 Tuesday, November 05, 2013, 10:37, chad fisher, South Hot-Cell, Repair, TM2, , Thermocouple wire removal
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The old thermocouple wire has been sucessfully removed from the module.
Thanks Bevan, Travis and David. |
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Wednesday, November 06, 2013, 10:41, David Wang, South Hot-Cell, Repair, TM2, , Installed 2 turbopumps on TM2
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| Bevan and I installed 2 turbo pumps on TM2. The o- ring flanges on TM2 had been cleaned before the installation. |
Tuesday, November 12, 2013, 10:59, Bevan Moss, South Hot-Cell, Standard Operation, TM2, , Electrical Test 
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Don Jackson and Myself completed started an electrical test on TM2. All lines passed the with OL to ground. When testing in between the lines individually
there were several lines that read other than OL. It was decided to abandon the testing as there were too many "failures". The results are attached.
The testing will be repeated in the conditioning station with vacuum. It is not expected that this will change anything as during a quick visual inspection |
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Tuesday, November 12, 2013, 12:43, Bevan Moss, Conditioning Station, Standard Operation, TM2, , TM2 moved from SHC to TCS
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TM2 was moved by myself and David from the SHC to the TCS. Move went well. Curiously the fields on the module were measured higher than the previous
measurement (now ~5.8mSv/hour) . |
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Tuesday, November 12, 2013, 14:31, Bevan Moss, Conditioning Station, Standard Operation, TM2, , Turbo pumps started
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| The turbo pumps have been started on TM2 and the conditioning station. |
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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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Thursday, November 14, 2013, 08:08, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Blank off and jig removal
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Firday, November 8 all water blocks (excluding I and K) were blanked off and vacuum leak checked. No responses were found. (First Picture)
I and K could not be blanked off without removal of the water block jig. Also, I dropped one of the blank offs onto the table, so one line could
not be blanked off until a new clean blank off was inserted into the cell. In addition, there was still reminace of a bolt in block Ias it aslo could not |
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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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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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Tuesday, February 04, 2014, 08:04, David Wang, South Hot-Cell, Repair, TM2, , Leak check TM2 tube heater (+) water line.
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Chad and I leak checked TM2 tube heater(+) water line yesterday afternoon. The water line was difficult to pump down on base leak rate, but LD
base pressure was fine . The base pressure on leak detector was pumped to 0.0XE-4 torr quickly. The base leak rate only could be pumped to
4.5 xE-8 atm.cc/sec after 1 hour waiting time. All vacuum connections to leak detector in the target hall were leak checked and they were good. Chad |
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Tuesday, February 04, 2014, 09:42, David Wang, South Hot-Cell, Repair, TM2, , pressure test on TM2 tube heater +(D) water line. 10x
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Chad and I did a pressure test on TM2 tube Heater+(D) water line.I pressurized the D line with shop air from quick connectors(both ends) on service cap.chad
applied bubble soap onto the D water block in SHC. The test started from 5psi,and increased 5psi each time to 40 psi. From 5 to 35 psi, no bubble has been
found on water block. At 40 psi , bubble appeared from blind blank off seal , but not from soldering joints. Since the o-ring seal for the blank off is |
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Wednesday, February 05, 2014, 14:05, David Wang, South Hot-Cell, Repair, TM2, , Leak check TM2 tube heater (+) water line from inside service cap in TH.
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Bevan and I did a leak check on TM2 tube heater+ from inside service cap in TH. The leak detector base leak rate 0.0xE-9 atm.cc/sec, base pressure
0.0xE-4totrr. One of side panel on service cap was opened. Bevan sprayed the helium to the "D" line inside the blue insulator.The helium flow
was checked , and he sprayed twice. No response has been found on leak detector. See attachment pictures |
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Friday, February 07, 2014, 10:29, chad fisher, South Hot-Cell, Repair, TM2, , TM2 C.B. and circuit D
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| Containment box has been removed and the blank off from circuit D has been removed for inspection of both the blank off and water block sealing surface. |
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