 Friday, July 03, 2020, 06:57, David Wang, ITW, Standard Operation, TM2, C#1, TM2 CONNECTION CHECKLIST 
|
| SEE ATTACHMENTS. EVERYTHING IS GOOD. |
|
Friday, July 03, 2020, 07:03, David Wang, South Hot-Cell, Standard Operation, TM4, BEFORE TARGET INSTALLATION, ELECTRICAL CHECK BEFORE TARGET INSTALLATION.
|
| PQ SHORT TO RU. A TO PQ 1.8 M OHM AT 500 V. THE REST ARE OL |
|
Friday, July 03, 2020, 13:23, David Wang, South Hot-Cell, Standard Operation, TM4, UCx#30, TM4 UCx#30 Electrical check and HS leak check
|
| Electrical and leak check are good. See attachment. |
|
Monday, July 06, 2020, 07:54, David Wang, ITE, Standard Operation, TM4, UCx 30, TM4 has been connected in ITE connection
|
| TM4 has been connected in ITE. Vacuum pumping down is good so far. |
|
Monday, July 06, 2020, 12:20, David Wang, ITW, Standard Operation, TM2, C#1, Five shielding blocks to ITW
|
| Five shielding blocks are transferred to ITW |
|
Tuesday, August 18, 2020, 09:06, David Wang, ITW, Standard Operation, TM2, , TM2 and ITW entrance module have been disconnected in ITW
|
| Tm2 and itw entrance module have been disconnected in ITW. I will attach disconnection checklist later. |
|
Wednesday, August 26, 2020, 09:52, David Wang, South Hot-Cell, Standard Operation, TM2, Ta#60, Ta#60 target electrical check and leak check at SHC.
|
Electrical check and leak check at SHC. NO leak. electrical check ok. Before target on, A is short to PQ, RU is short to HS ( 60KV bias)
as we measured before. |
|
Thursday, August 27, 2020, 08:21, David Wang, Conditioning Station, Standard Operation, TM2, Ta#60, Helium pressure check on TM2 HS line at TCS.
|
Helium pressurize on TM2 HS line at TCS is done. Base LR is 0.0X E-9 atm.cc/sec. 70 psi helium 3 minutes. No response. Also, The TCS vacuum pumping
down over night is good. |
|
Thursday, September 24, 2020, 11:25, David Wang, Conditioning Station, Standard Operation, TM4, UC#31, TM4 HS line leak check at SHC and TCS.
|
| Both helium spray and helium pressurize on TM4 HS line withUCx31 target are done at SHC and TCS. No leak. |
|
Tuesday, September 29, 2020, 12:12, David Wang, ITE, Repair, TM4, , TM4 steerers staus after" left " grounding issue, and first stage investigation
|
Left (short) is switched with bottom. So on module:
"Top" is still top.
"Left" is bottom |
|
Tuesday, September 29, 2020, 14:28, David Wang, South Hot-Cell, Standard Operation, TM4, UC#31, TM4 UC#31 Electrical check and HS leak check
|
| Tm4 UCx 31# electrical check result. See attachment. |
|
Monday, October 19, 2020, 12:52, David Wang, South Hot-Cell, Standard Operation, TM2, C#2, TM2 electrical and leak check at SHC
|
| TM2 electrical check and leak check are done at SHC with C#2 target installed. The results are good. |
|
Thursday, November 05, 2020, 10:23, David Wang, Spent Target Vault, Standard Operation, , , TM2 old source tray and TM4 optic tray in vault tray#9.
|
TM2 old source tray and TM4 optic tray are stored together in vault tray#9. The fielding measurement at SHC post 0.5 meter distance:
March 1st 2019, maximum 14.6msv/hr, minimum 4.78 msv/hr |
|
Wednesday, November 18, 2020, 15:28, David Wang, South Hot-Cell, Standard Operation, TM2, Nb#6, electrical check and HS leak check.
|
| Everything looks good. A still short to P before target installation. We will float P,Q as before on module top. |
|
Thursday, November 19, 2020, 09:00, David Wang, Conditioning Station, Standard Operation, TM2, Nb#6, Helium pressure check on TM2 HS line at TCS.
|
| LD 0.0 Xe-9 atm.cc/sec , 70 psi helium 3 minutes. No leak. |
|
Tuesday, November 24, 2020, 12:56, David Wang, ITW, Standard Operation, TM2, Nb#9, TM2 has been connected in ITW
|
| TM2 has been connected to ITW. Turbo pumps are stared. ITW pumping down is fine so far. |
|
Wednesday, January 06, 2021, 10:39, David Wang, ITE, Standard Operation, TM4, , ITE and TM4 annual leak check.
|
| 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 |
|
Monday, January 18, 2021, 12:29, David Wang, ITW, Standard Operation, TM2, Nb#9, ITW vacuum and TM2 water lines leak check .
|
ITW primary and secondary vacuum vessel leak check are done. There is a 5XE-8 atm.cc/sec leak on Exit service cap NW side square panel. The leak
is small. And, it is close to ITW TP3 so it is not affect ion beam line vacuum during operation. We will replace the seal on the panel later.
The rest leak check on air to vacuum seals are good. TM2 water lines are pressurized with 70 psi helium. We did it 3 hours after water lines are |
|
Friday, January 22, 2021, 12:34, David Wang, ITE, Standard Operation, , , ITE HV test.
|
ITE annual HV test is done. No module in station. The bias power supply has been ramped up to 49KV on control page. We still have voltage limit issue
on this PS at 48KV so it only can go to 47.7 KV on PS panel. No major spark during test.. The test result is same as last year test which was did in March
2020. |
|
Monday, January 25, 2021, 10:57, David Wang, South Hot-Cell, Repair, TM4, , TM4 steers short investigation.
|
Cables were disconnected for steers in containment box. The Megga measurement (500V) result from the top of the module:
Left to right: OL, left to top OL, left to bottom OL, right to top OL, right to bottom OL, Top to bottom OL. And all of them to ground
are OL. No short on cables from module top to steers itself. The short should be inside the steers. It will be confirmed with directly test on steers. |
|