| |
ID |
Date |
Author |
Target/No.# |
Source |
Station |
Module |
Target Oven W.O# |
Heat Shield W.O# |
Status |
Subject |
Text |
 |
|
|
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 shield | Tuesday, 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 operation | 1. Al corona shield installed over end
of the HV duct to suppress discharges from
the sharp edge of the duct. |
6x |
|
|
641
|
Wednesday, February 28, 2018, 11:50 |
Aaron Schmidt | | | | | | | | HV Test Np | New parts installed. Corona Shield, brackets,
and board/spark gap orientation.
Wednesday, February 28, 2018, 11:48: |
|
|
|
642
|
Thursday, March 01, 2018, 10:05 |
Carla Babcock | | | | | | | | HV tests with corona discharge problems solved | Turning up bias, no corona discharge at
60kV but a spark at 61.5kV bias, 31kV EZL,
-800V EE |
|
|
|
643
|
Tuesday, March 06, 2018, 10:55 |
Carla Babcock | | | | | | | | Trying HV without electronics | I have removed the resistor/varistor combinations
that go between the poles of the target and
tube heaters, and between those two supplies. |
|
|
|
644
|
Thursday, March 08, 2018, 17:47 |
Carla Babcock | | | | | | | | Change of electronics on target and tube power supplies | The resistor/varistor combinations across
the target + / -, tube + / - and target-
/ tube + have been remade and moved to the |
|
|
|
645
|
Friday, March 09, 2018, 08:57 |
Carla Babcock | | | | | | | | HV test with electronics moved to rack | First attachment: BIAS/EE/EZL = 63.25/-1.5/31
So far no issues.
Second attachment: BIAS/EE/EZL = |
|
|
|
646
|
Monday, March 12, 2018, 10:07 |
Aaron Schmidt | | | | | | | | HV Test w-gas | Monday, March 12, 2018, 09:45: Gas lines
opened. Leak rate set. Vacuum @ 1.16e-06T
Monday, March 12, 2018, 10:00: RGA |
|
|
|
647
|
Monday, March 12, 2018, 10:44 |
Carla Babcock | | | | | | | | Bringing up HV with gas on | Pressure:
Previous HV tests done at 2e-7
pressure.
Current pressure 1.1e-6 |
8x |
|
|
650
|
Tuesday, March 20, 2018, 09:14 |
Aaron Schmidt | | | | | | | Problems/Solutions | Optics issue | Tuesday, March 20, 2018, 09:11: TMS:Q5
& TMS:Q2 controllers require repair.
Unable to hold a negative voltage. |
|
|
|
651
|
Wednesday, March 21, 2018, 14:11 |
Fernando Maldonado | | LP-FEBIAD | | | 395530-3 | 42752-2 | In progress | Test FEBIAD | Tests on coil, temperature and the use
of silver bolts.
(3) Vented silver bolts on the TBHT |
10x |
|
|
652
|
Thursday, March 29, 2018, 10:58 |
Carla Babcock | | | | | | | | | Started with Anode at 25V and coil at 0A,
bias at 30kV. (attachment 1)
Ramped coil to 60A (0.4V) (attachment |
6x |
|
|
653
|
Wednesday, April 11, 2018, 10:19 |
Aaron Schmidt | | | | | | | | Pump down empty chamber | Wednesday, April 11, 2018, 10:19: Roughing |
|
|
|
654
|
Tuesday, April 17, 2018, 09:59 |
Aaron Schmidt | | LP-FEBIAD | | | 41790-9 | | | Test FEBIAD | New assembly & target. Same silver
bolts.
Tuesday, April 17, 2018, 09:56: Roughing. |
|
|
|
655
|
Tuesday, April 17, 2018, 11:02 |
Aaron Schmidt | | | | | | | Done | Roughing pump issue. | Tuesday, April 17, 2018, 10:57: Vacuum
not coming down. @ 1.514T . Backing valves
have been closed. |
|
|
|
656
|
Thursday, April 19, 2018, 12:55 |
Fernando Maldonado | | | | | | | Done | Re-wiring Anode PS | Thursday, April 19, 2018, 12:52: Pin J1
was reconnected into the anode power supply.
All jumpers were put back to remote control. |
|
|
|
657
|
Friday, April 20, 2018, 13:20 |
Carla Babcock | | | | | | | Done | BIAS* fan sounds like it is dying | 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. |
|
|
|
659
|
Monday, April 30, 2018, 12:07 |
Aaron Schmidt | | LP-FEBIAD | | | 41790-9 | 42752-5 | In progress | Test ready | Ready for C-seals or FEBIAD work
Monday, April 30, 2018, 12:05: Roughing.
Monday, April 30, 2018, 13:11: Turbo |
|