 Sat Apr 10 12:15:54 2021, OH, TD, Saturday 10 April 16x
|
12:37 DAQ found crashed. Had crashed at some time following 7:50am following previous statistics update
Unable to recover the FEEs so forced to power cycle
Following power cycle statistics much improved from yesterday.
|
|
Tue May 4 13:53:22 2021, OH, TD, Tuesday 4 May 7x
|
NH has re-checked alignment of AIDA adaptor PCBs cf. Elog:290
|
|
Fri May 21 07:03:50 2021, OH, TD, Friday 21 May 08:00-16:00 9x
|
08:00 OH and TD take over
Current settings p+n sides at 0xc
DSSD1 n+n sides 0x20 on ASICs 1-3 and 0x64 on ASIC 4
|
|
Wed Jun 2 14:53:05 2021, OH, TD, Merger/Tapeserver issues after reboot of aida-3 6x
|
On 01/06/21 aida-3 was rebooted as the graphical user interface had frozen.
We were also unable to connected to MIDAS via ssh port forwarding.
|
|
Fri May 13 07:36:18 2022, OH, TD, Friday 13 May 35x
|
08:36 DAQ Still running smoothly
Currently on run R1_328
At current data rates we have just over 4 days of space left on the current disk
|
|
Mon Jun 20 09:26:23 2022, OH, TD, Monday 20 June 11x
|
10:26 MACB HDMI for AIDA03 and AIDA04 reseated.
Merger and DAQ restarted - All happily sending data
Has been running for 10 minutes with no WR errors.
|
|
Wed May 12 06:59:55 2021, OH, RDP, Wed 12 May 08:00-16:00
|
08:00 While the rates appeared to have quietened around 7am they are back to their previous rate now.
They still seem to be working on the setting. Implant rate in AIDA about 8 per spill. Thick degrader is still in place
|
|
Tue May 18 06:50:53 2021, OH, PP, Tuesday 18th May 08:00 - 16:00 6x
|
08:00 OH Takes over
Statistics still look good from yesterday. Rate is still down.
|
|
Wed Apr 6 10:09:21 2022, OH, NH, TD, Wednesday 6 April 6x
|
DSSSD bias OFF. DAQ STOPped
Attachment 6 FEE64 temps OK
|
|
Thu Apr 7 12:42:14 2022, OH, NH, TD, Thursday 7 April 8x
|
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
|
|
Wed May 11 07:04:13 2022, OH, NH, TD, Wednesday 11th May 9x
|
08:00 Overnight at some point it appears that aida14 has stopped producing any ASIC data
It is currently sending data pause requests and data push requests but nothing else - attachment 1
telnet into aida14 and run top to see what the current state of the FEE is. AIDAExec currently using 0% CPU usage.
|
|
Tue Nov 12 13:22:19 2019, OH, NH, CA, AIDA09 Replacement
|
ASIC 1 on FEE9 was not producing signals.
A new HDMI cable was installed but still no signals.
|
|
Wed Oct 27 15:12:50 2021, OH, NH, Noise tests - 27th October 6x
|
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.
|
|
Tue Mar 1 08:29:19 2022, OH, NH, Findings from the upgrade to centos7 from SL6
|
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 |
|
Wed Mar 2 16:00:01 2022, OH, NH, Noise tests - 2nd March
|
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.
|
|
Thu Mar 3 08:45:03 2022, OH, NH, AIDA Noise and grounding tests 3rd March 8x
|
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
|
|
Fri Mar 4 08:40:36 2022, OH, NH, AIDA Noise and grounding tests 3rd March - Results 9x
|
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 |
|
Sat Mar 5 10:43:45 2022, OH, NH, Grounding and noise tests 4th-5th March Summary 13x
|
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 |
|
Fri Apr 8 08:59:42 2022, OH, NH, Friday 8th April 11x
|
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
|
|
Sat Jun 18 09:46:57 2022, OH, NH, Friday 17th June 23x
|
Summary of the day:
Small improvements were made throughout the day but by far the biggest change to the rate in the FEEs came from disabling the waveforms
This was done by setting ADC con
|