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 |
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 |
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. |
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. |
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. |
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, |
Thursday, January 21, 2021, 10:10, Fernando Maldonado, , LP-SIS, , , 44139-10, 44378-2, Done, Energy spread calibration - SIS with TBHT negatively biased
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Thursday, January 21, 2021, 10:05: Anodeless Negative Bias On Surface Ion Source, or ANBOSIS (still working on the acronym). installed to
test energy spread vs position.
The SIS allow a more forgiving operation while calibrating such that other sources can have these type of measurements. |
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 |
Friday, January 29, 2021, 09:13, Aaron Schmidt, , LP-SIS, , , 44139-10, 44378-2, In progress, TS settings ok.
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Friday, January 29, 2021, 09:11: CANBUS controller was replaced. Quick systems check ok. Sources, HV, & Optics all good.
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Monday, February 01, 2021, 08:38, Fernando Maldonado, , LP-SIS, , , 44139-10 , 44378-2 , Failed, Energy spread calibration
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Monday, February 01, 2021, 08:38 : The anode seems to be shorted but we can still test the amount of dispersion at the image position, and
correlate with energy spread.
Monday, February 01, 2021, 11:27: Bias/EZL/EE @ 30/0/1.5 kV. |
Thursday, February 04, 2021, 18:48, Fernando Maldonado, , LP-SIS, , , 44139-10, 44378-2 , Problems/Solutions, Energy spread calibration with SIS 6x
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The system was vented to make clearance on the waterlines as a very small continuous discharge was observed.
The inspection revealed some marks on the HS water line (sideview photo). From the the bottom and from real close (zoom and backview photo) the
marks are quite noticeable with shinny copper in the middle and dark circles around. |
Thursday, February 04, 2021, 19:22, Fernando Maldonado, , LP-SIS, , , 44139-10 , 44378-2, Done, Energy spread calibration with SIS
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See e-log entry: 884:
Thursday, February 04, 2021, 18:45: Roughing
Thursday, February 04, 2021, 19:13: Turbos on. |
Monday, February 08, 2021, 09:20, Aaron Schmidt, , LP-SIS, , , 44139-10, 44378-2, Failed, Energy spread calibration with SIS. No PE
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Re-salted. PE removed. EE Cleaned
Monday, February 08, 2021, 09:17: Roughing.
Monday, February 08, 2021, 09:46: TP1B on |
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. |
Wednesday, February 10, 2021, 09:49, Aaron Schmidt, , LP-SIS, , , 44691-8, 44378-2 / 44378-3, Failed, Energy spread calibration with SIS
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Note* target has a ring on the TGHT - Right leg. EE & PE placed. Target to HS OL - OK.
Wednesday, February 10, 2021, 09:37: Roughing.
Wednesday, February 10, 2021, 09:45: Bypass / Force applied on IG1 to test Anode. |
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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