 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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Wed Mar 2 16:00:01 2022, OH, NH, Noise tests - 2nd March
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An interesting find with the new sum inverter is that with the pulser at default settings the pulser peak on the n+n side is above the range of the ADC.
We have checked signals from the sum inverter and pulser and both are equal in magnitude.
We therefor determine it is over range as the charge is spread over 4 FEEs vs 12 on the p+n side.
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Wed Mar 2 09:08:44 2022, OH, DAQ Status 2nd March 2022
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DAQ was found yesterday with none of the FEEs reporting any good events on any FEE - attachment 1
Temperature menu is still responsive and all FEEs report a temperature
Looking at the white rabbit timestamps aida09 has a gibberish timestamp - attachment 2
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 Wed Mar 2 10:05:13 2022, OH, DAQ Status 2nd March 2022
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> DAQ was found yesterday with none of the FEEs reporting any good events on any FEE - attachment 1
> Temperature menu is still responsive and all FEEs report a temperature
> Looking at the white rabbit timestamps aida09 has a gibberish timestamp - attachment 2
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Tue Mar 1 08:29:19 2022, OH, NH, Findings from the upgrade to centos7 from SL6
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Required packages not included as default
csh (For running MIDAS scripts)
xinetd (Runs the rdate server for the FEEs)
Telnet
(Communication with the FEEs)
dhcp
Configuration changes
FEEs uses NFS2 which is no longer enabled by
default
Must edit config in /etc/nfs.conf to uncomment the following lines:
[nfsd]
vers2=y
/etc/xinetd.d/time-stream |
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Wed Feb 16 10:32:52 2022, PJCS, AIDA software changes and some suggestions
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The Pi console monitor program now outputs a full date/time to file for each line of report.
The System Wide Checks has been upgraded to include a check of the PLL lock monitor counters. A baseline is taken when the software starts, or
at the users command, then subsequent operation of the command compares the current counter value with the baseline. There are two PLLs on the pcb, LMK3200, |
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Fri Feb 11 12:09:24 2022, NH, Fri 11 Feb AIDA Work
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Use beam break between FRS experiments to finalise getting AIDA testable for PJCS etc.
USB hubs reconnected - all 16 ttyUSBs seem to be visible now
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Tue Feb 1 15:00:28 2022, NH, AIDA CentOS 7 Startup
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Starting up AIDA on CentOS 7 to confirm things work (based on some CARME experience)
NFS settings:
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Fri Oct 29 23:00:04 2021, NH, Ground cable information
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For future refinement of the AIDA ground cables using copper bus bar or similar:
Thin cable (from AIDA FEEs to common connection point)
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Fri Oct 29 10:49:01 2021, OH, Noise tests - 28th October -29th October 24x
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Plan for the day was to connect a mechanical ground to the FEEs connected to DSSD0 1, 2, 3, 4, 9, 10, 11 and 12
This was done by connecting thick copper cable to the mechanical ground wires on the AIDA frame (These ground wires are connected to the platform ground |
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Wed Oct 27 15:12:50 2021, OH, NH, Noise tests - 27th October 6x
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Began by installing the triple.
Only the upstream detector was connected to the FEEs the downstream detector cables were left loose. The two detectors are isotolated though.
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Thu Oct 21 16:18:51 2021, OH, FEE and Adaptor board groundings
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During investigations into the noise today by NH and OH a couple of findings were made on the grounding of the FEEs and Adaptor boards.
- The adaptor boards have no connection to the FEE ground over the ERNI connector
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Tue Oct 26 16:08:46 2021, NH, FEE and Adaptor board groundings
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> During investigations into the noise today by NH and OH a couple of findings were made on the grounding of the FEEs and Adaptor boards.
>
> - The adaptor boards have no connection to the FEE ground over the ERNI connector
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Thu Oct 21 09:33:08 2021, OH, Noise tests - 21st Oct 2021
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Pulser was left on overnight with the bias filters on
First plot is FEE14 not FEE8
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Thu Oct 21 09:08:41 2021, OH, MIDAS start up messages
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Wed Oct 20 13:26:08 2021, NH, OH, AIDA Noise + Filtering 6x
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Turn on AIDA (SL6) to investigate noise situation and impact of new RC filters on bias input
Current setup:
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Tue Oct 19 16:17:49 2021, OH, AIDA-gsi server to centos 7
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Following advice of CU have updated the server to centos 7.
To do this a new 500GB SSD was purchased and installed in the enclosure and a clean install of centos7 was installed to this.
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Mon Oct 18 14:20:32 2021, OH, Top bar launchers
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launcher1
TclHttpd @8015 for AIDA
/MIDAS/Linux/startup/HTTPD
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Mon Oct 18 13:03:23 2021, OH, DHCPd.conf backup
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