 Friday, May 19, 2017, 12:25, David Wang, Conditioning Station, Standard Operation, TM4, , TCS and TM4 water flow measurement.
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TCS(LPM) |
Freq(HZ) |
TCS+TM4(LPM) |
Freq(HZ) |
| Ta |
5.5 |
106 |
3.7 |
68 |
| Tu |
5.6 |
107 |
4.3 |
79 |
| Coil(RU only) |
5.8 |
112 |
4.6 |
92 |
| HS |
7.0 |
13 |
6.6 |
12 |
| MSP |
6.4 |
21 |
5.8 |
21 |
| EE |
5.6 |
112 |
3.8 |
77 |
| Window |
4.5 |
81 |
4.3 |
78 |
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Friday, May 19, 2017, 13:49, David Wang, Conditioning Station, Repair, TM4, , TM4 TP1 at TCS
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TM4 TP1 is replaced. TCS and TM4 was argon vented before the job.The job took about 30minutes. I started the all turbo pumps after job. All pumps work fine. The TCS vacuum is good. |
Wednesday, June 07, 2017, 13:33, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 SiC#36 leakc check and electrical check. 
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The results are good. See attachment. |
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Wednesday, June 07, 2017, 13:34, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 and TCS vacuum system has been connected.
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I started all turbo pumps. |
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Thursday, June 08, 2017, 07:37, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 water llines at TCS.
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The helium pressure test on HS line is done at TCS this morning. I got the same result as last time when we helium pressure it it with first target in April. The leak rate on this line is 1.8 XE-7atm.cc/sec. So, we know this leak is mostly on the line, but not on the VCR joints connecting the target. See attachment for last time(April) checking e-log. The leak could be from water block which is same as other lines. I do not think this leak rate will affect the operation.
The attachment can not be opened for some reasons. Please check TM2 leak check 2017-03-13 e- log for last time test result and comment. |
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Thursday, June 08, 2017, 08:35, David Wang, Conditioning Station, Development, TM2, , TM2 gas line reconfiguration on the module top.
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Reconfigured TM2 gas line on the module top. It matches with the febiad gas line we are using on service tray now. Facing the module, both of them should be that right side line of two SST lines on feed-through. The gas line on TM2 was leak checked with a blind cap installed on service tray side and LD connected on module top this Tuesday. It is leak free with helium spray on the top of module and service tray. |
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Monday, June 19, 2017, 07:29, David Wang, Conditioning Station, Standard Operation, TM2, , Update TH MS project schedule.
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Update TH MS project schedule. See attachment 1,2. |
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Tuesday, June 27, 2017, 09:14, Travis Cave, Conditioning Station, Standard Operation, TM4, Ta#52, Module move
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TM#4 with Ta#52 has been moved from south hot cell to the conditioning station. |
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Tuesday, June 27, 2017, 14:34, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 vacuum has been connected at TCS
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Turbo -pumps are started . The vacuum looks good so far. |
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Wednesday, June 28, 2017, 09:14, Travis Cave, Conditioning Station, Standard Operation, TM4, Ta#52, Electrical Check
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Results of electrical check of TM#4 with Ta#52 at the south hot cell and the conditioning station under vacuum. |
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Wednesday, June 28, 2017, 10:00, David Wang, Conditioning Station, Standard Operation, TM4, Ta#52, TM2 has been connected at TCS
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I started TCS water system. |
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Wednesday, June 28, 2017, 16:43, Anders Mjos, Conditioning Station, Standard Operation, TM4, Ta#52, Conditioning Ta#52
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NEW HV cable for BIAS installed earlier this week.
Wednesday, June 28, 2017, 16:42: BIAS at 20 kV
Wednesday, June 28, 2017, 16:46: BIAS at 30 kV, EZL at 15 kV
Wednesday, June 28, 2017, 17:00: BIAS at 35 kV, EZL at 17.5 kV
The voltage response on TBHT and TGHT changed as the target was heated up. This was later determined to be due to target shorting to heat shield and the grounding of the power supplies being achieved at the HV pedestal in the target hall and not in the HV enclosure as is done online. When this was changed, the target operated normally again. |
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Thursday, June 29, 2017, 11:55, David Wang, Conditioning Station, Repair, , , TCS HV cable and feed through installation
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John Chow and I installed new TCS HV cable and feed through with their mounting panel back to TCS Faraday cage this Tuesday. ECO-4269 has been issued for the new cable feed through and mounting panel. |
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Wednesday, July 05, 2017, 11:18, Anders Mjos, Conditioning Station, Maintenance, TM4, Ta#52, Changed electrical configuration to cathode bias
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John Chow configured TCS to cathode bias mode (IRH1538). The anode P/S is in positive mode. |
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Monday, July 10, 2017, 10:19, David Wang, Conditioning Station, Standard Operation, TM4, , Turned off TCS water system
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Prepare for TM4 move tomorrow morning. |
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Wednesday, July 12, 2017, 11:05, Anders Mjos, Conditioning Station, Maintenance, , , Testing of new high voltage cable
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The target hall has been locked-out as per Document-70039.
Forced IG1, IG1S and IG2 to switch on BIAS power supply
Wednesday, July 12, 2017, 11:53: 70 kV at 0.16 mA
2 sparks observed shortly after 70 kV was reached
Wednesday, July 12, 2017, 12:59: No sparks for the last hour.
BIAS power supply off. Forces removed. |
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Thursday, July 13, 2017, 10:53, Travis Cave, Conditioning Station, Standard Operation, TM3, no target, Module move
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TM#3 has been moved from the north east silo to the conditioning station. |
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Monday, July 17, 2017, 16:28, Anders Mjos, Conditioning Station, Development, TM3, No target, Conditioning TM3
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50 kV stable with less than 1 spark/h during the weekend by RIB obs.
Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it.
The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover. |
 Monday, July 17, 2017, 17:50, Aurelia Laxdal, Conditioning Station, Development, TM3, No target, Conditioning TM3
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| Anders Mjos wrote: |
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50 kV stable with less than 1 spark/h during the weekend by RIB obs.
Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it.
The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover.
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EL was brought to 27.5kV. |
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Tuesday, July 18, 2017, 16:53, Anders Mjos, Conditioning Station, Development, TM3, No target, Conditioning TM3
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Conditioning continues today with resistors removed from the HV cable
Tuesday, July 18, 2017, 16:53: BIAS / EZL 50 / 25 kV - no sparks
Tuesday, July 18, 2017, 16:56: BIAS / EZL 55 / 27.5 kV - one spark
TM3 remained at 55 kV over night. Turbo pumps tripped twice and was restarted and HV recovered by RIB ops. Last recovery brought EZL to 16 kV (not 27.5 kV)
About 25 sparks over 15 h. No sparks for the last 3 h
Wednesday, July 19, 2017, 08:12: EZL to 27.5 kV
Wednesday, July 19, 2017, 08:38: BIAS to 57 kV
Wednesday, July 19, 2017, 08:46: BIAS to 57.5 kV
Wednesday, July 19, 2017, 09:05: BIAS to 59 kV
Wednesday, July 19, 2017, 09:19: BIAS to 60 kV
Wednesday, July 19, 2017, 09:28: EZL to 30 kV
Wednesday, July 19, 2017, 12:25: Heavy sparking. Lowered BIAS to 30 kV
Wednesday, July 19, 2017, 12:37: Increased BIAS again towards 50 kV, but heavy sparking again between 45 and 50 kV. Lowered back to 30 kV
Wednesday, July 19, 2017, 12:40: BIAS at 46 kV
Wednesday, July 19, 2017, 12:42: BIAS at 47 kV
Wednesday, July 19, 2017, 12:44: BIAS at 48 kV
Wednesday, July 19, 2017, 12:48: BIAS at 50 kV
Wednesday, July 19, 2017, 14:50: BIAS at 55 kV after ~2h without sparking at 50 kV
Wednesday, July 19, 2017, 15:12: Sparking. Lowered to 40 kV
Wednesday, July 19, 2017, 16:39: BIAS at 55 kV
Friday, July 21, 2017
Observed top of module inside target hall during HV sparks using crane cameras. No sparks observed, but some faint sound could be heard. Module still sparks at 60 and 55 kV. Have to lower to 40 kV to stop sparking.
Friday, July 21, 2017, 13:25: BIAS / EZL at 50 / 25 kV for without sparking for the last 90 min |
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