 Tuesday, March 05, 2019, 07:20, David Wang, Conditioning Station, Repair, TM2, , TM2 HV test at TCS
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Spark between HV cover vertical mesh plate and HS 60KV bias connecting clamp 90degree angle at 55 KV on TM2 top. HV cover is removed to test above
55KV. The spark triggered TH and SHC ventilation secondary alarm. |
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Thursday, March 07, 2019, 09:12, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 move from TCS to SHC.
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| TM2 has been moved from TCS to SHC. The move is smooth. |
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Monday, March 18, 2019, 07:23, David Wang, Conditioning Station, Repair, TM2, , TM2 window line helium test
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New seals with a blank off cap are installed on TM2 window line water block. The seals are checked at TCS with 70 psi helium for 5 minutes
with LD at 0.0xE-9atm/cc.sec. No response on LD during test. Seals are good. |
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Monday, March 18, 2019, 07:25, David Wang, Conditioning Station, Maintenance, TM3, , TCS vacuum pumps have been stopped.
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| The TCS will be vented soon for TM2 move. |
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Thursday, March 28, 2019, 10:27, David Wang, Conditioning Station, Repair, TM2, dummy febiad test target, TM2 new source tray helium pressure test at TCS.
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Helium pressure test on TM2 all water circuits is done. 70 psi helium , 10 minutes test time. Leak detector :base leak rate 0.0XE-9 atm.cc/sec, base
pressure 0.0Xe-4torr. No any response on LD during the test. All TM2 water circuit are leak free. |
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Monday, May 13, 2019, 11:22, David Wang, ITW, Repair, , , ITW entrance module has been connnected.
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| Entrance module has been connected back to ITW. Everything is normal. |
Wednesday, May 22, 2019, 11:50, David Wang, ITE, Standard Operation, TM4, , TM2 has been connected in ITE. 
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TM2 has been connected in ITE. high active water system and vacuum pumps are started. The pumping down on TM2 and ITE is good so far.
See attachment for connection checklist. |
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Wednesday, May 22, 2019, 11:52, David Wang, Conditioning Station, Maintenance, TM1, , TM1 inpsection.
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| TM1 shielding plates and their holding bolts are inspected. No corrosion. TM1 is located at TCS now. Both TP1 and TP2 are started. |
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Tuesday, June 04, 2019, 08:46, David Wang, ITE, Standard Operation, TM2, , ITE water signal interlock check.
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ITE water signal interlock check is done. Everything is good. Coil 2 circuit no longer used in ITE . PQRU are looped as one circuit fro coil 1
circuit on Module since now. |
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Friday, June 07, 2019, 13:11, David Wang, Conditioning Station, Development, TM4, , TCS and TM4.
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| TM4 has been connected at TCS for HV test. TCS water system and vacuum pumps are switched on. |
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Thursday, June 13, 2019, 10:55, David Wang, Conditioning Station, Repair, TM4, , TM4 HV test at TCS without source tray.
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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. |
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Friday, June 14, 2019, 08:15, David Wang, ITE, Standard Operation, TM2, , 5 shielding blocks are moved to ITE.
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| ITE is configured to take proton beam. |
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Friday, June 21, 2019, 07:16, David Wang, South Hot-Cell, Development, TM4, , TM4 new source tray leak check at SHC.
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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 |
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Monday, July 15, 2019, 13:29, David Wang, Conditioning Station, Development, TM4, , Vacuum surge when TM4 B line iwas supplied with water.
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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. |
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Friday, July 26, 2019, 11:28, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 move from SHC to TCS.
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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. |
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Friday, July 26, 2019, 11:41, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 with spare target electrical check and leak check.
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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 |
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Wednesday, August 14, 2019, 08:55, David Wang, ITE, Standard Operation, TM2, , TM2 has been disconnected in ITE.
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| TM2 has been disconnected in ITE. The bias jumper between U and T was burned out during the last beam time. |
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Friday, August 16, 2019, 08:46, David Wang, ITE, Standard Operation, TM4, ZrC #8., TM2 has been connected in ITE.
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| TM2 has been connected in ITE. turbo pumps have been started. ITE and TM2 vacuum are good. |
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Friday, August 16, 2019, 08:51, David Wang, Conditioning Station, Repair, TM4, , TM4 waterlines helium pressure test at TCS.
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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. |
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Friday, August 16, 2019, 08:52, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 is moved from TCS to SW silo.
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| TM4 is moved from TCS to SW silo this morning. The move is good. |
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