Anders Mjos wrote:

to test the effect of extraction when biasing of the target.

 Testing finished. Switched back to negative polarity.

 Graham Waters is looking into this problem. The IOC has been rebooted a couple of times.

Dave Morris increased the current from ~ 1 A to ~2.5 A. This seem to solve the problem with the in/out drive of the emittance meter

Fault report submitted. 9156

Thursday, July 28, 2016, 09:55: Controls group resolved the issue by cycling the power on the canbus controller

Thursday, September 08, 2016, 08:20: Vacuum group changed to the other filament to investigate vacuum spikes on IG6

Spikes In Green.

Spikes in Grey.

Aaron Schmidt wrote:

Fault report was submitted. Anders informed Anthony on Tuesday, Sept 6, 2016. Fault report # 9233.

 Tuesday, September 13, 2016, 14:38: RP1 replaced by Edi

Anders Mjos wrote:

Aaron Schmidt wrote: Fault report was submitted. Anders informed Anthony on Tuesday, Sept 6, 2016. Fault report # 9233.  Tuesday, September 13, 2016, 14:38: RP1 replaced by Edi

Wednesday, September 14, 2016, 13:57: The pump does not run properly. Attempting to contact vacuum group

Found that the exhaust pipe needed to be disconnected from the pump. Asked plant group (Curtis) to investigate exhaust pipe on the outside of the building, to check if it is restricted again.

Thursday, September 15, 2016, 11:03: Starting turbos

Thursday, September 29, 2016, 11:16: Turbos stopped.

Friday, September 30, 2016, 08:24: Venting.

Breaker tripped during roughing. Removed exhaust line during first 2 min.

Tuesday, October 11, 2016, 14:55: Turbos at speed. Vacuum at 1.0E-6 T

Wednesday, October 12, 2016, 12:09: Ion gauge & Turbo pumps off.

Wednesday, October 12, 2016, 13:52: Venting

Friday, October 14, 2016, 13:17: Restarted pumps

Friday, October 14, 2016, 13:4: Another trip: restarted pumps

Tuesday, October 18, 2016, 12:12: Venting.

Friday, November 25, 2016, 14:28: Roughing

Friday, November 25, 2016, 14:47: Turbos started

Friday, November 25, 2016, 14:56: Turbos at speed. Vacuum at 6.4E-6 T. RGA on

Monday, November 28, 2016, 08:45: Ion gauge & Turbo pumps off.

Monday, November 28, 2016, 15:02: Venting.

Monday, November 28, 2016, 15:32: Camera removed & bagged.

The variable leak rate valve will be used for TM3 HV spark tests in TCS

Anders Mjos wrote:

The variable leak rate valve will be used for TM3 HV spark tests in TCS

 Variable leak valve returned yesterday (2017-01-18). New calibrated leaks installed. Ar and Ne. System leak checked OK after.

Wednesday, March 22, 2017, 09:3: Roughing

Wednesday, March 22, 2017, 10:05: Turbos started

Friday, March 24, 2017, 11:01: Turbos off. Ion gauge off.

Friday, March 24, 2017, 14:42: Venting.

The vacuum behaved erratic over night with excursion up into the mid 10^-6 Torr range. To investigate the chamber was vented. With the doors open, the o-rings and sealing surfaces were cleaned. When pumping down again a vacuum leak could be heard at the front door by the lock. The chamber was vented again twice, finally the two o-rings were swapped. This removed the large leak. The door is prevented from contacting the box at the lock, which is likely the source of the leak.

A water to vacuum leak has been found on FS#3. The leak is not detected on the leak detector, but can be seen as an increase in vacuum and on partial water pressure on the RGA

Wednesday, April 12, 2017, 17:11: The leak is on circuit EG (Coil +). Confirmed with water pressure

Wednesday, April 12, 2017, 17:21: RGA off. Turbos stopped.

Wednesday, April 19, 2017, 13:00: Leak detector hooked up to TS. (Check Turbo)

Wednesday, April 19, 2017, 14:00: He to FS#3.

Wednesday, April 19, 2017, 14:31: Minimal response on leak detector. No response on RGA.

Wednesday, April 19, 2017, 14:36: Manual valve closed. Leak detector off. RGA off.

Wednesday, April 19, 2017, 14:37: FS#3 purged.

Wednesday, April 19, 2017, 14:39: Ion gauge off. Turbos off.

Wednesday, April 19, 2017, 14:44: Leak detector disconnected.

Thursday, April 20, 2017, 07:35: Venting

Thursday, April 20, 2017, 09:10: TRI-COIL CTL-FEBIAD removed.

Thursday, April 20, 2017, 09:23: Water lines (E) (G) removed w/ block. 

Thursday, April 20, 2017, 09:30: Roughing.

Thursday, April 20, 2017, 10:04: Turbos on.

Thursday, April 20, 2017, 13:15: Leak detector attached & turned on.

Thursday, April 20, 2017, 13:25: Water lines FS#5 opened to create loop. Pressurized @ 30 PSI.

Thursday, April 20, 2017, 13:45: RGA on.

Thursday, April 20, 2017, 13:58: All lines opened, purged, and re-pressurized @ 30 PSI with He.

Thursday, April 20, 2017, 14:15: Minimal response on Leak detector. No response on RGA.

Friday, April 21, 2017, 07:26: Vacuum @ 4.87E-07T. No He response on RGA. Lines still pressurized @ 30 PSI of Helium.

Friday, April 21, 2017, 10:19: Vacuum level close, but not optimal after 24 hrs. 2e-07T range is optimal.

Friday, April 21, 2017, 10:22: Adjustment of Turbo (TSG:TP1B) flanges. Stud Flange to Chamber (loose nuts found). brief vacuum spike noted.

Friday, April 21, 2017, 10:27: Turbo pump flange to Stud Flange tightened. No change on vacuum.

Friday, April 21, 2017, 10:41: Test Stand Exhaust cleaned. Clog noticed. Monitor Vacuum

Monday, April 24, 2017, 10:24: Three leaks found on FS#3. Two on the soldered ends of the VCRS (Mid-line) and one on the block. Requires repair/replacement.

Tuesday, May 02, 2017, 08:32 : RGA off.

Tuesday, May 02, 2017, 08:33: Ion gauge & Turbos off.

Tuesday, May 02, 2017, 12:55: Venting

Wednesday, May 17, 2017, 10:17: Sparking around 20 kV. Will need to vent to increase gap between water lines.

Turbos stopped.

Wednesday, May 17, 2017, 10:50: Reset IV4.

Wednesday, May 17, 2017, 10:59: Venting.

Wednesday, May 17, 2017, 11:42: Increased clearance to GND electrode.

Wednesday, May 17, 2017, 11:42: Roughing

Wednesday, May 17, 2017, 12:01: Turbos started

 The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.

Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

Anders Mjos wrote:

The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.   Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

 The Test Stand has been  configured for Cathode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4563 REV 5.

 Thursday, August 03, 2017, 17:00: Restarted TPs

 The Xantrex 10V 600 A power supply for the TBHT has been moved to ITE to replace the failed TGHT power supply