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ID Date Author Target/No.# Sourcedown Station Module Target Oven W.O# Heat Shield W.O# Status Subject Text Attachments
  614   Wednesday, November 15, 2017, 10:56 Aaron Schmidt      Problems/SolutionsTMS:TP6 replacementTurbo pump TP6 requires replacement.
Wednesday, November 15, 2017, 09:55:
Turbo (TP2) off. Ion gauge off.
  
  616   Monday, December 04, 2017, 08:29 Aaron Schmidt      Problems/SolutionsPower outagePower outage over the weekend. Reboot PLC
and systems.
Monday, December 04, 2017, 08:22:
 20171205_103324.jpg 
  619   Thursday, December 21, 2017, 15:12 Anders Mjos       Powered down devicesPowered down vacuum gauge and turbo pump
controllers
  
  620   Tuesday, January 02, 2018, 09:18 Anders Mjos      Problems/SolutionsStarting systemTuesday, January 02, 2018
Cycled power for TCSIOC and PLCIOC
TP2 and TP6 started
  
  621   Monday, January 22, 2018, 09:04 Aaron Schmidt      DonePower outage & Controller replacement.Computer, TS, epics, restarted. Power checks
Monday, January 22, 2018, 09:00:
ISAC PLC TLCIOC Restarted. 
  
  622   Friday, January 26, 2018, 11:10 Aaron Schmidt      DoneHelium tank replacementFriday, January 26, 2018, 11:08: New Helium
tank installed inside the Test Stand.
-The 'Full' tag remains. The He tank
  
  626   Wednesday, January 31, 2018, 09:53 Aaron Schmidt    (Blank)42752-3DoneWire moved.Wednesday, January 31, 2018, 09:50: A wire
(B - F) was too close (Almost touching) to
the EZL and had visible sparks during HV
  
  628   Monday, February 05, 2018, 09:17 Aaron Schmidt      Problems/SolutionsEpics lossMonday, February 05, 2018, 09:10: the epics
program was in 'White-out'. Turbo pumps tripped.
Unplug, re-plug PLC.
  
  629   Wednesday, February 07, 2018, 08:46 Aaron Schmidt       BIAS Power supply installationWednesday, February 07, 2018, 08:40: A
75 kV Glassman power supply was installed
in the rack for use in further HV testing.
 BIAS_PS_off_top_switch.jpgBIAS_PS_70kV_rear_bottom.jpgBIAS_PS_70kV_Front_bottom.jpg 
  630   Thursday, February 08, 2018, 14:44 Carla Babcock      DoneConditioning station power supply integrated into EPICSThe 75kV power supply is now in EPICS under
the usual TSG:BIAS controls. The upper limit
has been set to 70kV to protect the transformer.
  
  631   Thursday, February 08, 2018, 16:54 Carla Babcock       EZL strange behaviourThursday, February 08, 2018, 16:54
Testing the HV bias I found that
the einzel lens was behaving strangely. When
  
  632   Friday, February 09, 2018, 08:57 Carla Babcock       TSGBIASSAFETY ok interlockFriday, February 09, 2018, 08:25   
Disconnected the AC power chain from the
old bias supply but now cannot turn on the
  
  633   Tuesday, February 13, 2018, 12:17 Carla Babcock       Ramping up bias to 60kV with conditioning station supplyRamped up to 60kV with the new power supply,
same as what we did last time with the standard
test stand bias supply (see entry #627 ).
 vacuumbias_13022018.PNG 
  634   Tuesday, February 13, 2018, 16:47 Carla Babcock       Ramping to 63kV - some sparksSparks at 62kV on the bias.
Turned it down, turned it back up
and got a spark at 60kV.
  
  635   Friday, February 16, 2018, 15:21 Carla Babcock       Cleaned HV cage - trying bias againI vacuumed inside the HV cage, though it
has many small areas that are difficult to
access so I am not sure how great a job I
  
  636   Monday, February 19, 2018, 08:30 Carla Babcock       TMSTP6 offFound TMSTP6 off, restarted it, seems fine
now (drawing 0.8A)
  
  637   Monday, February 19, 2018, 14:01 Carla Babcock       Attempts to get to higher voltages, summarized.The test stand holds up to 63kV, however
at voltages over 54kV there are small discharges,
rising to a continuous level around 60kV.
  
  638   Tuesday, February 20, 2018, 09:04 Carla Babcock       Trying HV with rubber corona shieldTuesday, February 20, 2018, 09:01: Sparks
at 62.5kV after a couple minutes. Sounds
like they were in the EE spark gap but don't
  
  639   Friday, February 23, 2018, 08:50 Aaron Schmidt       New Al Corona Friday, February 23, 2018, 08:50    
  640   Monday, February 26, 2018, 09:13 Carla Babcock       Running list of changes to the ISAC test stand for >60kV operation1. Al corona shield installed over end
of the HV duct to suppress discharges from
the sharp edge of the duct.
 6x 
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