Decay Solenoid User Manual
Contents
1. 11 3 8106 910 12 TT 12 3 2 Regenerating the Cryogenic Absorber ss 12 OS MEC Ie qioce 14 3 4 Fridge and Magnet Cooldown cccccccccceeeeeeecceeeeeeeeeeeeseeeesaeeesseeeeseaees 16 3 4 1 Preconditions for Fridge and Magnet Cooldown Error Bookmark not defined 3 4 2 Starting the Compressor eeeseeeeeeeeen eene 16 3 4 3 Starting the Cooldown ccccccccseececeeeeeeeeeeeeeeeseeeesaeeeeseeeesaaeeess 17 3 4 4 Cooldown Lane nnn nn nenne nennen nennen nne nn nne sanas 19 3 5 Warm up Instructions L 19 Powering the Decay Solenoid iin a 20 en Peck irn Ris 20 nie Niel NET 20 4 3 Pre power up check list 0 sense nennnnnznnnnnnnnnnnnn nani nani nani nanz nazz nanna 21 4 4 Preparing the Decay Solenoid 21 4 5 Turning the Decay Solenoid Power 24 4 6 Ramping the solenoid power supply down and making2. 43 variables connected to 106 Server OPCServer WinCC gt connected ServerCOPCServer WinCC gt active it All initialization complete Figure 2 OPC IOC Shell Decav Solenoid User Manual WinCC can be opened by selecting the Quickstart icon if found next to the start button This will open the window shown Figure 2 and the Linde programme should start automatically If not select the activate play icon indicted in Figure 3 WinCCExplorer C Program Files Siemens WinCC WinCCProjects CH220408 CH220408 mcp E loj x Fie Edit View Tools Help D m 3 Li EE ue Fl ijilil Tag Management H E gt Structure tag amp Load Online Changes Cross Reference Editor Press F1 for Help External Tags 372 License 1024 Num Z Figure 3 WinCC Explorer window 2 1 1 Recovering the system after a power outage When the DS losses power unexpectedly the following things should be noted when recovering the system 2 2 eo The system often regains power in the wrong order It may be necessary to power cycle the IOC so that when it turns on it receives all the signals it is expecting Sensors on the mimic will need resetting Vacuum pumps will need to be switched back on When resetting the heater in the helium bath initially the interlocks will be red preventing this from happening It w
3. UJ 68 8 B 69 bebe Ey pd Figure 27 Linde refrigerator mimic indicating the liquid helium level 4 4 Preparing the Decay Solenoid for power 1 Put the current lead cooling into operation Go into the Hall i Goto the decay solenoid gas panel on the east end of the north mezzanine and check that hand valve HV14 is open in the vertical position as shown in Figure 29 If itis closed open it 21 Decav Solenoid User Manual li Check that the fan blowing air across the decay solenoid current leads on the platform in the DSA is on and appropriately positioned see Figure 28 Appropriate position j of fan on platform Hand valve HV14 shown in open Figure 28 Appropriate positioning of fan on platform 2 On the Linde control panel operate PV5510 i Hover over valve icon until a pen appears and left click li Click Manual button on the pop up menu a This will open the valve The valve icon will change to green b Close the pop up window that you just used to open the valve 9 21 2010 11 11 08 AM A CHILTONO6 Linte a 866BE 7 m Zi m PV5510 Figure 30 Screenshot of Linde control panel indicating PV5510 control valve icon ii Verify that helium flow through the valves HCV31 and HCV32 as reported on the EPICS based MICE decay solenoid mimic shown in Figure 31 is stable and greater than 20 l min 25 l min is desirable but not a requirement after a
4. ka LA L I Lr Fa LA Main Range Axis hJ rl Lil c LA ki L1 LA Lu T Lr Lu a L M gs go Jagen D i aoo 12 02 10 12 03 10 12 04 10 12 05 10 12 05 10 12 07 10 E a 28 SAT m 6 5005Pa m i 12 5 0 3L min m 12 5 0 5L min MICE SOL CRY CETS QT RT MICE SOL CRY LEVEL OT RL MICE SOL CRY MFEIM OT RF MICE SOL CRY MFIM 02 RF MICE SOL CRY MFIM 03 RF MICE SOL CRY MFIM O43 RF MIL o UI Wy qi I 12 08 10 12 02 10 12 10 10 12 11 10 12 12 10 12 13 10 Main Time Axis GMT Fi B 12 14 10 a Temperature rs 300 Decay Solenoid User Manual 1 0 4 290 as 280 A is 0 5 260 4 0 250 1 5 240 2 0 55 2 5 35m j 200 3 5 190 4 0 an 170 5 0 160 3 coal 150 B 6 0 140 65 130 E 120 7 5 110 zl 100 ap op E kn Pe 10 0 H P ii Pe ka 11 5 2 0 di 12 5 10 H 13 0 12 01 10 12 02 10 12 02 10 12 05 10 12 03 10 12 04 10 12 04 10 12 05 10 12 05 10 12 06 10 12 06 10 12 07 10 12 07 10 12 06 10 12 06 10 12 09 10 12 09 10 12 10 10 12 10 10 12 11 10 12 11 10 12 12 10 12 12 10 12 15 10 12 13 10 12 14 10 12 14 10 5 3 Pressure M2 26 200 42K m i 12 5 0 SL min E i 12 5 0 5L min Main Time Axis GMT 29 rr rer reat teas MARTI F dak ob MICE SOL CRY CLIS O1 RT MICE SOL CRY TFIRM O3 RF MICE SOL CRY MFEM O3 RF Decav Solenoid User Manual 26 200 42K MIlLQS 12 66
5. GMP stable Tu inlet valve cls Sh return valve cls Turbine inlet valve not controlled Shield return valve not controlled Turbines 142 stoped Coldbox shutdowns xl Figure 24 Coldbox start permissives for coldmode window 18 Decav Solenoid User Manual 3 4 3 Cooldown The following sequence of actions is then carried out automatically by the refrigerator controls All relevant valves are found either on the Cold box or Cryostat mimic 1 4 3 5 When the temperature of the outlet of turbine 2 sensor 113155 in the Cold box reaches 170K after about 3 hours the control valve on the inlet to the cryostat CV3170 will automatically open to 100 This allows the helium to flow through the magnet and start cooling it down The control system sets CV1 to 20 and CV2 at 0 The valve on the inlet to the heat exchangers for the returning gas CV3290 remains closed so the helium gas return flow is directed through the one way valve and PV3210 avoiding the heat exchangers The pressure inside the cryostat is about 12 bara which then slowly decreases Also there is no flow through the shields at this stage When the temperature of the inlet of turbine 1 sensor 113130 in the Cold box reaches 230K about five hours after start of cool down the control valve CV3125 will slowly open automatically to 100 This allows helium to flow through the shield and start cooling it When the temperature of the gas returning from
6. MICE Decav Solenoid PSU PSU Set Current flo a C Quench Detected PSU Set V Limit 0 C PSU CT Quench PSU Quench Alarm Lead Flow PSU Current PSU Voltage 48V Backup Overtemp B rridge Readv Mur Lev lt 405 Mur Lev lt 205 Backup Batterv Volts 54 6 Volts a VAC 10 4mBar a VAC 10 3mBar PSU Cooler ILK Fast BEE PSU EXT ILK Ramp Down EXER reser PSU ON EEE Figure 34 MICE DS PSU mimic 5 The power is then ramped up by selecting Ramp to Set Current on the PSU control panel on the front of the PSU 6 The button on the side of the rack must be released above 50A 4 6 Rampingthe solenoid power supply down and making the system safe 1 Select Ramp to zero on the PSU control panel on the front of the PSU The button on the side of the rack must be pressed in when the current goes below 50A 2 When the current has reached zero turn the power supply off using the button on the front of the PSU and the mains breaker 25 Decav Solenoid User Manual 5 Tvpical Cooldown Example 12 2010 5 1 Temperatures Misr 269 m 1 se 235 20K mid 58 28956 22K Bld 56 296 16K ld dO 296 21K 4 447296 19K 310 300 230 220 4 2fQ 260 250 200 230 MICE SOL LRY COR OLAT MICE SOL CRY COR O24 RT MICE SOL CRY COGR Q3 RT MICE SOL LRY COR O4 RT MICE SOL CRY COR O6 RT WIG ESOL GR SY eS es ee BI ERI m
7. allow approximately 30 minutes to elapse to allow the refrigerator to stabilise and the current leads to reach operational temperature during which the flow will steadily increase If the flow has not stabilised at above 20 l min after 30 minutes do not attempt to power the magnet call the Decay Solenoid expert 22 Decav Solenoid User Manual MICE Decay Solenoid Cryo Verum System Return Readings for valves DS Turret Trans Une SHIELD 2 SHIELO 3 SHIELD 4 SHIELD 5 Figure 31 MICE decay solenoid mimic indicating readings for HCV31 and HCV32 3 Onthe MICE Decay Soelnoid Cryo mimic set the Linde Quench Inhibit selection button to the Linde Quench Inhibit state To set the Linde Quench Inhibit selection button to the Linde Quench Inhibit state click on the Linde Quench Inhibit status box on the main panel of the refrigerator mimic and select On from the Linde Quench Inhibit window which opens The status box will turn red with the words Linde Quench Inhibit as seen in Figure 32 Note that the status box will turn green with the words Linde Quench Active when the active state is automatically enabled whenever the current through the solenoid exceeds 50 A On switch in the Linde Quench Inhibit window Linde Quench an Inhibit status box Figure 32 Decay Solenoid Cryo mimic 23 Decav Solenoid User Manual 4 5 Turning the Decay Solenoid Power Supply on 1 Press the
8. 3 0 4 2 07 2 0 5 154 ku bb 0 5 12 01 10 12 02 10 12 02 10 12 03 10 12 03 10 12 04 10 12 04 10 12 05 10 12 05 10 12 06 10 12 06 10 12 07 10 12 07 10 12 08 10 12 08 10 12 09 10 12 09 10 12 10 10 12 10 10 12 11 10 12 11 10 12 12 10 12 12 10 12 13 10 12 15 10 12 14 10 12 14 10 Main Time Axis GMT 8 m m 5 2 Control Valves miD O 100 295 m 0 100 m 0 5 100 2 5 miO 10095 Decav Solenoid User Manual MICE SOL CRY CV O0T RB MICE SOL CRY CV 01 SP MICE SOL CRY CV 02 RB MICE SOL CRY CV 0z 8P 33 Decav Solenoid User Manual 6 Maintenance 6 1 Opening the compressor to air for maintenance Prepare the svstem for being opened to air as follows On DS mimic close CV1 CV2 On Cold Box mimic manually close CV3170 CV3290 CV3125 CV3135 o PV3210 PV3122 PV5510 Shut down compressor On Compressor mimic manually close o CV2160 CV2150 CV2250 Above compressor and Cold Box by hand manually close HV3100 HV3200 At absorber by hand manually close o HV2140 HV2180 At gas analyser by hand manually close o HV2152 HV2252 o Power of the gas analyser Electrically isolate the compressor at the wall and lock off using padlock above isolation box Leave the compressor at pressure for HPC who will then empty the system of oil and vent to air 34
9. MOM or Principal Contractor that the Linde refrigerator and control system is operational and that the magnet refrigerator and helium reservoir have been in a stable operating state for an appropriate length of time This is done by selecting the Mode button indicated in Figure 25 It should read Cooldown end Refrigerator ready in the State column and Coldbox Magnet as indicated in Figure 26 9 21 2010 10 57 13 AM CHILTONO6 od traite Modes Button 4 C eB K 63 E53 55 E Figure 25 Screenshot of compressor mimic indicating Mode button 20 Decav Solenoid User Manual 4 3 Pre power up check list 9 21 2010 10 58 26 AM A CHILTONO6 po mere Alarms or warnings indicated here Should read Cooldown ended Refrigerator ready 6 9 B mz m i Figure 26 Screenshot of Modes screen 1 On the Linde refrigerator mimic in the MLCR check that i No alarms or warnings are indicated by flashing triangle at the top of the screen as shown in Figure 26 li The liquid helium level in the helium reservoir is stable usually 80 level The helium level of the reservoir is indicated in Figure 27 If either of these conditions is not met do not attempt to power the magnet call the Decay Solenoid expert 9 21 2010 11 00 16 AM A CHILTONO6 Senile Indicates liquid helium les 24 level in reservoir should 4 read 90
10. the cryostat sensor 113290 in the Cold box reaches 60K the control valve CV3290 will open to 100 and PV3210 will close to 0 This re directs the return flow of helium from the magnet through the heat exchangers N B This will usually cause the fridge to warm slightly After CV3290 opens step 3 above the cool down is controlled by a PID loop where the limits are set in the State Control window in the PID COOLDOWN flow control box This loop limits the opening of CV1 such that the flow around the magnet measured at is no more than the setpoint currently 5mbar The loop then checks that the temperature at TI21 isn t rising more than 2K every 60mins if it is then the flow through the magnet is reduced by 0 1mBar The aim of this is to ensure that the temperature of the cold trap A3980 in the fridge sensor TI3280 does not rise above 120K when it could start to release contaminants back into the system In a normal cooldown this should not be a problem Linde advised that we should be concerned if the temperature of the cold trap reaches 120K and to shut the fridge down if it reaches 150K During the start of the magnet cooldown Coils 1 5 and Coils 6 10 of the magnet are cooled in parallel This is done automatically by the control system closing valve CV2 opening valve V12 and controlling valve CVf1 When the temperature in the magnet reaches around 20K the valves V12 and CV1 close and the J T valve CV2 op
11. volume The compressor must be in operation so that there is a flow through the absorber 1 Fill the absorber with nitrogen The absorber is full when the level indicator is fully up indicated in Figure 16 2 Turnon the gas analyser which is located directly above the cryogenic absorber shown in Figure 17 The flow should be adjusted using the black control to around 20mm The pressure should be at 1bar and can be adjusted with the green control N B The valve HV2173 the start of the line from the buffer to the gas analyser located on the DSA roof must be open 3 Start the flow through the gas analyser by opening valves HV2252 followed by HV2152 indicated in Figure 16 HV2252 HV2153 and Level HV2253 indicator HV2152 Figure 16 Crvogenic absorber and associated valves 14 Decav Solenoid User Manual 9 Figure 17 Gas analyser The compressor should now be switched on so that the gas is flowing 4 Open valves HV2253 followed by HV2153 indicated in Figure 16 The key to remove the padlock is held by the MOM and is labelled LINDE ABSORBER VALVES This allows the gas to flow through the absorber 5 The gas in the buffer tank can be cleaned by changing the high pressure setpoint between 8bar and 13bar This forces gas in and out of the buffer tank This is done by l On the compressor mimic screen left click on PC2160 indicated in Figure 18 to open the Compressor HP Controller window 9 2
12. 1 2010 10 57 13 AM CHILTONO6 Crate PC2160 8 SS m Figure 18 Compressor mimic screen ii Change the Setpoint value from 13 00 to 8 00 indicated in Figure 19 lil Wait for PI2160 indicated in Figure 18 to read 8bar IV Change the Setpoint value to 13 00 V Continue until the impurity levels are below 10ppm Ensure the final setpoint pressure is 13 00bar 12 97 Jbara Setpoint Setpei Reduced HF 8 50 Jbara Ramp down 0 100 bara s Actual High limit L100 0786 Actual High limit 100 0 11 l 00 196 Figure 19 Compressor HP controller window 15 Decav Solenoid User Manual 6 If the fridge has been idle for a long time and or there is any suspicion of air ingress then it is good to clean the air inside the magnet Only a small flow is acceptable in order not to put strain on the turbines l Change State Control on the Decay Solenoid Cryo mimic to Manual and then to Start Cool Down li On the Coldbox mimic open valve CV3170 by 1096 to get a flow around the magnet lil Aim to get the incoming pressure at FI21 at 5mBar shown on the Decay Solenoid Cryo mimic IV On the Coldbox mimic check CV3125 is partiallv open Then open CV3135 bv 3 this is the return line from the radiation shields V Once the gas is clean in the magnet change all the valves back to aurtomatic control N B Be aware that the flow rates do not vary linearly with the opening of the valves Also i
13. Barj mil1l13xdl2 33Bar mil s l2 8Ban mil 5 12 56Bar m 1 06 12 79Bar 300 13 5 250 iom 280 oe 270 i20 260 MICE SOL CRY CLTS OL AT 550 11 5 MICE SOL CRY PRE O1 RP 24r 110 MICE SOL CRY PRE 02 RP MICE SOL CRY PRE O3 RP 230 10 5 MICE SOL CRY PRE D4 RP 220 10 0 MICE SOL CRY PRE O5 RP 210 200 190 8 5 130 8 0 170 PO ER 4 4 5 UERSUM A Ig i 5 Hi 25 E 8 mF pu le ee pe T 140 e 2m 5 13012 gg 120 BE 110 5 0 100 Ur 4 5 a 4 0 M eee 70 l 60 3 0 30 40 20 30 1 5 20 1 0 10 e 0 5 4 12 0110 12 0210 12 0210 12 03 10 12 03 10 12 04 10 12 04 10 12 05 10 12 0510 12 06 10 12 06 10 12 07 10 12 07 10 12 08 10 12 08 10 12 09 10 12 09 10 12 10 10 12 10 10 12 11 10 12 11 10 12 12 10 12 12 10 12 13 10 12 13 10 12 14 10 12 14 10 E Main Time Axis GMT B B B B gI2256 280 42K m 4 62 12 55Bar mid 76 12 55Bari 1 09 3 95Bari 300 130 290 12 5 280 n 12 0 760 11 5 250 11 0 240 si 230 1n n Decav Solenoid User Manual MICE SOL CRY CLTS O1 RT MICE 50L CRY PRE 06 RF MICE 50L CRY PRE 07 RF MICE 50L CRY PRE 08 RF 5 1 Current 31 m H Wo L NN Ln cC Decay Solenoid User Manual mis25 280 42K mi 0 2A mps Wirz 3 mps 6 5 4 6 0 5 5 4 5 0 4 MICE SOL CRY CETS OLRT MICE SOL PSU OLT RIL MICE SOL PSU OT RIZ 45 4 0 3 5 4 Temperature K Main Range Axis
14. Decav Solenoid User Manual Decay Solenoid User Manual Decav Solenoid User Manual Contents 1 iritroduction and system QESGHPUON sauer andata kantanta i sett 2 MES eo 3 1 2 Compressor OVSIOLTI euenit eb upERC ERE Eo Abbo gua Se jiet boat RUE Eku SURE ES ROM PR ME 4 1 3 Decay Solenoid Crvostat sse nennnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnannnnnnnnnnnntnn 5 2 SEE EID tadk ineii abi inti de descend rema da tit it deles demi iet did 6 Al WAG OU ME P a ij f 6 2 1 1 Recovering the system after a power 7 2 2 Switch on the Linde Fridge control cabinet nnennnnnnnennnnnnnnnnnn 7 2 3 Switch on the Linde FridGe cccccccseeccseeeceeeeeeeeceeeecseeeeeeesueeseeeseeeseeeeaes 8 2 4 Switch on the Chiller sccnciencaccezscewasepeacasqeisaneacedscansqensienevadscessqeuseareseiiaeesactaeancs 8 2 5 Check the air conditioning is On ccccccceeccceeeccececeuceceecceueecueeceeessueeseeeseas 8 OM 9 CHECK 10 2 8 10 2 9 Visual inspection 10 2 10 Prepare the Decay Solenoid ss
15. FER BUFFER D2177 GHe2230 65 TO COLD80x ZUR COLDBOX FROM COLCBOX VON COLOBOX 1 3 Decay Solenoid Cryostat Yacuum System Return DS Pump 1 Pawg PSV WL Wao 1 0e 03 Mbar DS Turret Trans Line Puffer Overrange BOK 1 5e 06 Mbar 4 3e 03 Mbar Hwid id H20 ak Operating Operating on FS HAL MAN H19 EM M 125 Lmin 12 5 Limin G KO Hut cvi HC v31 HEYA T 254 53 100 An 100 i 27315 K 279 57 KE 10002 100 0 4 58 Bor ERE T Hw 281 88 KEEN 4 71 Bor Morth 535 Ba pr20 O i Ear Side 273 55 K TI IL gs Ee BHEHNHNEHNEHNEHENHENEHNEHNHNHNHEN P eee 8 8 ca 524 Bar pI21 a i qa 1 Cryostat ETA en JERATETI Control State a woz TMF 02 204 13 K 206 20 1 1 ENS D E Le 467 Bar prs oe PBE ee 475 Bar 4 53 Bar PIS3 888 ER f DS Pump 2 1 4e 06 mbar Operating SHIELD 2 SHIELD 3 SHIELD 4 SHIELD 5 N B Labels in yellow indicate sensor names in the Archiver Decav Solenoid User Manual 2 System Start up 2 1 Re boot the PC Switch on the Linde PC and log in with Username CNRS Password mice123 Open EPICS through the Start menu see Figure 1 The OPC IOC Shell will open see Figure 2 which should be left running in the background Recyde Bin 7 Accessories Fi Administrative Tools Explorer E Canon
16. P4500 series A InterVideo WinDVD f PDF Complete m Startup iP4200 z On scre m Survevor E 8 Internet Explorer A co Remote Assistance Easv Photo a Svmantec pcAnvwhere Windows Media Plaver M d Windows Movie Maker Ho F Microsoft SOAP Toolkit Version 3 Canon m Canon iP4200 Fi Canon iP4200 Manual Q Set Program Access and Defaults m Canon Utilities eo ae T CD LabelPrint Ff Microsoft SQL Server Ej Google Updater 2 Google Earth MICE Control System EPICS 8 Decay Solenoid Cryo IOC y A wow Sw Programs Favorites Windows XP Professional eut WinCCExplorer C Prog Yj WinCC bmp Paint 9 WinCC Runtime Figure 1 How to open EPICS Decay Solenoid Cryo IOC 15 xl RR OPCGC I_OCG SHELIL U3 5 3 1 ia MC i REOR RR dhLoadDatabase C dbd opcloc dba 8 08 iocShell registerRecordDeviceDriver pdbbase ast fab ied e fe OPCServer WinCC gt opcSetGroup cC e yr dbLoadRecords Ab TA A tt H MICE Control System Remote Monitoring of Linde Plant seeeeeex jf sexe DO NOT SHUTDOWN THIS APPLICATION HEEE E i tt iocInit gt Starting iocIn TIT BB6 55 13 5
17. anual 2 7 Valves check Valves HV3100 and HV3200 should be open These are located between the compressor and the coldbox as shown in Figure 9 and Figure 10 HV3200 Gauge indicating air Supply pressure Gauge indicating turbine cooling water supply flow HV3100 Figure 10 Position of HV3100 2 8 Check air supply The air supply must be on This is indicated by a reading of 6 bar on the gauge indicated in Figure 9 2 9 Visual inspection of turret Check for any obvious issues on the turret including the fan is operating and any loose connections Ca E Figure 11 Turret 10 Decav Solenoid User Manual 2 10 Helium buffer tank pressure Firstly ensure that the buffer tank has sufficient pressure for the cooldown The buffer pressure should be at least 6 5 bara 4 bara goes into the DS during filling and the Linde cuts out if p c 2bara If so close the valves to the refill pack of helium gas bottles to prevent filling the buffer tank while the svstem is cold and hence losing more Helium when the svstem warms up 2 11 Prepare the Decav Solenoid Open the control panel mimic for the Decay solenoid Cryo on Miceopipc 1 2 or 3 This is done by selecting the decay solenoid work area by clicking on the Decay Solenoid button indicated in Figure 12 A list of available applications as shown in Figure 13 is opened by clicking on the Controls Menu icon The Decay Solenoid Cryo mimic is opened by double clicki
18. button on the side of the rack for turning on power supply and ramping to 50A 2 Unlock the main breaker indicated in Figure 33 on the power supply and turn the unit on 3 Check the Set Values by pressing the Set Values button and adjusting as needed The normal operating set values are 875 5A and 6 5V N B The PSU currently stops ramping somewhere slightly below the value set so a set value of 875A will stop it ramping at 872A 4 Reset the quench detector in the rack adjacent to the magnet power supply Once reset all LEDs on the panel should be off SET VALUES On Off and Reset switch Mains breaker Figure 33 Power supply located at the east end of the north mezzanine 4 The power supply must now be prepared to be powered in the software using the MICE Decay Solenoid PSU mimic shown below 1 Reset each of the controls in the mimic 2 lurnon the three controls in the following order PSU EXT ILK Ramp Down PSU COOLER ILK Fast PSU ON On each of these controls when the ON button is selected the state will change from OFF to TIMING It is necessary to hit RESET on the power supply itself while the controls mimic reads TIMING otherwise the controls mimic will go back to OFF If the reset button is pushed in time the controls mimic will show ON The next control can then be switched on 24 Decav Solenoid User Manual MICE Solenoid Magnet PSU
19. e ok press the button next to COLDMODE in the MODE column indicated in Figure 21 5 Open the MICE Pressure Level Control window shown in Figure 23 by selecting the State Control button in the bottom right hand corner of the Decay Solenoid Cryo mimic Click on the Start Cool DN button in the MICE Pressure Level Control window A MICE Pressure Level Control mm MICE Decay Solenoid State Control PID COOL DOWN flow Control SET Stored Contribution Setpoint 5 00000 JEM Proportional 1 53000 Integral 0 05300 Differentia 0 00000 Error ETIN Scanning Output BEI MANUAL START COOL DN COOL DOWN PARR to SERIES OPERATE PRES OPERATE LEVEL PID Pressure Control SET Stored Contribution Setpoint 3 00000 Selected State Proportional 21 60000 Integral 0 27000 In State Differential 0 94000 tr ooo ERE out VAC lt 10 3nBar a pibus PID Level Control ki SET Stored Setpoint 85 00000 Proportional 1 53000 Integral Differential 0 00000 t scanning NEED Output ENSE EN I m eee NEC o BEEN ie Contribution PID Values Sheld Temp to Setpoint Decrement 3230 Lim Inital Val FL21 Limit Time Tle1L Diff Dec Value 60 00 2 0 10 0 10 mBar Time To Next Decrement Figure 23 MICE Decay Solenoid Cryo COLDBOX START PERMISSIVES FOR COLD MODE Warmup off DE Vacuum okay CW flow okay
20. em GHe2118 DN42 2110 Wa Em 2811 Q LKISUB Nv F2200 US zZ a S 5 borla N e Sv2200 AT CT R ug PEN 2240 e 2240 EVAKUIEREN EVACUTION KF16 u gt lt HV2298 DNI5 LL Rv2269 GHe200i DN25 DN25 220 9 UIM X LAUF RUECKMELDUNG Ame RUNNING SIGNAL UIZ N ISTOERUNG KOMPRESSOR COMPRESSOR FAILURE US N ISTART STOP SIGNAL START STOP SIGNAL 2120 Q B LK GHe2120 ON48 f LIH LSH 810 LC 52810 2810 b Lo112818 ON4 X HV2BIP 28106 DN4 Lo 12891 DN4 5281 z o e N o a EVACUATION KF16 EVAKUIEREN GHe2260 DNIS SS HV2142 15 borig amp 5 5V2140 gt II HV2130 GHe2130 DN48 S21110N40 A2140 Cc V 2811 Trocknung Ex DN32 Drying TA A S x IN A 21ea 2160 2162 GHe2180 DN40 Tu yas Boy z II 581 r 5 Gas puri taj measurement adsorber 5 Tief tenp Adsorber 6 B uo YN SS i e i c i H i D P I o 5 Ges perity mwassrement Cryogenic adsorber t Tief tanp Aser bar e B Do N RE SSX 3 5 0 384 I I x 2257 Qm Cv2150 GHe2145 ONIS DNIQ 2 68 ONIS GHe2158 ON28 15 bar g Sv2177 DNI 5 C GHe2198 DN32 2171 LK SUB e 5 Ri o e 21720 E PI ATM X HV2171 DNI5 HV2172 ON25 qf EVACUATION U EVAKUIEREN Ys A e rI PUF
21. ens This redirects the helium to flow in series through Coils 1 5 Coils 6 10 and then the J T valve to further cool and then fill the crvostat Warm up Instructions To warm up the svstem 1 2 Select the Warm Up state in the MICE Decay Solenoid State Control shown in Figure 23 In the Linde Fridge control system go to the Modes screen shown in Figure 26 Select any On buttons in reverse order to the cooldown to turn them to Off 19 Decav Solenoid User Manual 4 Powering the Decay Solenoid 4 1 General Considerations 1 The Decay Solenoid experts consider it safe to leave the Decay Solenoid powered overnight and or between runs as it is self protecting and problems are more likely to be experienced during current ramping than when the current is stable For additional safety it would be preferable to ramp the current down to 400 Amps when unattended as this is approximately half current i e quarter power and thus safer in the event of a power outage or quench 4 2 Preconditions 1 Method statement and risk assessment agreed by Hall Manager Principal Contractor and or MOM Authorisation to work obtained 2 Keys to decay solenoid power supply obtained from MICE Hall Manager Principal Contractor or MOM 3 The DSA must either be searched and locked or the area around magnet power supplies and magnets must be appropriately signed and fenced off 4 Confirm with the Decay Solenoid Expert
22. hand side of the window should be green 3 If the permissives are ok press the button in the MODE column next to Compressor on the visualisation indicated in Figure 21 The compressor will now start up A stable high and low pressure of 13 0 and 1 1 bar will be achieved These are indicate on the compressor mimic as indicated in Figure 22 Click this button to start the compressor Click this button to start the cooldown Figure 21 MODE screen 9 21 2010 10 57 13 AM CHILTONO6 Linde COMPRESSOR off Pressure readings 9 88 gt DIRE Figure 22 Pressure readings on compressor mimic 3 4 2 Starting the Cooldown 1 Wait at least 10 minutes until the compressor system has stabilized to a high and low pressure of 13 0 and 1 1 bar 2 Check the pressures in the DS cryostat which should be around 1 2bar if the pressures are abnormally high the fridge will not open CV3170 or CV3290 as the high pressure could damage the fridge High pressures can be released by opening 17 Decav Solenoid User Manual PV5510 using used to cool the current leads which will allow the safe release of Helium back into the buffer tank 3 Check the permissives for the coldmode visualisation by i Onthe MODE screen hover the mouse over Coldmode until a pen symbol appears Left click to open a new window as shown in Figure 24 li Check that all the permissives are ok they should all be green 4 lf the permissives ar
23. ill be necessary to reset all the interlocks in the PSU control window first and then reset the heater The heater will reset by default to manual mode this should be changed to automatic mode Switch on the Linde Fridge control cabinet Release emergency stop on front panel pull outwards Turn on mains breaker on front of the control panel Clear any alarms on the control cabinet by alternately pressing ACK and ENTER Make sure the control cabinet is set to be controlled by the PC using the Local remote control button indicated in Figure 4 The green light to the top left of the button indicates that the compressor is currently in remote control Decav Solenoid User Manual Local remote control Figure 4 Compressor control panel Switch on the Linde Fridge Turn on the 3 phase power supply Release the emergency stop on the front panel rotate and pull outwards Check the gate valves on air supply have come on Check that the vacuum pump on the insulating vacuum behind the fridge has come on Switch on the Chiller The water cooler is located to the right behind the compressor It is turned on by switching on the power point located on the wall to the right and turning the switch indicated in Figure 5 on The white light above the switch should come on and the display will show the water temperature which should be in the region 16 20 C This is indicated by the line of LEDs on the gauge indicated in Figu
24. n C c3 Ln c oOo OF D 140 130 120 110 100 Main Range Axis mn KI a E bk LU A amp A in oO vC O O vc ovx uu 12 01 10 12 02 10 12 02 10 12 03 10 12 03 10 12 04 10 12 04 10 12 05 10 12 05 10 12 06 10 12 06 10 12 07 10 12 07 10 12 06 10 12 06 10 12 09 10 12 09 10 12 10 10 12 10 10 12 11 10 12 11 10 12 12 10 12120 12 13 10 12 13 10 12 14 10 12 14 10 E Main Time Axis GMT B m E 26 Decav Solenoid User Manual Main Range Axis 300 295 mi2 26 280 42K mid0 09 280 12K i52 60 2856 56K MEE CL 1 MICE SOL CRY CETS QZRT MICE SOL CRYT CETS QS RT 12 01 10 12 02 10 12 02 10 12 03 10 12 03 10 12 04 10 12 04 10 12 05 10 12 05 10 1206 10 12 06 10 12 07 10 12 07 10 12 08 10 12 06 10 12 09 10 12 09 10 12 10 10 12 10 10 12 11 10 12 11 10 12 12 10 12 12 10 12 13 10 12 13 10 12 14 10 12 14 10 9 2 Level and Mass Flow Rates Main Time Axis GMT 2 Decav Solenoid User Manual MEMO Pal 5250 5000 4750 4500 4250 4000 3750 3500 3250 S000 275 2500 2250 2000 1750 1500 1250 1000 Fo 250 250 Temperature K 300 290 200 2 0 260 250 240 230 220 210 200 150 15 170 160 150 140 130 120 110 100 B FQ B S 40 30 20 10 26 260 42K mi 0 0 81 175 m r 0 1856 10 00mbBar oo B I5 LA Ln
25. ng on Cryo in the applications menu To prepare the Decay solenoid for operation 1 Reset display by right clicking on objects and selecting Reset 2 Switch first the backing pumps and then the turbo pumps on 3 Open the valves between the decay solenoid vacuum and the pumps when then level of vacuum on either side of the valves is of a similar level Reset the Linde Quench Inhibit Switch the Air on otherwise the valves cannot operate Check that the magnet is in Safe Mode in the State Control OS 72 Tiered App Launcher UI lt miceecserv gt BERA Controls Menu QMagnet Power Supplies icon Decay Solenoid d amp Decay Solenoid button Status Summary Run Monitor Linde Cold Box Linde Compressor d Target Beam Profile Monitors QDATE d History QIOC Temperatures dS Utilities QStrip Tool QAlarm Handler d Configuration Database E e Figure 12 Desktop of miceopipc1 miceopipc2 or miceopipc3 computers 11 Figure 13 Applications menu Decav Solenoid User Manual 3 Cooldown 3 1 Cooldown Process Regenerate the Perform cryogenic system absorber clean up Isthe system clean Cool down the fridge Cool down the magnet FINISH The system cleanliness is measured by the gas analyser The gas analyser can be read via a webcam online which can be opened through the Application Launcher menu The gas analyser is shown by Camera 6 and should give a reading of less than 10p
26. pm 3 2 Regenerating the Cryogenic Absorber The impurities removed from the helium flow by the absorber build up on the activated carbon absorber surface In order to reuse the absorber it should be regenerated to remove impurities by heating to room temperature This is done by inserting an electrical heater into the well 12 Decav Solenoid User Manual Figure 14 Crvogenic absorber To regenerate the crvogenic absorber Ensure valves V1 V2 V3 and V5 are closed labelled on the absorber 2 Open the blowdown valve V5 to a vacuum pump to depressurise the unit and leave V5 open 3 Insert into the well within the absorber through the hole in the fill plug as shown in Figure 15 Figure 15 Crvogenic absorber with heater inserted into well 4 Plug the power cord for the control box into a power point on the wall 5 Set the timer on the control box for two hours N B The heater should not be left on longer than two hours 6 After two hours remove the heater and replace it in its control box 13 Decav Solenoid User Manual Once the absorber is clean disconnect the vacuum pump If the absorber is allowed to warm up during the clean up process e g if itis left overnight and the clean up continued the following dav the absorber should be pumped out before being reused 3 3 System Clean up The system is clean when both the H2O and N2 content are less than 10vpm parts per million relative to
27. re 9 on the coldbox being lit Power switch E Figure 5 Cooling water supply 2 5 Checkthe air conditioning is on The air conditioning must be on in the hall turn it on using PRG ENTER ENTER The compressor emit 85kW of heats so if the air conditioning is not on the hall will overheat in 2 hours The Compressor itself can work in up to 40 however the DS vacuum pumps and the DS C amp M rack will fail at a hall temperature of 35 as measured at the East wall this has happened in the past The MOM notes refer to maintaining the hall to a temperature below 30 C Decav Solenoid User Manual Switch on controls rack Turn the isolators on Master first at the back of the control rack From the front switch on the computer Switch the signal conditioning on Check the vacuum gauges are on Check the heater control switch for the Helium Crvostat is set to level 2 and that neighbouring switch is set to FERN remote control as shown in Figure 6 Oc Heater control switch should be set to level 2 Set switch to FERN to allow remote control Figure 6 Heater control for Helium Crvostat Computer Signal conditioning Vacuum gauges Figure 7 DS Controls rack on the north mezzanine This heater control setting is changing the power level in the heater The on off setting of the heater is controlled through the EPICS control svstem on a PID loop 9 Decav Solenoid User M
28. t will not be possible to open PV 5510 manually at this point to clean the gas in that line as the fridge will not allow it to be opened unless it considers it to be ready 7 Once the gas is clean close the valves allowing flow through the absorber HV2153 valve followed by HV2253 8 Close the valves allowing flow through the gas analyser Close HV21523 first and allow the pressure in the gas analyser to drop to zero before closing HV2252 3 4 Fridge and Magnet Cooldown Method statement and risk assessment must be agreed by Hall Manager and or MOM and prior to starting the cooldown 3 4 1 Starting the Compressor 1 Ensure the Compressor is in remote control this is changed by pressing the Remote Control button Ex1 on the front of the compressor It is in remote control when the green light is on 2 Check the start permissives of the compressor system on the visualisation in the MLCR by i On the MODE screen hover the mouse over Compressor until a pen symbol appears then left click A new window should open as shown in Figure 20 COMPRESSOR START PERMISSIVES Tu inlet valve closed Tu inlet valve closed Compressor re start time passed Remaining time for re start Buffer pressure gt bara Low pressure lt bara High pressure gt bara No shutdown xl Figure 20 Compressor start permissives window 16 Decav Solenoid User Manual li Check that all the permissives are ok all the boxes down the right
29. the system safe 25 Typical Cooldgowni Example 12 2010 isset o nassa dei eta bina ta 26 Sol TEMCO ee amen 26 9 2 Level and Mass Flow Rates sse nnnnnnnnnnnnnnnnnnnnnnnnani raza 27 E E RT 29 Sd 31 52 COMMON VV CS ii 32 Mile l pi VUNG ce ecctest Do Em 34 6 1 Opening the compressor to air for 34 1 Introduction and svstem description 1 1 Coldbox Cpe US rr H H 1 23918 PSone COOLING WATER KUEHLWASSER Test cap for acceptance 85 Bg EM m M nt nz a 1 z i renes GHe3I84 DN32 qz U GHe 3284 ONES N i b 4 E i 7 L pes synas i 1 15 berig DNIB Tevanas Tevaizs NT C3 t i ED ONIS GHe3125 ONIS GHe3135 1 ONIB l E3120 ee He 3 be 122 Fyn22 y 945188 DNG iB oux Ghe N24 ONS ONIS GD l PV3I24 FALZA 13218 ONIS Diet DNS Fvazie pyazie DIS ons 932 svazel DN22 M gt am 15 berig sseeg Q ue ub GHesBAB s DNIB PVSBJO DNIB DH KFIE ONIS 1 2 Compressor Syst
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