 Wednesday, November 02, 2011, 13:12, Bevan Moss, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, High Voltage (HV) testing
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The silicon carbide targets voltage was raised to 42 kV today before continuous current draw was observed. It took roughly 10 minutes to raise
the module to this voltage with only the occasional spark. The ION gauge reading was 2.0 x 10^-6 T, The service cap IMG 3.6 x 10^-6 T, and the secondary
vacuum was 4.5 x 10^-6 T. Setup check and conditioning was performed by Pierre. |
Friday, November 18, 2011, 16:29, Bevan Moss, Conditioning Station, Standard Operation, TM1, N/A, High Voltage (HV) testing 
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TM1 was high voltage tested without a target on November 16, 2011 with Don Jackson, Pierre Bricault, and Bevan Moss. The module was able to hold
up to 25 kV but between that and 32 kV there was lots of discharge which could be measured in the vacuum. See the attached plot for the voltage current
and sparks. |
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Friday, April 08, 2016, 08:13, Anders Mjos, ITE/ITW Cooling, Maintenance, , , High Active Water Resistivity
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The high active water resistivity took a long time to recover after the upgrade to the water cooling circuit. The system needed about a month (from end
February to end March) to recover to nominal values. See attached plot of archiver data.
TM1 has now been connected in ITW and the water resistivity remains > 8 MOhm cm, which should allow normal operation. However, the resin is |
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Tuesday, January 14, 2020, 10:12, David Wang, Conditioning Station, Standard Operation, TM3, , Helium spray leak check on TCS.
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Using a long pole with a probe to spray helium on TCS vacuum seals and joints which are installed in TCS service pit. No response has been found
on leak detector during leak check. TCS is leak free. |
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Wednesday, August 03, 2016, 09:45, David Wang, Conditioning Station, Standard Operation, TM4, UC#17, Helium pressure test on TM4 HS line at TCS
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Helium pressure test on TM4 HS line at TCS is done.Leak detector 0.0X E-9atm.cc/sec. 5minutes, 70psi helium. No response
on LD. |
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Thursday, November 03, 2016, 08:57, David Wang, Conditioning Station, Standard Operation, TM4, , Helium pressure test on TM4 HS line at TCS
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| 70 psi helium ,2minutes to TM4 HS line. LD base leak rate 0.0xE-9 atm.cc/sec. No leak. |
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Monday, April 11, 2016, 09:42, David Wang, Conditioning Station, Standard Operation, TM4, , Helium pressure test on TM4 HS line at CS with new Lp Ta target
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| 70 psi helium , 2 minutes. Base leak rate 0.0x E-9 atm.cc/sec. base pressure 0.0XE-4 torr. no response on LD.The line is good. |
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Thursday, November 26, 2015, 07:34, David Wang, Conditioning Station, Standard Operation, TM4, UC#14, Helium pressure test on TM4 HS line at CS
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| I did helium pressure test on TM4 HS line at TCS this morning. 70psi helium 3 minutes, 0.0xE-9 atm.cc/sec base leak rate. No response. No leak. |
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Friday, March 27, 2015, 10:03, David Wang, Conditioning Station, Standard Operation, TM4, Ta#45, Helium pressure test on TM4 HS line at CS
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The helium pressure test on TM4 HS line at conditioning station is done. No leak. I also leak checked all vacuum seals on TM4 service cap. They are all
good. |
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Tuesday, July 28, 2015, 10:12, David Wang, Conditioning Station, Standard Operation, TM4, UCx 13, Helium pressure test on TM4 HS line at CS
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I did the helium pressure test on TM4 HS line at CS. Applied 70 psi helium 2 minutes. base leak rate0.0x E-9 atm.cc/sec. No response during
the test. No leak. |
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Wednesday, September 23, 2015, 14:32, David Wang, Conditioning Station, Standard Operation, TM4, Ta#45, Helium pressure test on TM4 HS line at CS
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| Helium pressure test HS line at CS with 70 psi for 2 minutes. Base leak rate 0.0xE-9atm.cc/sec. No response. The line is leak tight. |
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Thursday, August 25, 2016, 08:36, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 HS water lline
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I did a helium pressure test on TM2 HS water line at TCS. Leak detector base leak rate only could get to 1.8x e-8 atm.cc/sec at this moment. Applied
5 minutes 70psi helium on it. No leak has been found at this level. I connected water to this circuit after the test for weekend TM2 conditioning at TCS.
I will do another helium pressure test after the conditioning. The LD base leak rate should be 0.0Xe-9 atm.cc/sec at that time. |
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Wednesday, August 26, 2015, 14:52, David Wang, Conditioning Station, Standard Operation, TM2, ZrC, Helium pressure test on TM2 HS and window lines at CS
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LD base LR 0.0xE-9 atm.cc/sec , 80 psi helium 2 minutes on HS and window circuits. No leak. Also, the reinstalled(after rewiring job) TP2 and PNG1(steers)
side panel have been leak checked. No leak. |
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Friday, May 13, 2016, 10:08, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 HS and window line at CS with new Lp Ta target
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These two lines are passed helium pressure test this morning. The LD base leak rate 0.0 X E-9 atm.cc/sec. The base pressure 0.0 X E-4 torr. Helium pressure
70 psi. applied helium to both line for 5minutes each. No response on LD during the test. |
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Thursday, September 28, 2017, 10:50, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 window and HS water lines at TCS.
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I did helium pressure test on TM2 containment box window and HS line at TCS. @ 70psi helium for 3 minutes, HS:2.2XE-7 atm.cc/sec., Window:1.2XE-7
atm.cc/sec. There is no change on HS. But LR on window is bigger than before that was in E -9atm.cc/sec range. |
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Thursday, April 13, 2017, 11:33, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 water llines at TCS.
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LD BLR :0.0 X E-9 atm.cc/sec. BP:0.0XE-4 torr. helium 70 psi. 3 minutes on each circuit
HS
1.8XE-7 ATM.CC/SEC
TA+
1.4 XE-7
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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. |
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Monday, January 16, 2017, 09:32, David Wang, ITW, Standard Operation, TM2, , Helium pressure test on TM2 water llines at ITW
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TM2 helium pressure test result at ITW. 70 psi helium 3 minutes on each circuit. LD base LR0.0XE-9atm.cc/sec BP 0.0XE-4torr. ITW IG1 1.22Xe-7
torr, ITW IG1S 1.31XE-7torr, ITW PNG4 2.66XE-6Torr(ITW TP4 off).
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Friday, May 20, 2016, 10:38, David Wang, Conditioning Station, Standard Operation, TM2, Ta#48, Helium pressure test on TM2 with new Lp Ta target
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LD base LR: 0.0 X E-9. Base pressure:0.0 X E-4. 70 psi helium. 5 minutes each circuit.
window
0.0X E-9
HS
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Monday, April 04, 2016, 11:14, David Wang, Conditioning Station, Standard Operation, TM1, , Helium pressure test on TM1 HS line at CS
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| New UCx target is installed on the module. 70psi helium,3 minutes. NO response on LD. LD is pumped to bottom LR and LP during test. |
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