 Thursday, June 13, 2019, 10:55, David Wang, Conditioning Station, Repair, TM4, , TM4 HV test at TCS without source tray.
|
I brought up TCS bias to 57.5 KV on TM4 without source tray at TCS. It was kept at this level about 1.0 hours. Some intermediate sparks. No spark trip
on devices. 57.5KV is very close to the HV up limit of this module. |
|
Friday, June 14, 2019, 08:15, David Wang, ITE, Standard Operation, TM2, , 5 shielding blocks are moved to ITE.
|
| ITE is configured to take proton beam. |
|
Friday, June 21, 2019, 07:16, David Wang, South Hot-Cell, Development, TM4, , TM4 new source tray leak check at SHC.
|
New source tray was installed on TM4 yesterday. LD was used to pump down all water lines. Tube heater +D circuit has a big leak around water block
area. At base LR5.5 XE-5 atm.cc/sec, base pressure 170 mtorr, When Chad moved this helium probe close to water block area, The leak rate on
LD went to maximum level right away. When the probe was moved out of water block area, the LR went back to base level. The test repeated again with same |
Monday, July 15, 2019, 13:29, David Wang, Conditioning Station, Development, TM4, , Vacuum surge when TM4 B line iwas supplied with water. 
|
Yesterday, TM4 B line was supplied with water at TCS for testing. TCS: IG1 and IG2 had big response on it. See attachment. The water was disconnected
right away, and line was purged. Vacuum recovered after overnight pump. |
|
Friday, July 26, 2019, 11:28, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 move from SHC to TCS.
|
Tm4 has been moved from SHc to TCS without containment box. It is a new source tray on TM4. A layer of plastic sheet was put on TH floor on module
pass route during the move. |
|
Friday, July 26, 2019, 11:41, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 with spare target electrical check and leak check.
|
Electrical check on TM4 with spare test target. PQ is still shorted to RU. But, The short between 60KV bias and PQRU which we found last time is gone.
Target to PQRU at 250V mega measurement: 22.08 M. All conductivity between ABCD are about 5.0 m ohm which are good. All other ohm meter and Mega measurements
are OL. Helium spray leak check on HS target VCR fittings is passed. Two blank offs are installed on source tray window cool lines. They passed leak |
|
Wednesday, August 14, 2019, 08:55, David Wang, ITE, Standard Operation, TM2, , TM2 has been disconnected in ITE.
|
| TM2 has been disconnected in ITE. The bias jumper between U and T was burned out during the last beam time. |
|
Friday, August 16, 2019, 08:46, David Wang, ITE, Standard Operation, TM4, ZrC #8., TM2 has been connected in ITE.
|
| TM2 has been connected in ITE. turbo pumps have been started. ITE and TM2 vacuum are good. |
|
Friday, August 16, 2019, 08:51, David Wang, Conditioning Station, Repair, TM4, , TM4 waterlines helium pressure test at TCS.
|
LD base leak rate, 0.0Xe-9atm.cc/sec. Helium pressure, 70psi. 5 minutes each circuit. No response on all water line except containment box window which
has a VCR leak issue now. Window line leak rate, 2.3Xe-4 atm.cc/sec. |
|
Friday, August 16, 2019, 08:52, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 is moved from TCS to SW silo.
|
| TM4 is moved from TCS to SW silo this morning. The move is good. |
|
Monday, September 09, 2019, 06:38, David Wang, Conditioning Station, Standard Operation, TM4, UCx27, HS and window line leak check.
|
| TM4 HS and window line are helium pressure checked at TCS. 70 psi helium 5 minutes. No response @1.2XE-8 atm.cc/sec. They are leak free. |
|
Tuesday, September 10, 2019, 08:25, David Wang, Conditioning Station, Standard Operation, TM4, UCx27, Argan vent TCS.
|
| TCS is argon vented. TM4 is disconnected at TCS. |
|
Tuesday, September 10, 2019, 14:04, David Wang, ITW, Standard Operation, , , ITW water interlock check.
|
| ITW water interlock check is finished. Everything is good. |
|
Thursday, September 12, 2019, 09:26, David Wang, ITW, Repair, TM4, , ITW bad vacuum issue and trouble shoot.
|
ITW secondary vacuum was bad in last two days after TM4 was connected in ITW. Today when check the exit 2 module, I found a small needle valve on exit
2 module top was slightly opened for some reason in past months. The valve is closed . ITW vacuum is returned to normal status. |
|
Friday, September 13, 2019, 13:36, David Wang, ITW, Standard Operation, TM4, UCX27, TM4 conenction in ITW checklist
|
| TM4 was connected in ITW this Tuesday. See attachment for checklist. |
|
Friday, October 04, 2019, 16:43, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 has been connected at TCS.
|
| TM2 has been connected at TCS this morning. helium pressure test on Tm2 HS line is done. No leak. |
|
Friday, October 04, 2019, 16:50, David Wang, South Hot-Cell, Standard Operation, TM4, , UCx 28 target with TM4 SHC leak check and electrical check.
|
TM4 HS Leak check result is good . No leak. electrical check after target installation: Bias to chassis 550 Mohm. Coils are shorted each other and shorted
to 60 KV bias. ABCD to 60KV bias 500V Megga measurement are 100M at least which is good. EE to bias are OL at 500V. The electrical check result is good.
|
|
Monday, October 07, 2019, 14:03, David Wang, ITE, Standard Operation, TM2, Ta 59, TM2 has been connected in ITE.
|
| Tm2 with Ta 59 has eben connected in ITE. Turbo pumps are started. See checklist |
|
Wednesday, October 23, 2019, 06:56, David Wang, ITW, Standard Operation, TM4, UCX 28, TM4 UCx 28 disconnection checklist
|
| TM4 was disconnected in ITW. See checklist. |
|
Friday, October 25, 2019, 06:43, David Wang, Safe Module Parking, Development, TM3, , SMP vacuum
|
TM3 was moved into SMP Oct 25 morning. After two nights pumping down, SMP CG1 read 30mtorr this morning. The pump is stopped. SMP will be
vented soon for TM3 moving back to silo. |
|