 Monday, February 13, 2023, 09:57, David Wang, ITW, Maintenance, , , ITW/ITE primary vacuum back up lines and BVs leak check in target pit.
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In past two weeks, ITW/ ITE primary vacuum back up lines and BVs in ITW/ITE pit have been leak checked. ITW BV1 and BV2 on back up line side were leak. They are replaced with old leak free BVs. ITE TP2 NW25 SST flexible line right after pump were leak . It is replaced with new NW25 SST flexible line. Two leak were found on ITW side KF 50 O-rings connected to NW 50 SST flexible coupling. They were replaced with new KF50 o-rings. After job, both stations primary back up lines in pit were leak checked . They are good. |
Monday, May 29, 2023, 12:52, Frank Song, ITW, Standard Operation, TM2, TiC#6, Module Connection 
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TM2 with TiC#6 was connected in ITW (FEBIAD), turbo pumps were started successfully. |
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Tuesday, May 30, 2023, 12:30, Frank Song, ITW, Standard Operation, TM2, TiC#6, gas lines pump out in ITW Faraday Cage
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Gas lines pumped down at electric room for TM2 at ITW is done, leak rate 0.0e -8 <1.0e -3 T P pressure |
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Tuesday, May 30, 2023, 14:15, David Wang, ITW, Standard Operation, , , ITW water signal interlock check is done.
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ITW water signal interlock check is done. All ITW water signals including HS, EE, Coil , Ta, Tu, MSP, C-window, HVC1, HVC2, 2A-dump, 2A -shielding plug, 2A-tank, 2A-window, and 2A-collimator are checked. All water signal interlock work fine. |
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Tuesday, June 06, 2023, 17:36, Carla Babcock, ITW, Standard Operation, TM2, TiC#6, Module conditioning
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Conditioned TM2 up to 48kV in ITW. Some sparks and current is not very stable. Drawing about 178uA at 48kV. |
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Tuesday, August 08, 2023, 12:59, David Wang, ITW, Standard Operation, TM2, SiC #6, TM2 SiC#6 dhas been disconnected in ITW
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TM2 SiC#6 has been disconnected in ITW. See check list |
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Tuesday, August 15, 2023, 13:58, Frank Song, ITW, Standard Operation, TM2, Nb#10, Module Connection
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TM2 with new target Nb#10 was moved to ITW from TCS and re-connected in pit. TPs are running at their full speed. |
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Friday, August 25, 2023, 07:22, Frank Song, ITW, Repair, TM2, Nb#10, module disconnection
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TM2 with target Nb#10 was disconnected in ITW yesterday for beam production issue investigation. |
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Tuesday, August 29, 2023, 09:07, Frank Song, ITW, Repair, TM2, Nb#11, electrical check
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TM2 with new target Nb#11 replaced has been electric checked one more time in ITW. |
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Tuesday, August 29, 2023, 09:28, Frank Song, ITW, Repair, TM2, Nb#11, Module Connection
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Module was connected yesterday and all turbo pumps are running at their top speed. |
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Tuesday, October 03, 2023, 07:56, Frank Song, ITW, Standard Operation, TM2, Nb#11, module disconnection
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TM2 with target Nb#11 has been disconneted in ITW. The HS line was purged with Nitrogen in station. |
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Thursday, October 05, 2023, 13:50, Frank Song, ITW, Standard Operation, TM2, Ta#66, Module Connection
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TM2 with new target Ta#66 was connected in ITW. |
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Wednesday, January 03, 2024, 13:55, David Wang, ITW, Standard Operation, TM2, Ta#66, Disconnect TM2 in ITW.
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TM2 has been disconnected in ITW. All water lines are nitrogen purged. Filled 60 psi argon to all Tm2 water lines for module storage in winter shut down. |
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Wednesday, January 03, 2024, 14:03, David Wang, ITW, Standard Operation, TM2, Ta#66, ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test.
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ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test are done today. No major concern. see attachment for small air to vacuum leak we found. TM2 water lines helium pressure test is fine. HS and window line leak rate are 1.4Xe-8 atm.cc/sec. all other water lines are below 3.0XE-9atm.cc/sec. |
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Thursday, January 11, 2024, 13:57, David Wang, ITW, Standard Operation, , , ITW entrance module has been disconnect.
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ITW entrance module has been disconnected per document190510. It will be moved to SHC for diagnostic group tomorrow. |
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Monday, January 22, 2024, 09:50, David Wang, ITW, Standard Operation, , , ITW entrance module has been moved from SHC to ITW.
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ITW entrance module has been moved from SHC to ITW. A slightly bump on module shielding block bottom side corner to tank vessel side when lowed module into tank. No big concern on this slight bumping. Otherwise the move is perfect.
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Monday, January 22, 2024, 09:56, David Wang, ITW, Standard Operation, , , Entrance module has been connected in ITW pit.
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Entrance module has been connected in ITW pit per document 190510 " entrance module disconnection and removal procedure".
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Tuesday, February 06, 2024, 13:28, David Wang, ITW, Maintenance, , , ITW exit 1 module has been disconnected and reconnected for o ring replacement
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ITW exit 1 module was disconnected for Exit module flange o -ring replacement yesterday. After oring replacement, the module has been reconnected. |
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Tuesday, February 06, 2024, 13:36, David Wang, ITW, Maintenance, , , ITW exit 1 module tank flange o ring has been replaced.
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ITW exit 1 module tank flange o ring has been replaced. the old o r-ing was completely flat in slot without elastic property. tank flange, module flange, and o ring slot were clean by acetone and canister vacuumed. Raised up module 3 feet and pulled new o-ring over module top so new o ring could be installed without moving module out. after new o ring installation, craned down module to flange and raised up module 2 feet again to confirm the o ring is properly sit in slot. |
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Monday, February 12, 2024, 18:44, Carla Babcock, ITW, Maintenance, , , ITW annual HV testing
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ITW was set up for HV testing - water is running and at a high resistivity due to injected N. Einzel lens is attached to ground. Everything else is as normal. The module plug is in so no vacuum bypasses were needed. Very easy to ramp to 60kV. Sat at 60 for about 1.5hrs with maybe 1 spark (hard to say from the strip tool data). Current draw was about 176uA. Data dumped as isac/data/ITW_HVtesting_shutdown2024 |
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