 Fri May 6 09:31:41 2022, TD NH, Friday 6 May 33x
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10:30 DAQ appears to have stopped
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Wed May 4 16:50:04 2022, NH, AIDA 4th May
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bPlas has been mostly cabled in now
Reseat LAN cable (AIDA Switch -> AIDA-3) and reachieve 1 gbit/s speed as needed.
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Mon May 2 13:08:49 2022, NH, AIDA Updates 2 May
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The snout endcap has been sealed with new copper tape over the red tape
Observe significant drop in leakage current on DSSD #2 down to 7 uA (about 0.5 uA above DSSD #1) as it looked when the black cloth was on
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 Tue May 3 14:15:17 2022, NH, AIDA Updates 2 May
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PAUSE/RESUME stats are dominated by 2x FEE64s - aida07 and aida16
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Mon May 2 09:52:20 2022, OH, Shifter checklist 2022
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Every 30 minutes:
- Reload statistics (Web browser tab screen 1, workspace 3)
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Thu Apr 28 18:45:09 2022, NH, Alpha Background Run
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Runs are in /TapeData/BGAPR22 located on 8TB disk "SecondDrive" (N.B. 2A experiment is using ThirdDrive)
Old runs and test files were removed from disk. Left is an unknown S481 folder (fibre implant test?) and Patrick
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Wed Apr 27 15:47:46 2022, NH, HA, SA, CJ, AIDA 27 Apr 22 7x
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Remount snout in S4 (photos to come)
Alignment with DEGAS OK but a bit short... DEGAS platform will be brought 31 mm closer to AIDA by rail adjustment
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Fri Apr 8 08:59:42 2022, OH, NH, Friday 8th April 11x
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09:59 Noticed that the right hand ribbon cable for aida07 was offset vertically by 1. i.e. Only 1 of the 2 rows of pins in. Unbiassed detectors and reconnected.
Rebiassed detectors - leakage current on DSSD2 increased to 9.96uA - Attachment 1
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Thu Apr 7 12:42:14 2022, OH, NH, TD, Thursday 7 April 8x
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Re-assembled triple snout re-installed on the AIDA stand - DSSSD ribbon cables and grounds re-connected.
FEE64 adaptor PCB LKs per https://elog.ph.ed.ac.uk/DESPEC/409
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Wed Apr 6 10:09:21 2022, OH, NH, TD, Wednesday 6 April 6x
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DSSSD bias OFF. DAQ STOPped
Attachment 6 FEE64 temps OK
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Tue Apr 5 12:46:52 2022, TD, MSL type BB18(DS)-1000 triple - cable lengths
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OH/NH disassembling current AIDA triple snout and DSSSD stack.
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Tue Apr 5 08:52:16 2022, TD, Tuesday 5 April 6x
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DSSSD bias OFF. DAQ STOPped
Attachment 1 FEE64 temps OK
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Mon Apr 4 09:19:49 2022, TD, Monday 4 April 12x
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AIDA adaptor PCB config - all LKs removed *except*
aida04 & aida08 LK1
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Sun Apr 3 10:56:11 2022, TD, Sunday 3 April 35x
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all system wide checks OK *except* aida10 failed ADC calibration
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Sat Apr 2 10:42:49 2022, TD, Saturday 2 April 21x
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11.10 Found aida08 not running - merger/TapeServer stalled
Restart required power cycle of all FEE64s
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Wed Mar 9 10:15:56 2022, NH TD, Wednesday 9 March - noise tests contd. 38x
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11.15 - S4 is currently closed no access
If access possible (should be) plan is
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Tue Mar 8 10:26:56 2022, TD NH, Tuesday 8 March 2022 40x
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11.25 System wide checks OK except aida06 clock fail status 6 - attachments 1-13
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Mon Mar 7 12:20:26 2022, NH, TD, AIDA Grounding Checks Mon 7 Mar 14x
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Remove all DSSD ribbon cable braid ground from FEE64s to check n+n ground loops
Removing all on n+n side only and test resistance to ground: 4, 6 and 8 show continuity to ground, 2 shows no connection (braid ring terminal to copper |
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Sat Mar 5 10:43:45 2022, OH, NH, Grounding and noise tests 4th-5th March Summary 13x
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Tests performed
After leaving overnight noticed the pulser was not fully inserted into aida09
Little change in rates
observed in 9 but otherwise nothing else
Connected bias of aida02 (n+n ground) to aida06 (n+n ground) and likewise 4-8
No
change observed in rates
Also tested covering the snout in light tight material
No Changes
Unplugged |
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Fri Mar 4 08:40:36 2022, OH, NH, AIDA Noise and grounding tests 3rd March - Results 9x
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Grounding implemented
Each FEE given direct connection to heavy duty earth bar via adaptor board lemo ground
Earth bars
are then connected to platform ground on AIDA frame
Photo of grounding - attachment 1
Improvements not as large as expected from
previous experience though
Particularly in the n+n side where widths still appear awful
While implementing the |
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Thu Mar 3 08:45:03 2022, OH, NH, AIDA Noise and grounding tests 3rd March 8x
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Pulser spectra
Changes to the nn pulser circuit yesterday have improved the peak widths on the p+n side
p+n peak widths
averact around 100 channels
n+n around 1000 at 0xa threshold
n+n 1.8.L spectra - attachment 1
p+n 1.8.L spectra attachment
2
p+n peak widths
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