 Mon Feb 21 17:26:19 2022, JM, CB, SHB, OH (remotely), Beam ON run 53 9x
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21/2/22 16:00
Call from main control room, beam is ON, probably has been for several hours judging by rate on xy total plot.
Changes made to online monitoring code by OH, include setting to only 1 DSSD, correct offsets from the pulser walkthrough, offline analysis capabilities |
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Mon Feb 21 12:10:47 2022, RSS, JG, Alpha background run50
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Beam OFF. Run started 20/2/22 18:42
System checck OK, except white rabbit all fail
Temperatures OK |
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Mon Feb 21 10:59:48 2022, RSS, JG, Alpha background run50
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Beam OFF. Run started 20/2/22 18:42
System checck OK, except white rabbit all fail
Temperatures OK |
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Mon Feb 21 09:07:37 2022, RSS, JG, Alpha background run50
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Beam OFF. Run started 20/2/22 18:42
System checck OK, except white rabbit all fail
Temperatures OK |
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Mon Feb 21 08:05:45 2022, RSS, JG, Alpha background run50
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Beam OFF. Run started 20/2/22 18:42
System checck OK, except white rabbit all fail
Temperatures OK |
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Sun Feb 20 22:04:21 2022, JM, CB, Alpha Background run 50
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Beam OFF. Run started 20/2/22 18:42
Fast comparator threshold HEC set to 0xff for all fees and asics to combat high energy noise bursts.
Electron cooler scalar plugged back into aida03 ~3000 per sec. |
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Sat Feb 19 20:08:43 2022, JM, CB, Beam ON run 49 6x
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Run started 19/2/22 21:05. Beam ON
Temperatures OK
System wide checks OK - white rabbit fails on all. |
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Sat Feb 19 14:51:58 2022, JM, CB, Burst high energy noise
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Noticed bursts of high energy noise on aida01 and aida02 during run 47 and 48.
Good events rate jumps from 10-20k range to 250k. ADC data items rate jumps from 0-1 to 2k. Data rate being written increases to ~2500 kb/s from
~20 kb/s |
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Fri Feb 18 20:31:33 2022, JM, CB, Alpha Background run 48
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Alpha background started with beam ON - run47. Run started 16:49 18/2/22 (beam subsequently found to be OFF)
Beam energy 4 keV, beam lifetime ~ 100 ms
Noticed aida01 and aida02 were showing increased good event rates to ~250,000, effect seen on spectrum browser and data writing rate increased |
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Fri Feb 18 13:03:02 2022, RSS, ML, CB, Alpha background run46 11x
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14:00
Check Leakage current: (see attachment 4) |
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Fri Feb 18 11:07:52 2022, RSS, ML, CB, Alpha background run46 11x
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12:00
Check Leakage current: (see attachment 4) |
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Fri Feb 18 08:58:08 2022, RSS, ML, CB, Alpha background run46 11x
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10:00
Check Leakage current: (see attachment 2) |
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Thu Feb 17 18:19:16 2022, JM, CB, SD, Alpha Background run 46
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Both GSI vacuum group and edinburgh ion gauges OFF
Fees power cycled. All system checks OK.
Writing to file, alpha background overnight. |
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Thu Feb 17 16:26:27 2022, JM, CB, SD, Gauges OFF, Pulser Movement tests 7x
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Edinburgh group ion gauge turned OFF -> decrease in leakage current from 10.05 uA to 6.5 uA
GSI vacuum group ion gauge turned OFF -> decrease in leakage current from 6.5 uA to 3.63 uA
GSI large ion pump turned ON -> no effect on leakage current |
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Thu Feb 17 15:09:40 2022, JM,CB,SD, Alpha background run44 8x
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16:09
Check Leakage current: (see attachment 1) |
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Thu Feb 17 13:12:19 2022, RSS, AG, Alpha background run43 11x
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14:00
Check Leakage current: (see attachment 1) |
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Thu Feb 17 08:31:07 2022, RSS, AG, Alpha background run43 11x
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09:15
Check Leakage current: (see attachment 2)
Check NewMerger tab: (see attachment 5) |
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Wed Feb 16 21:41:11 2022, JM, Run 43 Alpha Background 8x
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22:41
Check Leakage current: (see attachment 1) = 10.01 uA and falling
Check NewMerger tab: (see attachment 2) |
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Wed Feb 16 21:27:31 2022, JM, Cryring signals, Pulser tests, Waveforms 11x
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On 15/2/22 it was noted that the leakage current increases when the motors are moved IN. This is contary to tests conducted on 12/2/22 (elog 192) where
no increase was observed.
16/2/22: Servo motor and pneumatic used to move in by different differences with leakage current observed to increase linearly with distance |
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Wed Feb 16 15:27:53 2022, EM, JM, Run 41 Pulser tests 11x
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16:30
NOTE: Pulser is ON!
Check Leakage current: (see attachment 1) |