 Sun May 15 07:40:52 2022, OH, Sunday 15th May 08:00-16:00 10x
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08:40 FEE Temperatures ok - attachment 1
FEE statistics - Attachment 2
Bias and leakage currents ok - attachment 3
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Tue May 17 06:58:51 2022, OH, Tuesday 17th May 6x
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08:00 Still have beam for the time being.
Currently on file R4_2049
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Sun Jun 19 12:36:10 2022, OH, Sunday 19th June
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Yesterday the sum/inverter was found to be a considerable source of noise in the system.
Plugging it into an oscilloscope this morning it was clear there was a Vpp 17mv 60kHz sin wave in its signal - attachment 1 yellow trace
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Thu Jun 23 06:56:02 2022, OH, Thursday 23 June 08:00-16:00 11x
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07:56 Taken over from AM
Current White Rabbit Error status:
Base Current Difference
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Fri Jun 24 06:56:06 2022, OH, Friday 24 June 008:00-16:00 16x
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07:56 Took over from AM. No issues reported overnight
Stats ok - attachment 1
Temperature ok - attachment 2
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Mon Jun 27 06:45:22 2022, OH, Monday 27th June 08:00-16:00
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07:45 Spoke to David and the beam has been gone since about 05:30
Reason for the loss of beam is a vacuum issue before the FRS
They are waiting for the experts
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Fri Jun 14 15:00:47 2024, Norah , Muneerah, 16:00-20:00 Friday 14 June 13x
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Everything appears to be running smoothly. Attachments 1-4 were taken around 16:00
DSSSD Bias & Leakage Current - Check: OK (see attachment 1)
FEE64 Temperature - Check: OK (see attachment 2) |
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Fri Apr 26 07:01:26 2024, Norah, 08:00 - 16:00 Friday 26 April
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10:00 Checks:
All seems smooth.
DSSD bias and leakage current ( Attachment 1) |
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Sat Apr 27 15:13:06 2024, Norah, 16:00 - 00:00 Saturday 27 April 15x
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14:50 Checks
Leakage current is 20.021 and HV status is Max Voltages ! Is it normal ? - attachments 1
It is quite warm at GSI today and this may be a temperature effect. Hopefully will go down latter in the day (Marc). Any way let's kep an |
 Fri Nov 1 14:17:15 2019, Nic, Patrick, Reply: WR Timestamps
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> > All 12 FEEs have valid WR Timestamps
> > Had to powercycle aida09 once as before raw readout was displaying upper 12 bits of WR timestamp as 0. Unsure of other method.
> >
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Thu Nov 7 10:22:26 2019, Nic, Patrick, Reply: WR Timestamps
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> > > All 12 FEEs have valid WR Timestamps
> > > Had to powercycle aida09 once as before raw readout was displaying upper 12 bits of WR timestamp as 0. Unsure of other method.
> > >
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Tue Mar 26 14:58:09 2019, NH, VP, How to reset merger
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If the merger doesn't show "xfer Links => Merger" at the top, it is probably the merger setting has been corrupted somehow. This is
how to reset it
If you go to the web page from which you started the Merge and TapeServer |
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Tue Mar 12 16:16:49 2024, NH, TD, JB, HA, Summary of DSSSD Biasing 12.03
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DSSD#1 undergoes a breakdown at 90V, two of the three wafers show this
- The adapter PCBs themselves have no breakdown at 100V, indicating the issue is internal to the snout
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Fri Dec 20 12:04:03 2019, NH, TD, Friday 20 December 2019 7x
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Fig 1: DSSD Leakage currents ok
Fig 2: FEE Temps ok
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Sat Apr 24 13:25:23 2021, NH, TD, AIDA FEE64 crash log for S460
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https://docs.google.com/spreadsheets/d/1CyL5L-WLsh9fsS7CN989GC3ktqiPQOkG8YIDJrrGxYA/edit#gid=0 |
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Tue Aug 17 12:39:25 2021, NH, TD, AIDA Noise 16x
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Investigate noise situation of AIDA (no DSSSDs connected)
Figs 1-6: Waves, Pulser Peaks + Widths *before* any changes
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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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Tue May 31 09:05:00 2022, NH, TD, Tuesday 31 May
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DSSD stack will be as follows
1 3208-7 1019 125 upstream
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Mon Jul 8 16:02:52 2019, NH, PJCS, Aida 28/6/2019 - WATER OFF
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It occurs to to wonder if there is now water inside the modules. If the metal of the cooling plates is damp on the outside then it is safe to assume
there is water on the inside too . Can I suggest that one of the modules is dismounted, disassembled and checked?
Patrick |
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Wed Feb 19 10:58:29 2020, NH, PJCS, Report: aida09 Kernel Panic & Lost WR
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> aida09 crashed over the weekend and automatically rebooted.
> After the reboot the WR timestamp sent to the merger is in the future and hence incorrect
>
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