains how to control the cell temperature Chapter 10 Cleaning and Transporting provides instructions for how to move the polarizer if necessary Chapter 11 Maintenance Procedures explains the periodic procedures needed to maintain the polarizer Appendix A Using the Computer Applications describes how to use the software applications that accompany the polarizer Appendix B Troubleshooting provides solutions to common problems e Appendix C Accumulation Data Sheets for recording accumulation statistics Model 9800 Operating and Service Manual Chapter 1 Introduction Version 1 2 Page 3 of 8 Appendix D Polarizer Interlocks explains how the polarizer interlocks function Appendix E Rubidium MSDS describes general properties of Rb alkali metal Document Conventions Emphasized text appears in italics For example Hand tighten the OF16 flange clamp over the connection e Do not operate the polarizer until all sources of excessive emissions have been repaired
69. old finger with distilled water This procedure should be performed after every 20 accumulations of Xenon in the cold finger or more often if desired Rinsing the Cold Finger 1 Remove the cold finger using the instructions in Chapter 8 Cold Finger Operations While holding the cold finger upright over a sink or other waste container fill the cold finger with distilled water Invert and or tilt the cold finger to allow the water to drain out Repeat steps 2 and 3 Try to get as much water as possible out of the interior chambers of the cold finger You can dry the cold finger by attaching it to a supply of dry pressurized gas such as Helium or Nitrogen until moisture is removed If there is a white film remaining on the inside walls of the cold finger it is either contamination from another substance or a slight etching of the glass surface resulting from contact with rubidium This does not affect the performance of the cold finger or the level of Xenon polarization Contact a Polarean service representative to obtain a replacement cold finger if desired for aesthetic reasons Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 15 of 16 7 Install the cold finger using the instructions in Chapter 8 Cold Finger Operations Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 16 of 16 Revision History Date Change By whom 5 1 2012
70. orming these procedures including the infrared viewer and the laser power meter Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 2 of 16 Maintenance Schedule Table 3 Maintenance Schedule Maintenance Item Interval Rationale Procedure Verify that all protective Before each run Safety Page 4 housing is in place Verify beam path Quarterly or after Safety Page 4 protective housing each service event integrity Change o ring gaskets Annually Safety Page 5 in protective housing Check oil Weekly Life Page 6 level condition in Performance vacuum pump Change oil in vacuum Semi Annually Life Page 6 pump Performance Check optical cell Monthly Performance Page 10 condition Re activate gas purifier At every tank Performance Page 13 change Life Clean cold finger After 20 Performance Page 14 accumulations or as needed Perform calibration on Annually according Performance Contact the following to accepted Safety Polarean components calibration standards e Outlet Pressure Transducer Mass Flowmeter Plumbing Layout The complete Xenon polarizer plumbing diagram is shown in Figure 5 This diagram should be consulted when performing maintenance tasks yno e Burquinjd sezisejod uouey g ainbi4 e 9800 BACK PANEL UPDATED Xe 9800 2 E 3 a E 3 gt a Xe 9800 FRONT PANEL Means that the valve is closed in the pre polariza
71. placing the Optical Cell This procedure involves removing a portion of the protective housing enclosing the direct laser beam path While exposure to the direct laser beam is not possible during this procedure Class 1 laser radiant power output specifications may be exceeded if the housing is not re installed correctly SCATTERED RADIATION C DANGER D This procedure should be performed only by a person trained ww to operate in a Class 4 laser environment Subsequently a radiant power output check should be performed immediately upon its completion CLASS IV LASER PRODUCT After reading the instructions provided in this section please refer to the video clip enclosed with this operating manual for a demonstration of the steps involved in changing an optical cell Seal off gas flow to and from the cell by closing the Cell Isolate and Cell Out valves Put on eye protection Remove the oven lid Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 10 11 12 13 14 15 16 17 18 19 20 Page 10 of 16 Support the valve bodies to keep them from twisting and then close the glass valve on each of the cell arms until the o rings contact the glass While supporting the cell valves loosen the Chemthread connections to each of the cell arms Remove the back end of each of the c shaped cell mounting fixtures inside the oven Gently pull the c
72. psig to the regulator manifold at the purge gas inlet The inlet is located at other end of the check valve on the tee between the tank connection and the regulator body Use 1 4 OD OFHC copper tubing cleaned for O2 service for the connection if possible Bend and cut the tubing as needed for the purge gas line to meet all local safety requirements Tighten the compression fitting on the check valve 1 turns past finger tight Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 10 11 12 13 14 15 16 17 Page 3 of 6 Using 1 4 OD OFHC copper tubing cleaned for O2 service connect the high purity purge gas to the female quick connector on the Purge In port on the back of the cartridge see Figure 3 Tighten the compression fittings on the quick connector body 174 turns past finger tight Using 1 4 OD OFHC copper tubing cleaned for O2 service connect the outlet of the regulator manifold to the female quick connector on the Supply In port on the back of the cartridge see Figure 3 Tighten the compression fittings on the quick connector body and the regulator manifold outlet 174 turns past finger tight Connect the low pressure dry nitrogen and compressed air 20 psig lines to the female connectors on the corresponding inlets on the back of the cartridge Use 1 4 ID tubing rated for at least 50 psig continuous service for the compressed air and nitrogen Activate t
73. removed could cause severe and permanent damage to eyes and or exposed skin Never attempt to activate laser emission with any of the panels removed or improperly secured been fitted with tamper resistant screws Under no circumstances should anyone but authorized Polarean service personnel attempt to remove the tamper resistant screws and or defeat the interlock switches Panels designed to be removed only during service operations have If laser emission is activated with any of the protective housing panels removed or interlocks defeated the polarizer becomes a Class 4 laser product and must be operated in an environment approved for Class 4 lasers If any of the protective housing components are removed during maintenance or service a re verification test that radiant laser emissions are within Class 1 limits must be performed prior to operating the polarizer in a Class 1 environment Model 9800 Operating and Service Manual Appendix D Polarizer Interlocks Version 1 2 Page 2 of 4 The interlock switches are wired in series and connected to the External Interlock port of the Temperature Interlock chassis box A 2 pin connector is provided in the switch wiring harness to connect the polarizer to an external interlock system The connector is wired in series with the switches and is supplied with a jumper for use without an external interlock system Only when both on board switches are closed by placing the panels on the polarizer with t
74. residual gas pressure in the outlet manifold by opening the Evacuate Outlet General Isolate and Flow Isolate valves When pressure reaches approximately 14 psig close the Flow Isolate valve It is not necessary to pull a complete vacuum Turn off the laser Turn off the Heat switch on the T I unit Note If accumulating an additional batch the laser and heat should be left On otherwise follow Resetting the Polarizer procedures Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 6 of 10 Thawing Frozen Xenon 9 N A YI Sublimation of any accumulated solid Xenon occurs rapidly once the cold finger is removed from the liquid nitrogen As the Xenon is returned to the gaseous state the pressure will build rapidly in the A cold finger Pressure should be monitored carefully during the entire thawing process and valves opened at specific points specified in the procedure This is why it is greatly encouraged for all operators to memorize and practice the thawing procedure prior to performing it with accumulated Xenon in the cold finger Wearing eye protection is recommended during the thawing process Verify that the Flow Isolate valve is closed Evacuate the container by opening the Evacuate Outlet General Isolate and Xe Out valves and letting the vacuum reach 100 mTorr or below Close the Evacuate Outlet valve after the vacuum has fallen below 100 mTorr Close the General Iso
75. ressurizing the Optical Cell sss Checking the Condition of the Optical Cell Replacing the Optical Cell sse Gas Manifold Maintenance sss Version 1 2 12 A 13 B 14 C 15 D 16 E Version 1 2 Replacing the Xenon Mixture Tank seen 11 Replacing the UHP Nitrogen Tank sene nennen 12 Regenerating the Gas PUMA mete epa traiteur testante b Res tR p co cte anes 13 Cleaning the Cold Finger etr OT 14 Rinsing the Cold PUMQ TT 14 Revision HISTO E ian 16 APPENDICES Using the Computer Applications The Laser Control Application IntegraSoft for Systems with Spectra Physics Lasers 1 Starting the Interface accetto tet toa Peer a re o aree cud 2 Starting Laser Emission sse tenente nens 3 The Polarimetry Application version 4 1 and above eeeennnes 5 Navigating the Data Acquisition View sseeennnennnnnn nnne 5 Gas Sample Settings Pressure Blend and Pulse Parameters sssssssss 6 Performing Data Acquisitions E 7 Notifying the Operator of Uncertainty in Calculated Values sse 7 Increasing Signal to Noise for Low Amplitude Signals see 7 Recording the Baseline Transmission
76. rs in Chapter 11 3 Ifthe optical cell glass inlet and outlet valves on the optical cell were closed due to extended shutdown since the last time the polarizer was run open both valves by following the instructions provided in Chapter 11 Pressurizing the Optical Cell Model 9800 Operating and Service Manual Version 1 2 Chapter 7 Polarizing Xenon Page 2 of 10 LAYOUT PLUMBING Xe 9800 UPDATED Figure 4 Xenon 9800 polarizer front panel 4 Turn on the vacuum pump open the Vacuum Isolate valve if not already open and verify that the outlet manifold pressure is 100 mTorr or less on the vacuum gauge Evacuate the outlet manifold up to Cell Out valve by opening the Evacuate Outlet valve until the pressure is 100 mTorr or less Close the Evacuate Outlet valve and then open the Purge Outlet valve for approximately 2 seconds and close it Open the Evacuate Outlet valve and wait for the pressure to fall below 100 mTorr With the Purge Outlet valve closed Evacuate Outlet valve open and pressure below 100 mTorr close the Vacuum Isolate valve and ensure that the pressure does not rise more than 1 2 mTorr per second If it does open the Vacuum Isolate valve and repeat steps 6 and 7 until the system is thoroughly evacuated of impurities before proceeding Open the Vacuum Isolate valve close the Evacuate Outlet valve and then open the Purge Outlet valve for approximately 2 seconds and close it Model 9800 Operating and
77. rsion 1 2 Page 1 of 4 Cleaning and Transporting the Polarizer Cleaning the Polarizer During normal operation the polarizer does not require any routine cleaning The surface panels can be cleaned with a soft cloth moistened only with water if they become dirty Never use any solvents or non aqueous solutions on the polarizer as the paint and printed lettering can be damaged Do not spray any AN liquids directly on the polarizer Do not clean the front of the rack mount components Water penetrating through the panel cutouts can damage the components Moving the Polarizer It is safe to roll the polarizer across a smooth interior floor surface For transport outside or with a vehicle a cushioned skid or pallet must be provided The procedure for loading onto the skid or pallet will vary and the skid or pallet manufacturer should be consulted Whenever the polarizer is transported by vehicle a 5 G shock indicator should be affixed to the packaging to indicate rough handling The polarizer should never be moved while the optical cell and or cold finger are pressurized above 14 psig The glassware could AN explode resulting in serious injury and damage to the unit Make sure all gas and electrical lines have been disconnected from the unit before moving Model 9800 Operating and Service Manual Chapter 10 Cleaning and Transporting the Polarizer Version 1 2 Page 2 of 4 Preparing the Polarizer for Moving 1 Depressuriz
78. s completion 1 Make sure the polarizer has not been running for at least 30 minutes The oven should be cool to the touch for this procedure 2 Puton protective eyewear Model 9800 Operating and Service Manual Version 1 2 10 11 12 Chapter 11 Maintenance Procedures Page 9 of 16 Turn off the laser power and remove the key Depressurize the optical cell as described in Depressurizing the Optical Cell Remove the eight screws holding the top of the oven in place four on top four on the back Gently remove the oven top by lifting it up and back Check the appearance of the rubidium in the cell If the rubidium is gold colored or if it has yellow or black edges consider replacing the cell see the following section for this procedure or consult with a Polarean service representative Also consider replacing the cell if the interior is significantly coated with a white film Verify that RTD 1 is firmly affixed to the cell between the cell arms Make sure the other RTD s in the oven are not crossing the laser beam path Replace the oven top and tighten the eight screws holding it in place Verify that the radiant laser power emission levels around the oven top are within Class 1 laser product limits as described in Verifying Beam Path Protective Housing Integrity Re pressurize the optical cell before operating the polarizer as described in Pressurizing the Optical Cell Re
79. ss the Off button on the UPS front panel Warnings and Precautions The Xenon Polarizer contains an enclosed Class 4 laser system LASER RADIATION AOD KI The removal of any portion of the Polarizer is prohibited during normal operation Visible and or invisible laser radiation wwa exposure can occur when the protective housing is removed SNAN Avoid eye and or skin exposure to direct or scattered radiation Keep all laser shielding apparatus and housing in place when operating the system Operators should never attempt to remove any portion of the polarizer affixed with tamper resistant safety screws If a fault is suspected in a component located behind any cover affixed with tamper resistant screws please contact Polarean Model 9800 Operating and Service Manual Chapter 2 Safety and Precautions Version 1 2 Page 2 of 4 All operators of the polarizer must have been trained by Polarean in proper usage and safety precautions e Only a trained operator must perform any service or installation of the Xenon Polarizer The Xenon Polarizer contains glass vessels under high pressures routinely up to 75 psig but can be higher in case of misuse or gas regulator failure Protective eyewear should be worn any time a panel is removed from the unit The optical cell and cold finger are glass and cannot withstand rapid or extreme pressure changes When pressurizing either the cell or cold finger open th
80. tant to keep pressure high but not to let pressure rise substantially above 60 psig e When the pressure stops increasing fully open the Flow Isolate valve to extract any remaining Xenon in the cold finger f Close the valve to the collection container or close the pinch clamp on the bag tubing 9 Close the Xe Out valve detach the collection container and place it on the Polarization Measurement Station before taking it to the application site 10 Turn off the flow to the cold finger warming jacket 11 Open the General Isolate valve for the next use Model 9800 Operating and Service Manual Chapter 7 Polarizing Xenon Version 1 2 Page 8 of 10 Preparing a Consecutive Batch Note The following steps are only for producing an additional batch of Xenon Otherwise proceed to Resetting the Polarizer It is not necessary to start from the cold state for an additional batch once the polarizer is warmed up 1 At the end of an accumulation ensure that a The laser is left on b The oven temperature control is left on c Air flow to the oven is left on d Air flow to the cold finger warming jacket is returned to 4 SCFH e The Flow Isolate valve is closed f The liquid nitrogen dewar is empty 2 Open the Cell Out valve very slowly so that the pressure only rises 1 psig per second It is important that a rush of gas does not leave the cell while it is hot or Rb may move within the cell 3 Open the Flow Shut Off valve
81. tial or the degree of broadening Larger values for the exponential give more line broadening The effect can be seen in both the time and frequency domain graphs see Figure 12 for an example To turn on line broadening click the switch marked Broadening see Figure 11 in the bottom middle portion of the Polarimetry software window the indicator on the switch should turn bright green and input the degree of line broadening desired in the A field 0 01 is a good starting value Figure 11 Broadening control interface Model 9800 Operating and Service Manual Appendix A Using the Computer Applications Version 1 2 Page 9 of 12 Figure 12 Polarized gas signals without left and with right broadening applied Recording the Baseline Transmission A baseline reading of the photodiode voltage is taken whenever Polarimetry is launched This value is used as the reference point for 100 transmission Therefore for accurate measurements of laser power transmitted through the cell the Polarimetry application should only be stared with the cell temperature below 50 C If IntegraSoft is being used for laser control the Polarimetry application should be launched only after laser emission has started and before the cell reaches a temperature of 50 C Viewing Polarimetry Inventory Information The Inventory view displays information about the polarimetry application itself both the hardware and the software components The in
82. tion configuration See page 4 1 t 9 Jo abe Z UOISJ9 senpeooJg eoueuejure N Jeydeu jenueyy eoueg pue Buneiedo 0096 IPPON Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 Page 4 of 16 Protective Housing Maintenance a DANGER gt If a calibrated laser power meter is not available for a Radiant Power Emissions Test the polarizer must be considered a Class 4 LASER RADIATION AVOID EYE OR SKIN Yama laser Consequently eye protection must be worn at all times wswwsmwa Until a laser power measurement is performed Checking for the Presence and Integrity of Protective Housing It is recommended that this test be performed every day before operating the polarizer 1 2 Verify that all pieces of the protective housing shown in the plumbing layout of Figure 5 are in place including screws and gaskets If any piece of housing is visibly damaged or its integrity is in question contact a Polarean service representative Verifying Beam Path Protective Housing Integrity 1 Move the product into a room suitable for the use of Class 4 laser products and turn off all other sources of laser energy in the room Make all necessary electrical air and external interlock connections to the unit Clear room of all unnecessary personnel Ensure that everyone remaining in the room is trained in sawas laser safety and is wearing laser attenu
83. to prevent damage to the seals When checking to see if a valve is open or closed always try to close it This will eliminate any accidental openings Model 9800 Operating and Service Manual Chapter 2 Safety and Precautions Version 1 2 Page 3 of 4 e Always wear eye protection when you are working with any part of the cell or cryogenic collection assemblies Eye protection is provided by Polarean e Never disable or remove any of the safety or laser intensity reduction mechanisms laser safety windows laser interlock shielding apparatus Permanent severe injury may result e Verify that all safety mechanisms and shielding components are in place and working before you turn the laser on e Each internal component is connected to a central grounding bar via a grounding strap Disconnect the grounding strap from the bar before removing any component Model 9800 Operating and Service Manual Chapter 2 Safety and Precautions Version 1 2 Page 4 of 4 Revision History Date Change By whom 5 1 2012 Initial release Polarean Inc Chapter 3 Operational Requirements Model 9800 Operating and Service Manual Page 1 of 2 Version 1 2 Operational Requirements Operator Requirements All operators must have read this guide before operating the polarizer or any of its components The polarizer contains glassware under pressure All glassware should be depressurized before moving or performing any maintenance on
84. ust the Purge Gas Shut Off valve or the main UHP purge gas supply valve until the purge gas can barely be heard and felt flowing from the connection to the Xenon mixture tank Model 9800 Operating and Service Manual Chapter 5 Installation Version 1 2 18 19 20 21 22 23 24 Page 4 of 6 Allow the purge gas to flow through the tank connection for one minute and then fully tighten the connection to the Xenon mixture tank Close the Purge Gas Shut Off valve on the regulator manifold or the main UHP purge gas supply valve and open the Evacuate Supply valve on the back of the cartridge Wait for the pressure to drop below 100 mTorr on the vacuum gauge Close the Evacuate Supply valve and open the Purge Gas Shut Off valve or the main UHP purge gas supply valve Leave it open for at least 10 seconds Repeat steps 19 and 20 two more times Open the To Cell valve on the back of the cartridge If the polarizer is shipped with a removable hard drive install the enclosure in the computer and lock it in place with the supplied key The hard drive will not receive power unless it is locked in place Turn on the UPS if applicable computer and monitor Cold Finger Installation See Chapter 4 for a description of the cold finger 1 Unpack the cold finger and make sure it is intact 2 Verify that the small tubing for the warming jacket goes to the bottom of the nozzle 3 Place the cold finger in the cold fin
85. ve to check whether any gaskets are installed on your polarizer s protective housing This procedure involves removing a portion of the protective housing which encloses the direct laser beam path While C DANGER D exposure to the direct laser beam is not possible during this temas procedure Class 1 laser radiant power output specifications may be exceeded if the housing is not re installed correctly CLASS IV LASER PRODUCT Although a trained user may conduct these tasks it is recommended that a Polarean service representative perform the outlined procedures Subsequently a radiant power output check should be performed immediately upon its completion 1 Ensure the polarizer has not been running for at least 30 minutes The oven outer surface should be cool to the touch and the oven temperature measurement below 35 C for this procedure 2 Put on laser protective eyewear with OD gt 4 at 795 nm 3 Turn alllaser power off and remove the key s from the control panel s 4 Remove the four screws on each side that hold the laser tube and backstop to the sides of the oven 5 Slide the laser tube and backstop away from the oven 6 Remove the old o ring gasket 7 Insert the four screws holding the laser beam enclosure tube to the oven into the holes in the laser tube 8 Stretch the new 1 8 o ring over the shafts of all four screws 9 Push the laser tube and backstop back up to the oven and
86. w Isolate General Isolate Evacuate Outlet and Cell Out valves When the pressure drops below 30 mTorr close the Evacuate Outlet valve Open the Purge Outlet valve for 2 seconds Repeat steps 18 19 three more times to eliminate air trapped in the connection to the cell outlet Model 9800 Operating and Service Manual Chapter 11 Maintenance Procedures Version 1 2 21 22 23 24 25 Page 11 of 16 Open the Evacuate Outlet valve When the pressure drops below 30 mTorr close the Flow Isolate valve While supporting the valve bodies to keep them from twisting open both glass valves on the new cell arms The digital pressure gauge should be reading a slight purge gas pressure at this point Replace the oven top and secure with the eight screws Verify that the radiant laser power emission levels around the oven are within Class 1 laser product limits as described in Verifying Beam Path Protective Housing Integrity Re pressurize the optical cell before running as described in Pressurizing the Optical Cell and close the Cell Out valve Gas Manifold Maintenance Replacing the Xenon Mixture Tank 1 2 3 10 11 12 13 Put on protective safety eyewear Close the valve on the Xenon mixture supply tank Close both Xenon and UHP N Regulator Isolate valves to maintain pressure in the system Verify that the UHP N Shutoff valve is open and the UHP nitrogen regulator output is set to

Xenon Hyperpolarizer, Model 9800

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