 Wednesday, February 28, 2018, 11:50, Aaron Schmidt, , , , , , , , HV Test Np 
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New parts installed. Corona Shield, brackets, and board/spark gap orientation.
Wednesday, February 28, 2018, 11:48: Power on. Ready to test
Wednesday, February 28, 2018, 14:00: BIAS / EZL / EE @ 30 / 13 / 1.5 kV |
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Thursday, March 01, 2018, 10:05, Carla Babcock, , , , , , , , HV tests with corona discharge problems solved
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Turning up bias, no corona discharge at 60kV but a spark at 61.5kV bias, 31kV EZL, -800V EE
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Tuesday, March 06, 2018, 10:55, Carla Babcock, , , , , , , , Trying HV without electronics
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I have removed the resistor/varistor combinations that go between the poles of the target and tube heaters, and between those two supplies. I tested
all the components to make sure they were still working after the sparks - for the record the varistors clamp at 23V, not 33V as implied by the schematic.
Tuesday, March 06, 2018, 10:48 BIAS/EE/EZL = 59.5/-1000/29.5 There was some kind of spark, the current on the bias supply went up to |
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Thursday, March 08, 2018, 17:47, Carla Babcock, , , , , , , , Change of electronics on target and tube power supplies
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The resistor/varistor combinations across the target + / -, tube + / - and target- / tube + have been remade and moved to the back of the power supplies
to limit the corona discharges at higher voltages. Pictures attached. |
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Friday, March 09, 2018, 08:57, Carla Babcock, , , , , , , , HV test with electronics moved to rack
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First attachment: BIAS/EE/EZL = 63.25/-1.5/31 So far no issues.
Second attachment: BIAS/EE/EZL = 64.25/-1.5/32 Slight spark - bias current jumped from 40uA to 88uA and vacuum jumped from 2e-7 to 2e-6... Steerers
went off. |
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Monday, March 12, 2018, 10:07, Aaron Schmidt, , , , , , , , HV Test w-gas
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Monday, March 12, 2018, 09:45: Gas lines opened. Leak rate set. Vacuum @ 1.16e-06T
Monday, March 12, 2018, 10:00: RGA on
Monday, March 12, 2018, 10:07: RGA off. Manually shut off power as well |
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Monday, March 12, 2018, 10:44, Carla Babcock, , , , , , , , Bringing up HV with gas on 8x
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Pressure:
Previous HV tests done at 2e-7 pressure.
Current pressure 1.1e-6 (see previous entry for RGA stats) - first attachment shows source
gas setup. Argon, neon and He leaks all on.
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Tuesday, March 20, 2018, 09:14, Aaron Schmidt, , , , , , , Problems/Solutions, Optics issue
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Tuesday, March 20, 2018, 09:11: TMS:Q5 & TMS:Q2 controllers require repair. Unable to hold a negative voltage.
+ @ 680V
- @ 0V (Should be 680V as well) |
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Thursday, March 29, 2018, 10:58, Carla Babcock, , , , , , , , 6x
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Started with Anode at 25V and coil at 0A, bias at 30kV. (attachment 1)
Ramped coil to 60A (0.4V) (attachment 2)
Ramped bias to 51kV, but then TP6 turned off and there was a momentary 0.2A decrease in the TGHT current. No spike in BIAS current seen, maybe |
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Wednesday, April 11, 2018, 10:19, Aaron Schmidt, , , , , , , , Pump down empty chamber
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| Wednesday, April 11, 2018, 10:19: Roughing |
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Tuesday, April 17, 2018, 11:02, Aaron Schmidt, , , , , , , Done, Roughing pump issue.
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Tuesday, April 17, 2018, 10:57: Vacuum not coming down. @ 1.514T . Backing valves have been closed.
TSG:CG1A @ 1.515T
TSG:CG1B @ 1.529T. |
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Thursday, April 19, 2018, 12:55, Fernando Maldonado, , , , , , , Done, Re-wiring Anode PS
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Thursday, April 19, 2018, 12:52: Pin J1 was reconnected into the anode power supply. All jumpers were put back to remote control.
NOTE: the cable EXTLKT is still not connected. I will ask Carla about this one.
Thursday, April 19, 2018, 18:00: Cable EXTLKT connected. |
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Friday, April 20, 2018, 13:20, Carla Babcock, , , , , , , Done, BIAS* fan sounds like it is dying
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The fan in the EZL power supply is making a terrible noise - keep an eye on it, it sounds like it might give up soon.
Monday, April 23, 2018, 10:47: The back panel was opened. Original entry stated EZL power supply issue. Corrected to BIAS PS. High voltage
group notified. Fan replacement required. |
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Tuesday, May 22, 2018, 08:48, Anders Mjos, , , , , , , Problems/Solutions, TSG:TP1A not running
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Pump found off on Tuesday morning.
Tuesday, May 22, 2018, 08:40: Starting TP1A
Tuesday, May 22, 2018, 08:47: TP1A at speed |
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Thursday, May 24, 2018, 08:38, Anders Mjos, , , , , , , Problems/Solutions, Venting beamline for IG6 replacement
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Thursday, May 24, 2018, 08:38: TPs stopped
Thursday, May 24, 2018, 09:18: Venting
Thursday, May 24, 2018, 14:30: IG6 replaced (second attempt) by Anthony. System pumping down |
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Thursday, May 24, 2018, 15:28, Anders Mjos, , , , , , , Problems/Solutions, Reconfigured FEBIAD coil for testing new source tray
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| Thursday, May 24, 2018: Configured coil to be (-) E&F, (+) G&H. Water should be supplied to both terminals in either configuration. |
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Monday, June 04, 2018, 16:02, Anders Mjos, , , , , , , Problems/Solutions, MB1 timeout
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Mass separator magnet timed out. Tried reconfigure. Called Kyle from controls who power cycled the CANbus card. This resolved the issue
(From the Source tray swap out.) - AS
Tuesday, June 05, 2018, 11:25: BIAS / EZL / EE @ 52 / 24 / 2.8 kV. SPARK *knocked out optics, magnet & Turbo TMS:TP6. IV4 closed/opened/reset. |
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Wednesday, June 06, 2018, 14:01, Aaron Schmidt, , , , , , , Problems/Solutions, Emittance scanner (E-rig) communication issues.
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Wednesday, June 06, 2018, 13:50:
It was noted yesterday during the TM2 Source HV tests that the E-rig was not running accordingly through the beam.
Upon turning on the PS, there a 45 second or so delay before the needle drops to the right at +500V and the PS no longer responds. (similar issue |
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Thursday, June 07, 2018, 09:21, Aaron Schmidt, , , , , , , Problems/Solutions, Pump down empty chamber. Anode check
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TM2 Source tray still in.
Thursday, June 07, 2018, 09:20: Roughing.
Thursday, June 07, 2018, 12:42: Turbo pumps started. |
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Tuesday, June 12, 2018, 11:38, Aaron Schmidt, , , , , , , In progress, Source Tray re-installation
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Re-installation of the ISAC Test Stand Source tray. The TM2 ST was removed.
Tuesday, June 12, 2018, 10:15: Disconnect Optics Tray. Set blocks.
-Continue with removal of TM2 Tray |
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