 Wednesday, November 13, 2013, 10:01, David Wang, Conditioning Station, Repair, TM2, , TM2 leak check at conditioning station 
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I leak checked TM2 at conditioning station this morning. All air to vacuum seals on the top of the module are good. All water lines are pressured with
60 psi helium for minutes each. One of the tube heater + water line( 2lines for tube heater + for supply and return) has a huge response on 60 psi helium
pressurizing. The leak rate went from 6.0xE-9atm.cc/sec to maximum leak rate in 5 seconds and I saw a pressure increasing either. when I pressurize the |
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Friday, November 15, 2013, 16:48, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Testing
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High voltage testing was started on TM2 with no source tray today. The maximum stable for 1 minute voltage reached was 47.5kV but the module is
still conditioning. With every step up in voltage the current goes up a large amount and slowly bleeds down. Large sparks disrupts the connection of the
CANBUS to the PS which is irritating but the module can be brought up to the equivalent voltage in less than 30 seconds. Attached is a screen shot of most |
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Monday, November 18, 2013, 11:54, Bevan Moss, Conditioning Station, Repair, TM2, , Fault on TCS Chill
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This morning when I went to start HV conditioning CP2 and CP3 both had faults and the temperature of the water was ~27C. I reset the compressors
by flipping the system reset switch. This cleared the fault and allowed the compressors to come one. To the best of my knowledge these faults happen as
a result of compressor fluid pressure too low or high and temperature too low or high and lack of flow. The system cannot determine which one it was that |
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Monday, November 18, 2013, 16:42, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Testing
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The Glory of TM2 continues 100V at a time. Today I brought the module to 46kV and left it there for 1 hour. During this time there was only 1 spark.
I then continues at up to 53kV. At this voltage the canbus continues to be temperamental when the module sparks. The module is still conditioning and I
will continue more tomorrow. Attached is the dumped data and a screen shot of the conditioning from 46kV to 53kV. |
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Monday, November 18, 2013, 16:44, Bevan Moss, Conditioning Station, Standard Operation, , , Testing of cooling package
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| I have tested all of the compressors for TCS. All are operational and cycled as they should. |
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Tuesday, November 19, 2013, 16:55, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV conditioning
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HV conditioning of TM2 continued today. At ~53.5kV the module started to spark externally to the HV cover. This is the first time the cover has
been tested to this high of a voltage due to the limitations of the modules. As such for the conditioning station to achieve 60kV while keeping the target
hall open of personnel the cover and cage will need to be modified. To continue with HV testing of TM2 the cover was removed and the target hall locked |
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Wednesday, November 20, 2013, 13:52, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV testing of TM2
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HV testing without the cover continued today. With the EINZEL lens at 30kV the target module was able to achieve 58.7kV. At this voltage any spark
was reeking havoc on the electronics of the TCS. Vacuum gauges signals were occasionally lost, the thermocouple reading would occasionally be lost, turbo
pump would turn off. All of these events caused the interlocks to trip resulting in the power supplies to be turned off. As a result I bypassed majority |
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Tuesday, December 03, 2013, 14:14, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV conditioning
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It was attempted to HV condition TM2 to 55kV and leave it operating there for an hour to demonstrate stability. Unfortunately at 52.65kV a spark
destroyed the canbus controller. This controller had shown issues in the past but seemed to magically fixed itself. I will contact Hubert for another card.
Attached is is a screen shot of the stip tools. |
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Friday, December 06, 2013, 15:09, Bevan Moss, Conditioning Station, Standard Operation, TM2, , TM2 no source tray 55kV 1 hour
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Today 55kV was applied to TM2 and held for over 1 hour with the EINZEL at 27.5kV. There were 2 sparks and the current was unstable at this voltage but
this test should be considered a success. Once again while bringing the voltage up the canbus continued to be a problem. After successfully passing the
test I continued to raise the BIAS and EINZEL. A spark at 57kV tripped a controller for the vacuum and the canbus. As stated before I believe the module |
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Thursday, December 12, 2013, 11:14, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Chase Electrical Test
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While under vacuum Travis and I completed diagnostics of the HV chase. Majority of the lines showed OL at 1kV but there were the following "failures"
A to P @ 250V 716kOhm
A to Q @ 1kV 25.18MOhm |
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Thursday, January 30, 2014, 13:46, Travis Cave, Conditioning Station, Standard Operation, TM2, no target, module move
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| TM#2 has been moved from the conditioning station to the south hot cell. |
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Monday, February 17, 2014, 09:32, David Wang, Conditioning Station, Repair, TM2, , helium pressure test on TM2 tube heater +(D) water line. 6x
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I did the helium pressure test on Tube heater+ line this morning. The vacuum on CS and TM2 are very good. The base lake rate on leak detector was 1.7xE-7
atm.cc/sec. Base pressure was 0.0xE-4torr. I applied helium to the "D"line .The test started from 30psi up to 80psi on both side "D"
line.The base leak rate slightly changed to 1.9xE-7 atm.cc/sec during the test,but not base pressure. At this base leak rate level, No obvious leak had |
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Tuesday, February 18, 2014, 11:26, David Wang, Conditioning Station, Repair, TM2, , I stopped turbo pumps and disconnected vacuum system on TM 2 and CS
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| I stopped turbo pumps and disconnected vacuum system on TM2 and CS. The TM2 will be moved to SHC for C seal installation on "D" water block. |
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Thursday, February 20, 2014, 09:45, Travis Cave, Conditioning Station, Standard Operation, TM2, no target, module move
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| TM#2 has been moved from the conditioning station to the south hot cell. |
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Tuesday, February 25, 2014, 10:00, David Wang, Conditioning Station, Repair, TM2, , helium pressure test on TM2 tube heater (+) water line with blank off(C-seal) installed on WB. 10x
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I did the helium pressure test on TM2 tube heater (+) water line with blank off(C-seal) installed on water block at CS.The leak
detector was hooked directly to the top of the module this time. So base leak rate and base pressure were at the bottom scale on LD. 30 -80 psi helium
was applied to the D lines(both side) with10 psi increasing each time. There is no any tiny response hasbeen found during the test. The lines |
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Wednesday, March 05, 2014, 10:07, Travis Cave, Conditioning Station, Standard Operation, TM2, no target, module move
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TM#2 with no target or source tray has been moved from the conditioning station to the north east silo. TM#1 with no target has been moved into the conditioning
station. |
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Thursday, March 06, 2014, 06:28, David Wang, Conditioning Station, Maintenance, TM1, , TM1 had been moved from silo to CS
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TM1 has been successfully moved from silo to CS. The CS vacuum system is connected to TM1. Turbo pumps on TM1 and CS have been started yesterday
afternoon . The starting of TM1 turbos was easy. The pumping down over night is good so far. |
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Thursday, March 06, 2014, 12:59, David Wang, Conditioning Station, Maintenance, TM1, , Restart TM1 and CS TPs
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| Restarted TM1 and CS turbo pumps after the power off. Everything is fine . |
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Thursday, March 06, 2014, 14:12, David Wang, Conditioning Station, Standard Operation, TM1, , TM1 air to vacuum and water lines leak check at CS. 8x
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TM1 air to vacuum and water lines leak check at CS are finished this afternoon. The leak detector is hooked directly to TM1 service cap so the
base LR at LD is 0.0xE-9 atm.cc/sec. I sprayed helium to all air to vacuum seal on the service cap, also applied 70 psi to all water lines(except HS) for
2 minutes each. There is no any tiny response had been found on LD. So All TM1 water lines(except HS) and air to vacuum seals are leak free. The HS circuit |
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Thursday, March 20, 2014, 08:19, Travis Cave, Conditioning Station, Standard Operation, TM1, no target, module move
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| TM#1 with no target moved from the conditioning station to north west silo. |
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