 Friday, December 04, 2020, 08:53, Carla Babcock, , , , , , , , Modifications to test stand for TM3 tests
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Friday, December 04, 2020, 08:52 :
Test stand roughed down to 29mT overnight. Started turbos for testing later. |
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Friday, December 04, 2020, 13:39, Alexander Shkuratoff, , , , , , , Done, TM3 service tray prototype preparatory HV tests
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Friday, December 04, 2020, 13:34
Vacuum is at 3.6e-6 Torr and possibly still dropping. Starting HV tests with just a tube and wire hanging down from the feedthrough. Turned on
power supply and started raising voltage. |
Tuesday, December 08, 2020, 11:54, Carla Babcock, , , , , , , , Modifications to test stand for TM3 tests 
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The copper tubes to be used in the TM3 test piece may have flux inside them from soldering the end caps on. There are holes along the length for outgassing,
and we will try to bake them out in the test stand before installing them. There is still a dummy bake out target installed there, see the photo for how
the tubes are loaded in. TGHT ramping started around 3pm. |
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Friday, December 11, 2020, 15:02, Carla Babcock, Sam McEwen, Aaron Schmidt, , , , , , , , Modifications to test stand for TM3 tests
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Test piece installed with Sam, Aaron and Alexander. Ended up shimming the support stand (middle foot) since it seemed to be bowing a bit and distorting
the gap between the containment box stand-in piece and the service tray piece. We should measure the gaps when testing is done with the same configuration.
Installation was not too hard, installed the whole thing as one piece. Had to remove the middle foot on the long side to get it through the door but otherwise |
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Monday, December 14, 2020, 11:50, Alexander Shkuratoff, , , , , , , In progress, TM3 service tray prototype HV tests
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Monday, December 14, 2020, 11:30
Switched off all breakers in HV cage. Started HV testing of TM3 prototype.
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Tuesday, December 15, 2020, 11:24, Alexander Shkuratoff, , , , , , , , TM3 service tray prototype HV tests
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Tuesday, December 15, 2020, 11:15
Vacuum at 1.0e-6 Torr. Turned bias power supply on, starting HV ramp at 500 V increments, increasing every 30-50 seconds seconds or so.
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Wednesday, December 16, 2020, 10:32, Carla Babcock, Alexander Shkuratoff, , , , , , , , TM3 service tray prototype HV tests
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Wednesday, December 16, 2020, 10:30 (Carla) :
Started ramping up about 45 mins ago, now at 50kV with no issues. No sparking, occasional current draw to get to the next voltage step. Test piece
is no longer drawing any current, as opposed to yesterday when it was drawing around 4uA at this point. Trace left on insulator must have partially evaporated |
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Thursday, December 17, 2020, 08:16, Carla Babcock, Alexander Shkuratoff, , , , , , , ,
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Ramping up to 75kV. Started drawing current at 63.5kV this time.
Now at 75kV, drawing 5uA of current. Ramp up easy.
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Monday, December 21, 2020, 07:58, Aaron Schmidt, , , , , , , , Shutdown TS
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Shutting down the ISAC TS for the planned outage on Dec 22.
Monday, December 21, 2020, 07:50: Ion gauges & turbo pumps off.
Monday, December 21, 2020, 07:51: Confirm wire scanner shutoff. |
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Monday, January 04, 2021, 08:17, Aaron Schmidt, , , , , , , , Restart TS
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Restarting TS after holidays & planned power outage.
Monday, January 04, 2021, 08:17: All epics controls in a 'white out' state.
Monday, January 04, 2021, 08:20: Rebooted PLC / IOC. Controls returned. |
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Monday, January 11, 2021, 14:20, Carla Babcock, , , , , , , , Test stand wiring reverted to anode bias mode
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I have rewired the test stand (service cap wiring only, not power supply wiring) to anode bias mode as shown in the diagram. This was not how it was
wired before, there are several things I have removed that appear to be newer additions. I also removed the burned cable between TBHT(-) and COIL(-), and
between the multipin feedthrough and ground (probably related to the other burned cable). |
 Thursday, January 14, 2021, 08:31, Fernando Maldonado, , , , , , , In progress, Gas delivery system upgrade
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Fernando Maldonado wrote:
Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage. |
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Wednesday, January 20, 2021, 11:30, Fernando Maldonado, , , , , , , Done, Cathode bias mode configuration confirmed
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Fernando Maldonado wrote:
Wednesday, October 30, 2019, 14:49: John C. changed the polarity of the anode power supply to negative, |
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Thursday, January 21, 2021, 10:55, Fernando Maldonado, , , , , , , Done, Updated Good Vac value for TSG:IG1
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On Tuesday the hard good vacuum level was changed from 7e-6 T to 1e-5 T to allow larger leak rates when testing FEBIAD.
Also this new level should allow faster heating rates (be mindful and cautious)
Work done as per WP C2021-01-19-9 |
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Tuesday, February 09, 2021, 14:02, Aaron Schmidt, , , , , , , Problems/Solutions, DI water loss
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Tuesday, February 09, 2021, 13:43: DI water flow completely stopped.
Control room contacted. DI water loss confirmed.
Tuesday, February 09, 2021, 13:52: DI water flow returned. |
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Friday, February 12, 2021, 12:16, Fernando Maldonado, , , , , , , Problems/Solutions, Grounding collimator cable from outside
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| Friday, February 12, 2021, 12:13: Since the collimator is not used, Carla and I installed a BNC short outside the cage. See picture. |
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Friday, February 12, 2021, 16:38, Fernando Maldonado, , , , , , , Failed, FEBIAD parameter scan - efficiency measurements - energy spread.
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Friday, February 12, 2021, 16:37: FEBIAD installed with mechanical calibrated leak
Friday, February 12, 2021, 16:38: Roughing.
Gas lines opened all the way to the sour. SV4 and SV5. |
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Tuesday, February 16, 2021, 14:52, Fernando Maldonado, , , , , , , Problems/Solutions, Leak checking gas lines.
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Vacuum side
Tuesday, February 16, 2021, 13:42: The gas lines inside have been check. The inlet of the calibrated leak was not tighten properly and hence the
large leak observed. FIXED. |
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Thursday, February 18, 2021, 10:47, Aaron Schmidt, , , , , , , , Optics loss / CANBUS failure.
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Thursday, February 18, 2021, 10:45: TPS:Q3 & the TSB CBC CANBUS controllers had failed yesterday, as well as a cable was incorrectly seated. This
was fixed this morning.
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Thursday, February 18, 2021, 11:03, Aaron Schmidt, , , , , , , Problems/Solutions, DI water pump configuration
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https://elog.triumf.ca/TIS/Test-Stand/847
There was a previous DI CU-LCW pump trip as per the above elog. The CU-LCW pump was configured this morning. The water pressure is set to
80 PSI as per the MCR. Any further can overload & trip the pump. |
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