User manual - Applied Photonics Ltd
Contents
1. SC 2L modular sample chamber Image showing LIBSCAN 100 with SC 2L sample chamber The ICE 450 laser power supply is on the right 3 2 LIBSCAN 100 console Inert gas inlet port for Spectrometer trigger input gas purge of sample Interlock Interlock Override External warning connects to Q Switch Out requires 4 mm OD Override warning indicator light Output 12 BNC port on laser power supply plastic tubing Keyswitch LED VDC centre pin ve Video Out phono connector amp oS y SS CLASS 4 INTLK WARNING oS riage note WARNING LIGHT ee Interlock IN OUT Power On connects to Interlock indicator light IN OUT on front of the ICE 450 laser ower supply See 12 Volt DC a 4 a power input SS an lt 2 5 Amp Une aaa Se See ie INTLK INTLK DOOR I x For connection to eA o a E A Sue AAN EE OVERRIDE IN INTLK J laboratory door Auxiliary 12 AOE eee ee ete switch if required power output USB 2 0 connection for external computer Main fuse 3 Amp Close up view of the LIBSCAN 100 console front panel 1998 2015 Applied Photonics Ltd Page 7 of 28 The LIBSCAN 100 console contains the optical spectrometers up to six or eight spectrometers may be installed depending on the model of LIBSCAN system and electrical circuits for the laser safety interlock The console requires a 12 Volt DC electrical supply 2 5 Amps max which is derived from the mains electrical supply using the low voltage2. l J adjustment knob Feet suitable for or imperial optical table Fume extraction port for optional connection to an external air extraction unit 1 2 BSPP thread Label for laser safety windows CAD views of the front and rear panels of SC 2L modular sample chamber 1998 2015 Applied Photonics Ltd Page 26 of 28 Appendix A2 Example configurations of LIBSCAN 100 system 1998 2015 Applied Photonics Ltd Page 27 of 28 Appendix A3 Certificate of Conformity A APPLIED FX PHOTONICS LASER SPECTROSCOPY SOLUTIONS Applied Photonics Limited Unit 8 Carleton Business Park Skipton North Yorkshire EC BD23 2DE United Kingdom Declaration of Conformity Applied Photonics Ltd declares that the product listed below has been designed and manufactured in compliance with the relevant standards as follows Product name LIBSCAN Modular LIBS System Model Number LIBSCAN 100 ULTRA Laser product safety This device conforms to the principal objectives of safety of laser products by application of the following standards PD IEC TR 60825 14 2004 and BS EN 207 1999 Electrical Safety This device conforms with the principal safety objectives of the European Directive 73 23 EEC as implemented by the Electrical Equipment Safety Regulations 1994 by application of the following standard BS EN 61010 1 2001 Electro Magnetic Compatibility This device conforms wit
3. Step 6 Using the supplied BNC to BNC cable connect the Trigger In port on the LIBSCAN 100 console to the Q Switch Out port on the front of the laser power supply Step 7 Connect the personal computer to the Computer I O port of the LIBSCAN 100 console using the supplied USB 2 0 cable Step 8 Connect the personal computer to the serial port on the front panel of the ICE 450 laser power supply using the supplied Serial to Serial lead If the personal computer is not equipped with a serial port it will be necessary to use a Serial to USB converter note that this device usually requires the installation of a software driver on the personal computer refer to instructions written on the CD ROM supplied with the Serial to USB converter lead 1998 2015 Applied Photonics Ltd Page 16 of 28 Interlock OUT connects to Interlock OUT POWER VIDEO TRIGGER CLASS 4 INTLK WARNING OUT IN es WARNING OUT LIGHT on front of the ON ICE 450 laser Spectrometer O i power supply trigger input H ESR EEN connects to P Rages Q Switch Interlock IN Out BNC SY _ Lae H connects to aa ee te izvo 12VDC FUSE INTLK INTLK va Lan power supply O D OVERRIDE IN on front of the i i pada TaN ICE 450 laser power supply 12 Volt DC power input USB 2 0 lt 2 5 Amp connection for external computer Interlock Out Q Switch Out Interlock In RS232 Serial Port IOIOT Front view of ICE 450 PSU sh
4. LIBSCAN 100 Console ICE 450 PSU USB 2 0 amare A INTLK OUT BNC ee INTLK IN BNC a Trigger In BNC Sa 12 VDC 12 VDC plug in PSU Rees USB video a sy grabber oe ee oe on iz reS wos eee USB 2 0 Video Out Phono PC Laptop Tablet LIBSCAN 100 Head Schematic diagram illustrating connections between LIBSCAN 100 components 1998 2015 Applied Photonics Ltd Page 15 of 28 Step 4 Connect the coolant pipes and electrical cables supplied with the laser between the LIBS head and the ICE 450 laser power supply Step 5 Follow Quantel s instructions for filling the ICE 450 laser power supply with coolant water Mains Phono power lead connection Electrical to PC for connections imaging to External VO D Sub CCD camera type port on ICE 450 PSU Water cooling line External connections F O D Sub type port Rear view of LIBSCAN 100 head showing electrical water connections to ICE 450 PSU and Video Out connection to PC for the CCD camera Step 6 Connect the 12 Volt DC 2 5 Amp plug in mains power adaptor to the LIBSCAN 100 console Step 7 Using the supplied BNC cables connect the INTLK OUT connector on the LIBSCAN 100 console to the INTLK OUT connector on the ICE 450 laser power supply Do likewise for the INTLK IN connections Note that the connections should be made as follows INTLK IN to INTLK IN and INTLK OUT to INTLK OUT
5. LIBSCAN system and LIBS 6 and LIBS 8 integrated LIBS modules configurations it is the responsibility of the user to conduct a risk assessment to establish whether or not the laser safety windows provide adequate protection for the particular laser being used If in any doubt you should consult your Laser Safety Officer and or Applied Photonics Ltd for advice on this matter Warning the Applied Photonics Ltd modular sample chambers are designed specifically for use with our LIBSCAN and our LIBS 6 LIBS 8 integrated LIBS modules range of products and should not be used with any other laser device or product If in doubt seek advice from the manufacturer Applied Photonics Ltd 2 3 Electrical The LIBSCAN system contains electrical circuits operating at 12 VDC at a maximum current of 2 5 Amp Accordingly they pose no electric shock risk The laser head located inside the LIBSCAN head and associated power supply however contain electrical circuits operating at potentially lethal voltage and current levels Consult the manufacturer s User Manual supplied with the laser for further guidance on the safe use of the laser 1998 2015 Applied Photonics Ltd Page 6 of 28 3 General description 3 1 Overview The main components of LIBSCAN 100 ULTRA with SC 2L sample chamber fitted are illustrated in the following figure Flexible umbilical LIBSCAN 100 head Laser power supply ICE 450 LIBSCAN 100 console
6. adaptor 12 VDC 2 5 Amps supplied with LIBSCAN 100 The Interlock Override key is used to override the laser safety interlock when the LIBSCAN system is required to be used in open beam configuration i e without a sample chamber To override the interlock the keyswitch should be turned on by turning clock wise The Class 4 Warning LED will flash continuously when the keyswitch is activated and the laser is in active mode When the keyswitch is set to off the Class 4 Warning LED will be extinguished indicating that the laser safety interlock is operating The key should be removed from the Interlock Override to prevent unauthorised activation of the interlock override It is important to be aware that when a sample chamber is used and the Interlock Override key is activated the laser may be activated when the sample chamber door is open So the user must treat the LIBSCAN 100 equipment as a Class 4 laser product whenever the Interlock Override key is activated regardless of whether a sample chamber is fitted or not 3 3 LIBSCAN head The LIBSCAN head contains the laser and associated optics required to focus the laser beam on to a sample and collect the plasma light for transmission to the spectrometers located within the LIBSCAN 100 console Two versions are available 6 channel and 8 channel The 6 channel version is illustrated throughout this User s Manual The head is designed to accommodate a miniature CCD came
7. 0 in open beam configuration Warning Class 4 Laser Product Only suitably trained and experienced persons under the supervision of a duly appointed Laser Safety Officer should operate LIBSCAN 100 in open beam configuration LIBSCAN 100 may be used without the sample chamber if required Under these conditions the laser beam is not contained i e the equipment is a Class 4 laser product and hence additional safety precautions must be observed including the use of appropriate laser protective eyewear and operating LIBSCAN in a suitable controlled environment e g a laser laboratory Important it is the responsibility of the user to conduct an appropriate risk assessment prior to using LIBSCAN 100 in open beam mode If the sample chamber is not fitted to the LIBSCAN 100 head it will be necessary to activate the Interlock Override by turning the key switch to the ON position i e turn clockwise The two LED warning lights will commence flashing assuming the laser is in an active state WARNING As outlined in Section 2 1 activating the Interlock Override will disable the sample chamber safety interlock feature and allow the LIBSCAN 100 head to emit potentially hazardous levels of laser radiation i e Class 4 laser product It is the responsibility of the user to ensure that safety is maintained when operating LIBSCAN 100 in this configuration As a minimum it will be necessary to operate LIBSCAN 100 in a laser controlled are
8. 2 2 Safety 2 1 Laser radiation LIBSCAN contains a high power Q switched Nd YAG laser Class 4 and so it is imperative that it 1s operated only by suitably trained and experienced persons who are fully aware of the hazards inherent to this type of high power laser equipment It is imperative also that prior to using the equipment an appropriate risk assessment is conducted in such a way as to take account of the proposed use of the equipment the environment in which the equipment is to be operated and how its use may affect people who are not directly involved with the use of the equipment LIBSCAN is designed to meet the laser safety requirements of the relevant European standards BS EN 60825 and USA standards ANSI Z136 1 2007 Although LIBSCAN may be supplied with a sample chamber which provides adequate containment of the laser radiation to Class 1 Accessible Emission Limits it is possible for the user to operate LIBSCAN without the sample chamber 1 e operation in open beam mode as may be required for certain types of experiment Accordingly it is necessary to consider LIBSCAN to be a Class 4 Laser Product and so by definition the equipment poses a risk of personal injury eye skin injury and poses a fire risk As with all Class 4 laser products appropriate 1998 2015 Applied Photonics Ltd Page 3 of 28 safety precautions must be taken as identified via a suitable risk assessment conducted by the user in consul
9. LIBSCAN OO Ultra Modular LIBS System User s Manual May 2015 Doc Ref UM 0168 01 02 MN APPLIED AX PHOTONICS LASER SPECTROSCOPY SOLUTIONS Applied Photonics Ltd Unit 8 Carleton Business Park Skipton North Yorkshire BD23 2DE United Kingdom Tel 44 0 1756 708900 Fax 44 0 1756 708909 Web www appliedphotonics co uk Contents 1 Introduction 2 Safety ZA Laser radiation 2 2 Note on the laser safety window material used in the modular sample chambers 23 Electrical 3 General description aN Overview 3 2 LIBSCAN 100 console 3 3 LIBSCAN head 3 4 Laser beam expander and plasma light collection optics 3 5 Modular Sample Chamber Connection 3 5 1 SC 2C modular sample chamber 3 5 2 SC 2L modular sample chamber 3 6 ICE 450 laser power supply 3 7 Imaging camera and associated components 4 Assembly of LIBSCAN system sA Operating procedure 6 Shut down procedure dis Operating LIBSCAN in open beam configuration 8 Maintenance and inspection 9 Shipping and storage 10 Trouble shooting fault finding Appendices Al Modular sample chambers A2 Example configurations of LIBSCAN system A3 Certificate of Conformity 1998 2015 Applied Photonics Ltd 19 20 21 21 21 22 23 21 28 Page 2 of 28 1 Introduction The LIBSCAN 100 Ultra is a modular design LIBS system which offers a highly versatile adaptable and upgradeable product suitable for use either in a laboratory env
10. a e g a laser laboratory and for all personnel in the controlled area to wear appropriate laser protective eyewear Consult your Laser Safety Officer before operating LIBSCAN 100 in this mode 8 Maintenance and inspection LIBSCAN 100 should be periodically inspected for signs of damage or wear and tear Of particular importance are the safety features including the laser safety windows and the laser safety interlock mechanisms and associated electrical circuits If any damage to the laser safety windows is observed or suspected or the sample chamber door interlock switch is not functioning correctly LIBSCAN 100 should be temporarily removed from service until the fault is rectified For maintaining and inspecting the Quantel Big Sky laser the documentation supplied with the laser should be consulted If in any doubt contact the manufacturer Applied Photonics Ltd for further advice on maintenance and inspection of the product 9 Shipping and storage The LIBSCAN 100 system should be kept in a clean dry environment which is free from extremes of temperature The equipment contains sensitive optical and electro optical components and so should be protected from excessive vibration or shock During transport the LIBSCAN 100 system and associated components should be packed in such a way as to prevent damage from shock or vibration and protected from ingress of dust For shipping or storage of the laser refer to the laser manufacturer s instru
11. ample chamber 1998 2015 Applied Photonics Ltd Page 12 of 28 3 6 ICE 450 laser power supply See Quantel s instructions for a complete description of the ICE 450 laser power supply and cooling group unit Mains power lead Interlock OUT BNC port Interlock IN BNC port ee OUT BNC port External I O D Sub type port Water line connections RS232 serial BNC clamping piece used to prevent unauthorised disconnection of port laser safety interlock BNC connectors labelled IOIOT Schematic diagram illustrating ICE 450 laser power supply 1998 2015 Applied Photonics Ltd Page 13 of 28 3 7 Imaging camera and associated components The imaging camera is offered as an optional feature for LIBSCAN 100 A miniature colour CCD camera is installed inside the LIBSCAN 100 head and is located within the black tubular holder at the 12 O clock position at the front of the head illustrated below The tubular holder is fitted with an optical filter to protect the CCD camera from damage due to possible high levels of stray laser light 1064 nm The electrical connections to the camera are accessible at the rear of the LIBSCAN 100 head and video images may be fed to a computer via the USB frame grabber supplied with the imaging kit Viewing angle of miniature CCD camera relative to laser beam Laser beam Image of LIBSCAN 100 head showing viewing angle of miniature CCD camera The specifi
12. cations for the miniature CCD camera are 1 3 inch CCD colour sensor 473 000 pixels Micro f 12 mm 24 degree field of view Adjustable focus approx 20 mm to infinity 12 VDC 65 mA 1998 2015 Applied Photonics Ltd Page 14 of 28 4 Assembly of LIBSCAN 100 system Step 1 LIBSCAN 100 should first be checked for obvious signs of damage loose fixings etc prior to use If any of the components of the instrument are found to be of suspect condition take remedial action before assembling and using the instrument Of particular importance are the safety critical components such as the laser safety windows and electrical interlock circuits of the sample chamber Seek advice from the manufacturer if necessary Do not operate LIBSCAN 100 with any of the covers or windows removed Step 2 Prior to connecting the laser power supply personal computer etc the LIBSCAN 100 head should first be placed on a suitable surface such as a laboratory bench or optical table Itis highly desirable to secure the LIBSCAN 100 head in some way e g by utilizing the feet attached to the base of the LIBSCAN head and which are designed to suit a metric or imperial optical table to prevent accidental dropping of the head resulting in possible damage to the sensitive components inside Step 3 If the sample chamber is to be used fit the LIBSCAN 100 head to the sample chamber using the four M5 screws supplied with the unit as illustrated in the previous figures
13. ctions for the correct procedure The laser power supply and laser head within the LIBSCAN 100 head MUST be drained of coolant water if there is any possibility of the unit being exposed to temperatures below 4 Celsius e g during transit Failure to do so could result in serious damage to the laser head and or the laser power supply The laser manufacturer s instructions should be followed for draining coolant water from the laser power supply and the laser head 1998 2015 Applied Photonics Ltd Page 21 of 28 10 Trouble shooting fault finding Laser does not activate 1 Is the laser shutter on the LIBSCAN 100 head set to the OPEN position 2 Is the safety interlock connected correctly 3 Is the Class 4 Warning indicator light on laser power supply controller flashing If yes then check that sample chamber door is fully closed If a sample chamber is not fitted to the LIBSCAN 100 head and the equipment is required to be operated in open beam 1 e Class 4 Laser Product mode then the Interlock Override will need to be activated 4 If the safety interlock appears to be working correctly but the laser still does not activate refer to the operating instructions provided with the laser Laser induced plasma appears to be adequately intense although a poor signal is observed on some or all of the spectrometer channels 1 Are the data acquisition settings on the LIBSoft software set up correctly 2 Is the composit
14. e focal plane of the laser beam is set incorrectly e it is set to be in front of the sample adjust position of sample so that the focal plane of the laser beam is coincident or preferably just into the sample surface 2 On irradiation by the laser beam the sample is creating considerable quantities of particulates in the path of the laser beam Try cleaning the surface of the sample if loose material e g oxide surface contamination etc is present Reducing the laser energy and or increasing laser beam spot size on the surface of the sample may also help 1998 2015 Applied Photonics Ltd Page 22 of 28 Appendices Appendix A1 Modular sample chambers A range of modular sample chambers is available for use with the LIBSCAN 100 system see table below These sample chambers are also suitable for use with our LIBS 6 and LIBS 8 integrated LIBS modules Two types SC 2C and SC 2L are described in more detail in the remainder of this User s Manual 2 axis translation stage 20 mm 2 3 axis translation stage 50 mm travel per stage manual control Fume extract port Internal LED 2 axis translation stage 20 mm travel per stage manual control travel per stage manual control Fume extract port Internal LED light light Approx overall dimensions 170 Approx overall dimensions 260 x x 170 x 270 mm 260 x 320 mm Single axis translation stage 20 2 mm travel per stage manual control i A
15. e necessary to adjust the position of the aperture nozzle to obtain correct positioning of the sample surface see figure below Step 5 Follow the instructions provided with the LIBSoft software to correctly configure the spectrometers and the laser for acquiring data Please refer to the LIBSoft Software User Manual for further information regarding the acquisition of spectra Note that the laser Remote Box should not be used while LIBSoft is running as this will result in the laser reverting to manual control To resume LIBSoft software control of the laser it will be necessary to switch off the laser and close LIBSoft then switch on the laser followed by re starting LIBSoft Fault warning light View of front panel of laser power supply controller referred to as Remote Box in Quantel s documentation 1998 2015 Applied Photonics Ltd Page 19 of 28 Distance may be adjusted by Locking screw several mm by rotating the Do not over aperture nozzle Use this feature tighten to set position of aperture nozzle to facilitate correct positioning of sample surface LS S APPLIED CAD view of LIBSCAN 100 head showing method for adjusting position of aperture nozzle Step 6 Adjustment of the laser output energy is achieved by adjusting the Flashlamp to Q Switch FL QS delay time When running the laser in manual mode the FL QS delay time may be adjusted via the Remote Box refer to Quantel s instructions for t
16. e with imaging kit if fitted Transparent aperture nozzle Laser beam output aperture Gas purge outlet Front view of LIBSCAN 100 head 6 channel version showing plasma light collection lens array CCD camera LED lights laser aperture and gas purge outlet Electrical connections to laser head Video Out electrical connection for imaging camera Water Dimmer control connections for LED lights to laser head Rear view of LIBSCAN 100 head showing electrical water connections to laser head and electrical connection for the camera 1998 2015 Applied Photonics Ltd Page 9 of 28 3 4 Laser beam expander and plasma light collection optics The optical configuration used in the LIBSCAN 100 system is illustrated schematically in the following diagram The laser beam expander consists of three lenses and is used to provide a tightly focussed laser beam at nominally 80 mm from the aperture of the beam expander 90 mm for the 8 channel LIBSCAN 100 The brass tubular piece which houses the beam expander lenses is threaded so that rotating it causes the focal plane of the laser beam to move A special tool is used to rotate the brass tubular piece after first removing the nozzle aperture for access The design allows for approximately 7 5 mm of adjustment as illustrated in the following diagrams The plasma light collection optics are angled at approx 17 4 degrees 15 7 degrees for the 8 channel LIBSCAN and are designed to c
17. h the principal objectives of the European Directive 89 336 EEC as amended by 91 31 EEC and 93 68 EEC as implemented by The EMC Regulations SI 1992 No 2372 and amendment SI 1994 No 3080 by application of the following standard BS EN 61326 1 2006 Year of affixation of the CE Marking 2015 Signed Name Andrew I Whitehouse Title Managing Director Place Applied Photonics Ltd Unit 8 Carleton Business Park Skipton North Yorkshire BD23 2DE United Kingdom Date March 2015 1998 2015 Applied Photonics Ltd Page 28 of 28
18. he laser The factory setting is typically around 140 microseconds for maximum laser output energy although this will vary from laser to laser Increasing the FL QS delay will reduce the laser output energy The user will only be able to adjust the FL QS delay setting from the minimum factory setting typically 140 microseconds up to 500 microseconds although the laser output energy will likely be approaching zero with a FL QS delay setting of approx 400 microseconds When running the laser via LIBSoft the laser energy may be adjusted in a similar fashion but by entering an appropriate FL QS delay time via LIBSoft rather than the Remote Box Step 7 After successfully testing LIBSCAN 100 it is now ready for use Measurement conditions such as Nd YAG laser pulse energy and position of sample surface with respect to laser beam focal plane will need to be adjusted to suit the requirements of the experiment 6 Shut down procedure Step 1 Shut down LIBSoft software if being used and then switch off laser power supply and isolate from mains electrical supply Step 2 Close the laser safety shutter on the LIBSCAN 100 head by turning the handle located on LHS side panel of LIBSCAN 100 head to vertical position Step 3 Isolate 12 Volt DC plug in power adaptor from mains electrical supply and disconnect from LIBSCAN 100 console Step 4 Disconnect gas supply if connected 1998 2015 Applied Photonics Ltd Page 20 of 28 7 Operating LIBSCAN 10
19. iguration you should seek advice from your Laser Safety Officer on this matter e ALWAYS switch the laser off when not in use and remove the key from the keyswitch of the laser power supply to prevent unauthorised activation e NEVER operate the LIBSCAN system in areas where explosive gas mixtures may be present e NEVER operate the LIBSCAN system with any access cover panel or protective window removed 1998 2015 Applied Photonics Ltd Page 4 of 28 e NEVER place inside the sample chamber flammable liquids or any other material which may give rise to flammable explosive gas mixtures Activation of the laser under these conditions could result in an explosion leading to severe personal injury and or fire hazard Remember that the laser induced plasma is a source of ignition e ALWAYS thoroughly inspect the LIBSCAN system for damage prior to use Particular attention should be given to the laser safety windows and the electrical safety interlock fitted to the door of the sample chamber e NEVER point the LIBSCAN head at a person even with laser switched off especially towards the eyes even if the person is wearing laser safety eyewear The laser should be considered active unless the laser power supply is deactivated and the safety shutter located on the side of the LIBSCAN head is switched to the CLOSED position e NOTE that the transparent acrylic nozzle aperture does not provide any protection to the user against ex
20. ion of the sample such that emission lines are not expected to be seen on some or all of the spectrometer channels If yes then use an alternative sample which has numerous emission lines e g an iron containing material such as steel to check for correct operation of the LIBSCAN 100 system 3 Is the sample positioned correctly relative to the laser beam focus It may be necessary to adjust the position of the aperture nozzle 4 Is the laser pulse energy too low Increase if necessary Recorded spectra show some emission lines which are saturating the detector flat top appearance to the emission line 1 Reduce the pulse energy of the laser using the controls on the front panel of the laser power supply manual mode of operation or via the LIBSoft software software control mode of operation 2 Increase spot size of laser beam on sample by adjusting the position of the sample relative to the focal plane of the laser beam Recorded spectra show some emission lines suffering from self reversal i e a dip in the centre of the emission line 1 Reduce the pulse energy of the laser 2 Increase spot size of laser beam on sample by adjusting the position of the sample surface relative to the focal plane of the laser beam it is usual to set focus to be approximately 1 to 3 millimetres into the sample surface Air breakdown is observed in the path of the laser beam just in front of the sample surface 1 Th
21. ironment or in the field The modular design is also particularly well suited to research and development work and hence LIBSCAN will be of value to organisations who wish to conduct their own LIBS R amp D program and who may wish for example to integrate LIBSCAN with an industrial process control application LIBSCAN is currently available with a 100 mJ 1064 nm laser LIBSCAN 100 ULTRA although versions configured for alternative laser powers and wavelengths e g 355 nm 266 nm and with double pulse option are available as a special order LIBSCAN is available with either six or eight plasma light collection channels and so therefore may be used with up to eight individual spectrometers Various types of modular sample chamber are available for LIBSCAN including ones equipped with computer controlled multi axis sample stages see Appendix A2 This User s Manual provides the necessary information needed to configure the integrated LIBSCAN system and how to use it safely It is assumed that the user will be familiar with the safety issues arising from the use of high power lasers and will have preferably been trained in the safe use of laser products Ideally your organisation will have an appointed Laser Safety Officer in which case this person should be consulted before operating LIBSCAN Examples of typical configurations of the LIBSCAN system including illustrations of how it may be used with various sample chambers are given in Appendix A
22. lowing figure The sample chamber is equipped with a breadboard plate which is attached to a manual three axis translation stage 50 mm travel per stage The breadboard plate has an array of M6 tapped blind holes on 25 mm centres and which may be used to facilitate the attachment of a sample holder etc Movement of the breadboard is achieved by adjustment of the knobs on the sides and top of the sample chamber as illustrated below Adjustment knob for z axis translation stage Laser safety window Door with magnetic catch and dual electrical interlocks Adjustment knob for _ y axis translation stage Adjustment knob for x axis translation stage View of SC 2L modular sample chamber Gooseneck Fume LED light extract nozzle Laser plasma Sample Breadboard plate with array of M6 tapped holes on 25 mm centres Inside of SC 2L sample chamber with LIBSCAN 100 head fitted and showing a laser induced plasma on a metallic target 1998 2015 Applied Photonics Ltd Page 25 of 28 The sample chamber is equipped with a number of features as illustrated in the following figures Z axis Gooseneck p a adjustment knob LED light ume extrac 4 Breadboard plate with nozzle array of M6 tapped holes on 25 mm centres Electrical door interlock switch Magnetic catch for door Electrical door interlock switch gt o X axis adjustment knob Y axis
23. lows the safety interlock feature to be disabled It is necessary to use this override feature when operating the LIBSCAN without a sample chamber i e operating in open beam mode In view of this the LIBSCAN system must be categorised as a Class 4 laser product since by design the product may be used in such a way that the laser beam is not contained i e open beam mode of operation If however the sample chamber is correctly fitted to the LIBS module and the Interlock Override is switched off and the key removed then the laser radiation is adequately contained to Class 1 Accessible Emission Limits by the design of the hardware You should consult your Laser Safety Officer to ensure that this meets any local rules and regulations concerning the operation and use of Class 4 laser systems within your organisation IMPORTANT e READ and UNDERSTAND both this User s Manual and the instructions provided by the manufacturer of the laser before operating the LIBSCAN system e NEVER allow unauthorised and or untrained persons operate the LIBSCAN system e Only suitably qualified and authorised persons should activate the Interlock Override keyswitch feature The key MUST be removed from the Interlock Override keyswitch and held by a responsible person e g your Laser Safety Officer when this feature 1s not required e ALWAYS use appropriate laser safety protective eyewear when operating the LIBSCAN system in open beam conf
24. o the LIBSCAN 100 head ensure that the breadboard plate 1s positioned sufficiently low so as not to make contact with the aperture nozzle of the LIBSCAN head use the y axis adjustment knob to lower the breadboard plate Be careful to fit the sample chamber squarely to the LIBSCAN 100 head so as not to cause damage to the electrical connectors Secure SC 2C sample chamber to LIBSCAN 100 head using the four M5 cap head screws CAD views of SC 2C modular sample chamber illustrating method of attachment to LIBSCAN 100 head CAD views of SC 2C modular sample chamber attached to LIBSCAN 100 head 1998 2015 Applied Photonics Ltd Page 11 of 28 3 5 2 SC 2L modular sample chamber The LIBSCAN 100 head is designed to fit to the top of the sample chamber using four M5 screws as illustrated in the following figures accessed from inside the SC 2L sample chamber Before fitting the LIBSCAN 100 head to the sample chamber ensure that the breadboard plate is positioned sufficiently low so as not to make contact with the aperture nozzle of the LIBSCAN 100 head Be careful to fit the LIBSCAN 100 head squarely to the sample chamber so as not to cause damage to the electrical connectors Secure LIBSCAN head to SC 2L sample chamber using the four M5 cap head screws LIBSCAN 100 head SC 2L modular sample chamber Breadboard plate where sample is located Gooseneck LED light CAD view of LIBSCAN 100 head fitted to SC 2L modular s
25. ollect light from the region in space defined in the following diagram The transparent aperture nozzle is threaded so that rotation causes it to move along the optic axis of the laser beam range of travel is approximately 7 5 mm it may be removed from the body of the LIBS module by unscrewing further The main purpose of the transparent aperture nozzle is to provide a convenient means of setting the distance to the sample surface The nozzle aperture also provides containment of the purge gas to ensure the sample surface and laser induced plasma region are effectively purged of atmospheric air and provides physical protection for the laser and plasma light collection optics and imaging camera 1f fitted A Transparent ho s aperture nozzle Adjustment range of h S transparent aperture nozzle approx 7 5 mm Brass holder _ containing laser beam expander lenses a Eye Threaded section Fibre optic cable to spectrometer Adjustment range of focal plane of laser beam approx 7 5 mm Threaded section Close up view of laser beam focus and field of view of plasma light collection optics 1998 2015 Applied Photonics Ltd Page 10 of 28 3 5 Modular Sample Chamber Connection 3 5 1 SC 2C modular sample chamber The SC 2C modular sample chamber is designed to fit to the LIBSCAN 100 head using four M5 screws as illustrated in the following figures Before fitting the sample chamber t
26. owing but laser flashlamp not yet activated check for correct operation of the safety interlock by observing the Class 4 Warning light on the front panel of the LIBSCAN 100 console and opening closing the door of the sample chamber with LIBSCAN 100 head fitted and all interlock cables correctly fitted If the interlock is working correctly the Class 4 Warning light should flash when the sample chamber lid is open and be constantly illuminated when the lid is closed If the interlock is found not to be operating correctly refer to the Fault Finding section of this User s Manual Note that if the LIBSCAN 100 head is removed from the sample chamber the interlock circuit 1s designed to de activate the laser see section 6 on Operating instrument in open beam configuration Warning do not operate LIBSCAN 100 if the safety interlock is not functioning correctly Step 4 Place a sample of material e g a metal block at the focal plane of the Nd YAG laser beam inside the sample chamber Close the door of the sample chamber Using the controls on the Remote Box of the ICE 450 laser power supply see following figure and refer to laser manufacturer s instructions the laser beam may now be fired by 1 first activating the flashlamp and 11 then activating the Q Switch If the sample material is located at or near to the focal plane of the laser beam a laser induced plasma will be produced on the surface of the sample It may b
27. owing Q Switch and interlock connections to the LIBSCAN 100 console and serial port OIOI connection to PC Step 9 If there is a need to use an external laser warning light e g located at the entrance door to a laser laboratory this should be connected to the Warning Light port on the LIBSCAN 100 console The Warning Light port provides a 12 VDC 1 Amp max centre pin ve voltage when the laser is in an active state Step 10 If the gas purge feature is to be used connect a suitable inert gas supply Argon Helium Nitrogen Air to the Inert Gas Supply port using 4 mm OD flexible tubing a length of this type of tubing is supplied with the LIBSCAN 100 coloured green WARNING the gas supply MUST be externally regulated to restrict pressure to less than 5 psi 2 to 3 psi should be adequate and to control the flow rate DO NOT USE FLAMMABLE GASES 1998 2015 Applied Photonics Ltd Page 17 of 28 The following image illustrate how the LIBSCAN 100 system should look after final assembly Images of LIBSCAN 100 system with SC 2L sample chamber and desktop PC after final assembly 1998 2015 Applied Photonics Ltd Page 18 of 28 5 Operating procedure Step 1 Open laser safety shutter located on LHS side panel of LIBSCAN 100 head by turning handle to horizontal position Step 2 Activate laser by switching on key switch see instructions supplied with laser Step 3 With the laser switched on coolant water fl
28. posure to direct or scattered laser radiation The function of the nozzle aperture is described in Section 3 4 Acrylic nozzle aperture Laser aperture Laser warning Laser safety shutter switch warning label indicator light Horizontal OPEN Vertical CLOSED www appliedphotonics co uk Image of LIBSCAN head showing location of laser shutter switch warning indicator light and laser aperture warning label 1998 2015 Applied Photonics Ltd Page 5 of 28 2 2 Note on the laser safety window material used in the modular sample chambers The laser safety window material fitted to the modular sample chambers is rated as follows L USA Standard UK amp European Standard i et m ANSI Z 136 1 BS EN 207 avelen 5 Optical Protection Level R Density Q switched laser L6 nm 1064 D6 R L6 at 1064 nm indicates a protection level of maximum spectral transmittance of 10 at 1064 nm for a pulsed laser of pulse length 10 10 seconds i e a Q switched laser The laser safety windows used in Applied Photonics Ltd s range of modular sample chambers provide adequate protection against scattered laser light of wavelength 1064 nm 355 nm and 266 nm such that Class 1 Accessible Emission Limits are met if the sample chamber is used correctly and laser pulse energies are not excessively high i e typically less than 250 mJ with a 5 10 ns pulse length Given that the modular sample chambers may be used with a variety of
29. pprox overall dimensions 110 x Approx overall dimensions 110 x 120 x 200 mm 120 x 250 mm 3 axis translation stage 50 mm travel per stage manual control Fume extract port Internal LED light Approx overall dimensions 475 x 370 x 450 mm 3 axis translation stage 50 mm travel per stage XY computer controlled Fume extract port Internal LED light Approx overall dimensions To Be Advised Modular sample chamber designed to analyse liquids Requires inert gas and flow of liquid to be connected to chamber via two ports designed to accept 4 mm flexible tubing Liquid drain port in base of chamber Micrometre control of position of liquid surface relative to focal plane of laser beam Approx overall dimensions 225 x 245 x 200 mm Current range of modular sample chambers manufactured by Applied Photonics Ltd WARNING The modular sample chambers described above are designed specifically for use with our LIBSCAN range of modular LIBS systems and our LIBS 6 LIBS 8 integrated LIBS modules The specifications for the laser safety windows are as follows ANSI Z 136 1 BS EN 207 Optical Protection Level R Density Q switched laser Laser Wavelength nm D6 L6 Protection Level R L6 at 1064 nm indicates a protection level of maximum spectral transmittance of 10 at 1064 nm for a pulsed laser of pulse length 10 10 seconds i e a Q switched laser Since the LIBS 6 LIBS 8 integrated LIBS mod
30. ra and associated components used with the optional imaging kit The main features of the LIBSCAN head fitted with the optional imaging kit are illustrated in the following figures Use of the transparent aperture nozzle allows the operator to view the laser plasma even when a sample is placed up against the aperture WARNING Note that the transparent aperture nozzle does NOT provide any protection to the user against exposure to the laser radiation It is not necessary to have an aperture nozzle fitted to the LIBSCAN 100 head although it is beneficial to do so as it provides the following functions 1 facilitates correct positioning of the sample being analysed 11 helps to direct the purge gas if used to the region in space where the laser plasma will be formed and 111 provides protection for the optics etc against accidental mechanical damage LIBSCAN 100 head with aperture nozzle removed LIBSCAN 100 head with aperture nozzle fitted 1998 2015 Applied Photonics Ltd Page 8 of 28 Laser warning indicator light Grub screw for locking aperture nozzle do not over tighten Electrical connection to sample chamber Circular array of six Miniature CCD ee lens holders used to optional feature collect plasma light The purple lens holder is for collection of deep UV the blue lens holders for UV VIS and the red lens holders are for collection of VIS NIR Array of high brightness white LED lights for us
31. tation with a suitably qualified and experienced Laser Safety Officer The most significant hazard relating to exposure of personnel to the laser radiation 1s eye injury since direct or scattered laser radiation produced by LIBSCAN can cause serious and permanent injury to the eyes including blindness such injury may be instantaneous Precautions must be taken to avoid exposure of personnel to hazardous levels of laser radiation Such precautions may include the setting up of a temporary or permanent laser controlled area e g a laser laboratory Other measures may also be necessary as determined by appropriate and thorough assessment of the risks i e a risk assessment conducted by the personnel responsible for the safe use of the LIBSCAN system Consult the manual supplied with the laser for further guidance on the safe use of the laser The door of the sample chamber is equipped with a dual electrical interlock switch which is designed to prevent activation of the laser unless the door is fully closed The Intlk In and Intlk Out BNC connectors on the front panel of the LIBSCAN console connect with the Intlk In and Intlk Out BNC connectors on the front panel of the laser power supply using the two supplied BNC leads Removal of the sample chamber from the LIBSCAN head will also activate the interlock 1 e prevent activation of the laser The key switch operated Interlock Override see section 3 2 of this User s Manual al
32. ules may be used with various laser devices it is the responsibility of the user to establish whether the protection offered by the laser safety windows is 1998 2015 Applied Photonics Ltd Page 23 of 28 adequate for the laser being used If in doubt seek advice from a suitably qualified Laser Safety Officer or contact Applied Photonics Ltd before operating the laser equipment A general view of the SC 2C modular sample chamber is given in the following figure The sample chamber is equipped with a breadboard plate which is attached to a manual two axis translation stage approx 20 mm travel per stage The breadboard plate has an array of M6 tapped blind holes on 25 mm centres and which may be used to facilitate the attachment of a sample holder etc Movement of the breadboard is achieved by adjustment of the knobs on the side and top of the sample chamber as illustrated below Door with magnetic catch and dual electrical interlocks Electrical connection to LIBSCAN head Laser safety window Adjustment knob Attachment screws for y axis for fitting sample translation stage chamber to LIBSCAN head Adjustment knob for x axis gt translation stage te ty me ba Breadboard plate with array of M6 tapped holes on 25 mm centres CAD views of SC 2C modular sample chamber 1998 2015 Applied Photonics Ltd Page 24 of 28 A general view of the SC 2L modular sample chamber is given in the fol
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