 Wednesday, January 25, 2023, 06:52, David Wang, ITE, Standard Operation, TM4, UCx#41, ITE primary and secondary vacuum vessel air to vacuum seals leak check. 
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ITE primary and secondary vacuum vessel air to vacuum seals leak check was done this week. One leak has been found on IG1S feed through to entrance module
surface seal. It explains what we saw on ITE IG1S readings change(from low E-7 torr to 1Xe-6 torr) on December 22, 2022. This leak seal will be replaced
soon. |
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Wednesday, March 27, 2024, 09:52, David Wang, ITE, Standard Operation, , , ITE entrance module top and module flange o-ing to tank have been leak checked.
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| ITE entrance module top and module flange o-ing to tank have been leak checked. no leak at 0.0xe-9 atm.cc/sec. things are double checked. |
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Monday, March 25, 2024, 10:55, David Wang, ITE, Standard Operation, , , ITE entrance module has been reconnected in ITE pit.
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| ITE entrance module has been reconnected in ITE pit per document 190510. |
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Monday, March 25, 2024, 10:53, David Wang, ITE, Repair, , , ITE entrance module has been moved from TCS to ITE.
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| ITE entrance module has been moved from TCS to ITE. The move is smooth. |
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Thursday, March 14, 2024, 14:54, David Wang, ITE, Maintenance, , , ITE entrance module has been moved from ITE pit to TCS.
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ITE entrance module has been moved from ITE pit to TCS. The move is smooth.ITE entrance module top tank flange and o ring slot are cleaned, and old o
ring are replaced. |
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Friday, February 23, 2024, 06:36, David Wang, ITE, Maintenance, , , ITE entrance module has been disconnected.
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| ITE entrance module has been disconnected per document 190510. Its a preparation job for next month module moving out to SHC. |
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Wednesday, May 07, 2014, 10:08, David Wang, ITE, Repair, TM3, , ITE entrance module flange seal had been replaced. 7x
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ITE entrance module flange seal had been replaced yesterday.The flange and the seal groove were cleaned with Acetone before the new seal is installed.
See pictures |
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Tuesday, March 07, 2017, 14:41, David Wang, ITE, Maintenance, , , ITE dump plug water circuit is closed for ITE IG1S small surge.
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It is closed @ 2:35PM by closing supply side valve first , the return side valve of ITE dump plug .
Opened ITE dump plug circuit valves @4:28PM. ITE IG1S still at 1XE-6. No change before and after of circuit closing and reopeneing. |
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Monday, March 27, 2017, 06:33, David Wang, ITE, Standard Operation, , , ITE clean up
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| ITE clean up is done. HV cage inside is wiped. |
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Tuesday, January 02, 2018, 11:28, David Wang, ITE, Standard Operation, TM4, , ITE annual water interlock check.
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| Eric and I finished ITE annual water interlock check. Everything works properly. |
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Friday, February 15, 2019, 12:05, David Wang, ITE, Maintenance, TM4, , ITE annual vacuum leak check.
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Helium pressure test on all water lines: 70psi , 3 minutes. HS has a quick response to 9Xe-9atm.cc/sec for 20 seconds. No response on other lines. All
water lines are good. Air to vacuum leack check on ITE and TM4: TM4 IG1 / Steers side panel has a low E-6 atm.cc/sec leak. The o-ring need to be
changed when TM4 is located at TCS. All other air to vacuum seals are good on both primary and secondary vacuum vessel. |
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Thursday, February 15, 2024, 17:40, Carla Babcock, ITE, Standard Operation, , , ITE annual HV testing
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ITE was set up for HV tests - this time the module plug was not in so the BIAS and EE had to be bypassed. NOTE: ITE:BIASPLC must also be bypassed for
this to work. Currently it is located on the vacuum bypasses page, but may be changed to the optics page soon.
ITE was ramped to 60kV in steps of 1kV easily. It sat at 60 for about 1.5 hours with a current draw around 173uA. It was not entirely stable though, |
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Wednesday, January 06, 2021, 10:39, David Wang, ITE, Standard Operation, TM4, , ITE and TM4 annual leak check.
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| Frank and I finished ITE and TM4 primary and secondary vacuum vessel leak check. ＬＤ ｂｅａｓｅ ｌｅａｋ ｒａｔｅ ０.０ｘ－９ａｔｍ．ｃｃ／ｓｅｃ． Ｎｏ ｌｅａｋ ｈａｓ ｂｅｅｎ ｆｏｕｎｄ．Ａｌｓｏ， Ａｌｌ ＴＭ４ ｗａｔｅｒ ｌｉｎｅｓ ｈａｖｅ ｂｅｅｎ ｐｒｅｓｓｕｒｉｚｅｄ ｗｉｔｈ ７０ｐｓｉ ｈｅｌｉｕｍ ｆｒｏ ３ ｍｉｎｕｔｅｓ ｏｎ ｅａｃｈ ｃｉｒｃｕｉｔ． Ａｌｌ ｗａｔｅｒ ｌｉｎｅｓ ｉ |
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Wednesday, January 18, 2017, 09:55, David Wang, ITE, Standard Operation, TM4, , ITE and TM4 2017 winter shut down leak check.
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ITE and TM4 2017 winter shut down leak check are finished. All ITE primary, secondary vacuum vessel and TM4 water lines are good. No any leak has been
found. |
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Monday, January 09, 2012, 14:44, David Wang, ITE, Maintenance, TM4, , ITE and TM4 2012 winter shut down leak check is completed.
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I did a vacuum leak check on all ITE primary vacuum vessel and secondary vessel.I also did a helium pressure test(80psi ) on all TM4 water lines. There
is no leak has been found.ITE and TM4 are both leak tight now.
ITE primary vacuum vessel and TM4 waterlines: |
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Wednesday, January 29, 2025, 09:06, David Wang, ITE/ITW, Standard Operation, , , ITE and ITW water system paddle wheels and coils on flow sensors have been replaced
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| ITE and ITW water system paddle wheels and coils on all flow sensors in pits have been replaced. It's a SAS job. |
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Wednesday, August 13, 2014, 12:21, David Wang, ITE, Repair, TM4, UCx10, ITE TP4S is replaced
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ITE TP4S was broken down last night . I stopped the ITE pumps and vented station with Argon this morning. Edi and I replaced the broken pump with a new
pump. The ITE is under roughing now. |
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Tuesday, July 28, 2015, 10:17, David Wang, ITE, Repair, , , ITE TP4 has been replaced
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Tony and I replaced the ITE TP4 turbo pump today. The pumping time on controller has been reset to 0. The replaced broken pump is bagged and stored
at west end of TH. |
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Friday, June 19, 2020, 11:21, David Wang, ITE, Repair, TM4, P2N test., ITE TP3 is replaced.
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| ITE TP3 is replaced. ITE is under vacuum again. All turbo pumps are started successfully. Current draw on pumps are normal so far. |
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Tuesday, November 19, 2013, 14:24, David Wang, ITE, Repair, , , ITE TP3
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Hi all, The old ITE TP3 pump is moved out and the new pump is in
postion .Since this time I used a new holding ring(1 piece) insead of old 2 pieces holding ring which are thicker than new ring, the old holding
bolts are a little bit too long for the thread holes on the ITE exit 1. I have to find the right length bolts for this new holding ring. The pump |
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