 Friday, April 24, 2015, 12:25, Anders Mjos, , , , , , , Problems/Solutions, Backing line pressure high
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TSG:RP1 backing line pressure is >200 mT. An e-fault has been submitted to have the roughing pump replaced.
Friday, April 24, 2015, 13:13: Pump replaced by vacuum group. |
Tuesday, September 10, 2024, 16:24, Dave Neilson, TiC #24D, HP-SIS, ITW, TM3, 45447-27, 45235-25, , Back up target testing and conditioning 
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Tuesday, September 10, 2024, 16:21: Target installed in test stand by Brady
Tuesday, September 10, 2024, 16:21: roughed down and turbo pumps now on.
Tuesday, September 10, 2024, 20:27 Pressure at 4.9e-6, increasing TGHT TBHT to 580A/230A at 1A/30s |
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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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Wednesday, February 07, 2018, 08:46, Aaron Schmidt, , , , , , , , BIAS Power supply installation
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Wednesday, February 07, 2018, 08:40: A 75 kV Glassman power supply was installed in the rack for use in further HV testing.
-The 75kV power supply is linked into the keyed interlock system. The key & switch labelled BIAS/EZL will unlock it.
-The PS is currently not connected to the epics controls and can only be adjusted manually. |
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Wednesday, March 27, 2019, 11:01, Aaron Schmidt, , , , , , , Problems/Solutions, BIAS PS replaced. Test
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Wednesday, March 27, 2019, 10:25: BIAS @ 1 kV
952V - 548uA on controls readback - Scaling req'd
964V direct from the PS - 25 uA |
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Monday, February 19, 2018, 14:01, Carla Babcock, , , , , , , , Attempts to get to higher voltages, summarized.
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The test stand holds up to 63kV, however at voltages over 54kV there are small discharges, rising to a continuous level around 60kV. The best guess right
now is that these are coronal discharges coming from the end of the HV duct to the faraday cage. The only way to fix this would be to round out the edges
of the duct, or to move the duct farther away. Since I have heard small discharges in other places, we may need to make a variety of modifications. Things |
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Tuesday, May 28, 2013, 09:51, Anders Mjos, , , , , , , Problems/Solutions, Archivers restarted
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| COIL and ANODE data added to ISACT Data Archiver |
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Thursday, November 08, 2018, 14:13, Aaron Schmidt, , , , , , , , Ar & Ne gas bottle replacement.
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Thursday, November 08, 2018, 14:05: Fresh / recently calibrated Neon & Argon bottles installed.
Leak rates: Argon=2.02E-7 atm*cc/sec
Neon=1.75E-7 atm*cc/sec |
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Tuesday, December 17, 2024, 16:09, Dave Neilson, , , , , , , Done, Anode,TGHT, TBHT power supply investigation. Resolved
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Note, ground and HVC (high voltage common) are used interchangeably here.
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Tuesday, December 18, 2012, 12:51, Sebastian Raeder, , , , , , , , Anode powersupply connected to HV-common
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The anode PS is turned off and connected to HV common.
the Target is connected to a -18V PS at the center support (Feed through A) for a on/off test of ion suppression
NOTE: there is a shortcut target <--> HV gnd, most propably due to the thermocouple touching something after pumping. |
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Wednesday, December 12, 2018, 13:22, Aaron Schmidt, , LP-FEBIAD, , , 395530-3, 42752-5, In progress, Anode leak current check.
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Wednesday, December 12, 2018, 13:15: Power / Sources on.
Wednesday, December 12, 2018, 13:20: RGA on / set.
Wednesday, December 12, 2018, 13:29: BIAS / EZL / EE @ 30 / 13.5 / 1.5 kV. |
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Monday, December 17, 2018, 12:03, Aaron Schmidt, , LP-FEBIAD, , , 395530-3, 42752-5, , Anode leak current check.
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Monday, December 17, 2018, 12:01: Connected Multimeter through feedthroughs J & L. Blue wire removed.
To run TGHT, TBHT, Anode ONLY. HV will remain locked with yellow tape over the keyhole. Currently locked out.
Tuesday, December 18, 2018, 08:37: Power / sources on |
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Monday, October 15, 2018, 14:38, Aaron Schmidt, , , , , , , Problems/Solutions, Anode / Cathode PS to Negative
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Monday, October 15, 2018, 13:00-14:00 Anode / Cathode BIAS PS polarity reversed by John Chow.
PS: Negative |
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Thursday, July 12, 2012, 13:49, Anders Mjos, , , , , , , Problems/Solutions, Aluminum oxide found inside TSHSV1
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Aluminum oxide found inside TSHSV1 and the copper line to TSHUHV1.
SV1 replaced and copper line cleaned. |
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Monday, September 16, 2019, 10:05, Fernando Maldonado, , , , , , , Problems/Solutions, Alignment pin reinstalled
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Monday, September 16, 2019, 10:03: The rightmost alignment pin has been reinstalled (see picture attached). It was previously removed for Ferran's
test. |
 Wednesday, July 18, 2012, 14:08, Anders Mjos, , , , , , , Problems/Solutions, Air supply leak on manifold fixed
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Anders Mjos wrote:
Leak found on the Ne supply line. 1E-4 - 1E-5 range. Replaced fittings. Had to use one brass piece. |
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Tuesday, November 15, 2022, 15:32, Sam Gupta, , , , , , , , ATTS tantalum Bracket Heating test
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Heated up sample 01 for the second time and measured the temperature with increasing current. Used pyrometre to measure temperature and calibrated it
with the emmissivity values from cassidy |
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Friday, April 15, 2016, 16:07, Anders Mjos, , , , , , , Problems/Solutions, ANODE polarity switched to positive
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| to test the effect of extraction when biasing of the target. |
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Wednesday, April 20, 2016, 08:27, Anders Mjos, , , , , , , Problems/Solutions, ANODE polarity switched to negative
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Anders Mjos wrote:
to test the effect of extraction when biasing of the target. |
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Thursday, October 31, 2019, 13:22, Fernando Maldonado, , , , , , , Problems/Solutions, 9pin connector not fully in contact with baseplate
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Thursday, October 31, 2019, 13:20: After inspecting the interior, the 9 pin bracket was found not making full contact with the baseplate (pic attached).
After pushing it and re doing the bolts conctact works. |
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