 Wednesday, September 25, 2024, 07:25, David Wang, Cooling, Maintenance, , , HALCW O2 level sensor maintenance.
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HALCW O2 level sensor annual maintenance is done. sensor membrane has been changed and electrolyte has been refilled. gauge is calibrated. It works normal
after the job. |
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Thursday, June 30, 2011, 16:04, Pierre Bricault, Conditioning Station, Repair, TM1, , TM1 status
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Friday June 24 2011
The target module has been moved to the Conditioning Station (CS)
Pumping overnight |
Thursday, July 21, 2011, 17:39, Bevan Moss, Conditioning Station, Repair, TM1, , TM1 Ground Electrode, Thermocouple line, Stem, panel, repairs 
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Over the period of July 20-21st TM1 had several repairs completed and tested. The easiest of the repairs was the installation
of a gasket and a blank off. The next repair was to replace the 2 oring on the side panels that were removed for inspection and repair. The instrument
panel oring was replaced again and the previous one measured. Both were found to have the correct diameter of 0.131 inches for the seal groove. When attempting |
 Friday, July 22, 2011, 10:30, Bevan Moss, Conditioning Station, Repair, TM1, , TM1 Ground Electrode, Thermocouple line, Stem, panel, repairs
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Bevan Moss wrote:
Over the period of July 20-21st TM1 had several repairs completed and |
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Thursday, July 28, 2011, 14:07, Travis Cave, Conditioning Station, Standard Operation, TM1, Ta#37, Module move
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| Tm#1 with Ta#37 moved from the south hot cell to the conditioning station. Move went well. |
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Tuesday, August 02, 2011, 09:41, Pierre Bricault, Conditioning Station, Repair, TM1, ITW-TM1-Ta#37-LP-SIS, Test high voltage on TM1
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TM1 has received the Ta#37-LP and has been pumping since thursday. This morning the pressure gauges read, IMG1: 1.6x10^-6 T and IG1: 7.4x10^-7
T.
The high voltage power supply has been connected to all high voltage feedthroughs and the voltage raise to 42 kV. |
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Thursday, August 18, 2011, 16:07, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx#2, Pump Down
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Pump down in the conditioning station started at ~2:40 for rough down. The turbo pumps were turned on at ~3:30 and at 3:52 the pressures were reading
as follows:
IMG in the containment box 9.2 x 10^-5 T |
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Friday, August 19, 2011, 14:52, Bevan Moss, Conditioning Station, Repair, TM1, UCx#2, Leak Check
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A leak check was performed on the module when it was in the conditioning station today. There were no external leaks
found. When the coolant lines were check a small leak was found in the heat shield circuit. Base leak rate was 6.7 x 10^-9 atm cc /sec and rose to 4.1
x 10^-9 atm cc /sec quickly (~3 seconds) and remained there for the 2 minute test. The remaining lines |
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Wednesday, August 24, 2011, 17:11, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx#2, Leak Check, HV conditioning and Module Move
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Today a leak check on TM1's external seals and the heat shield line was completed by David Wang. After 16 hours of the turbo pumps running on the conditioning
station stations pressures were 3.6 x 10^-6 T, 1.2 x 10^-5 T, and 1.8 x 10^-6 T for the containment box, secondary vacuum, and service cap respectively.
This is a significantly quicker pump down after the cross with small turbo pump was installed on the vacuum vessel. The base pressure of the leak testing |
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Tuesday, October 25, 2011, 16:57, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Turbo Pump 1 issues
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Roughing on TM1 started at ~15:00 today by ~16:30 the module had reached a pressure of ~200 mTorr and the turbo pumps were turned on. TP1 failed to achieve
normal operation and we running at approximately 4KRPM and 50W with 6.1 A of current draw. TP2 was able to achieve normal operation. The controller for
TP1 was then powered off and back on but that failed to resolve the issue. The controllers for TP1 & 2 were then switched at which point TP1 again |
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Friday, October 28, 2011, 08:24, Travis Cave, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, Module move
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| TM#4 moved from conditioning station to south hot cell. For further leak checking. |
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Friday, October 28, 2011, 14:29, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Leak Check on October 27/10/2011
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A leak check was performed on the module on October 27/10/2011 by David Wang and was reported to Bevan Moss but it never made it into the Elog system.
This entry is to summarize the results of that testing. All circuits were pressurized to 80 psi with helium and every line except the tube heater (+) showed
no or small responses as experienced before. The tube heater line had a slightly larger response under the conditions summarized below: |
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Tuesday, November 01, 2011, 11:50, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 leak test on conditioning station
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I did a leak check again on TM4 today. This time, the leak detector pump to the bottom on both base pressure(0.0xE-4 torr) and base leak rate(0.0xE-9
atm.cc/sec). All high vacuum gauges on TM4 and conditioning station at -6torr range.IG1 is 3.3-6torr,PNG5(top of service cap)is 6.5-6 torr, and the PNG4(bottom
of the vessel )is 8.7-6torr. For air to vacuum leak checking, I checked the panel we moved last week on service cap by spraying helium around the panel. |
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Wednesday, November 02, 2011, 13:12, Bevan Moss, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, High Voltage (HV) testing
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The silicon carbide targets voltage was raised to 42 kV today before continuous current draw was observed. It took roughly 10 minutes to raise
the module to this voltage with only the occasional spark. The ION gauge reading was 2.0 x 10^-6 T, The service cap IMG 3.6 x 10^-6 T, and the secondary
vacuum was 4.5 x 10^-6 T. Setup check and conditioning was performed by Pierre. |
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Friday, November 04, 2011, 11:12, Travis Cave, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, Module move
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| TM#4 with SiC#26 HP move from the conditioning station to the East Target Station, move went well. |
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Tuesday, November 15, 2011, 13:08, Travis Cave, Conditioning Station, Standard Operation, TM1, , Move ot TM#1
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| TM#1 has been moved from the south hot cell to the conditioning station. Move went well. |
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Thursday, November 17, 2011, 11:52, Travis Cave, Conditioning Station, Standard Operation, TM1, no target, Module move
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| TM#1 moved from the conditioning station to the south hot cell. Move went well. |
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Friday, November 18, 2011, 11:09, Travis Cave, Conditioning Station, Standard Operation, TM1, UCx#3, Module move
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| TM#1 with UCx#3 has been moved from the south hot cell to the conditioning station. Move went well. |
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Friday, November 18, 2011, 16:29, Bevan Moss, Conditioning Station, Standard Operation, TM1, N/A, High Voltage (HV) testing
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TM1 was high voltage tested without a target on November 16, 2011 with Don Jackson, Pierre Bricault, and Bevan Moss. The module was able to hold
up to 25 kV but between that and 32 kV there was lots of discharge which could be measured in the vacuum. See the attached plot for the voltage current
and sparks. |
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Monday, November 21, 2011, 13:49, David Wang, Conditioning Station, Standard Operation, TM1, , TM1 full leak check in conditioning station
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TM1 full leak check in conditioning station has been fulfilled this morning.Both air to vacuum leak check and waterlines helium 80psi pressure test are
fine.The result:
Air to vacuum helium spray:base leak rate on leak detector 1.6x E-9 atm .cc/sec.base pressure0.0xE-4 torr. sprayed helium around all flanges, turbo |
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