 Thu Oct 31 16:43:03 2019, NH CA TD, Merger & MBS Performance 
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Testing merger with 3 DSSDs connected, with thresholds of 10 (slow comparator), 2 (HEC) and 255 (fast discriminator)
Merger handling rate of 1.6 million events per second comfortably. Forwarding to MBS fine.
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Thu Oct 31 15:24:35 2019, TD, waveform spectra issues? 12x
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Thu Oct 31 14:23:37 2019, TD, aida09 asic 1 no data readout?
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Thu Oct 31 10:33:34 2019, TD, [How To] Start TclHttpd server on Raspberry Pi
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1) Login to Raspberry Pi
ssh pi@nnrpi2
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Thu Oct 31 09:36:37 2019, TD, RIKEN LayOut directory
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Thu Oct 31 09:00:58 2019, CA, TD, NH, Thursday 31 October 14x
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10.05 DSSSD # 1-3 detector biases & leakage currents OK - see attachment 1
Ambient temperature +21.2 deg C, d.p. +3.4 deg C, RH 31.2%
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Wed Oct 30 11:51:08 2019, CA, TD, NH, Detector biasing
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12.51 - detector bias and leakage currents - detector 3 has no current
- other detectors ok
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Wed Oct 30 08:06:49 2019, CA, TD, NH, DSSSD stack 6x
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Ribbon cables fitted with kapton PCB couplers -> 3 isolated + 1 non-isolated for each cable length/DSSSD
Ribbon cable lengths:
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Mon Oct 28 17:02:11 2019, TD, AIDA @ DESPEC cable length estimates
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AIDA snout length 37cm (from end of AIDA snout support assembly)
downstream scintillator (assembly depth 1cm) 36cm
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Mon Sep 16 12:24:46 2019, NH, AIDA Monitoring
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https://docs.google.com/spreadsheets/d/1fZBybHodSvacUdKpDM_VKznqTrh49CKnqKVQVMEDWGs/edit?usp=sharing
A spreadsheet of ambient conditions and water temperature in S4 for AIDA.
Will show the distance to danger points (interlock shutdown and condensation on the pipes) |
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Fri Aug 16 15:09:05 2019, NH, Aida Waves (All FEEs) 12x
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Included waves for all 12 FEEs
FEES 1, 5, 9 all show this HF noise on it, and are all located at the top of the AIDA mount.
Connections: HV from DSSD (-ve) is in FEE9 |
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Thu Aug 15 14:09:39 2019, NH, AIDA Waveforms 10x
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Noise seemed less strong today, unsure of cause. I had re-taped snout as tape was not sticking well.
Figures 1-4: Waves for all 4 FEEs connected to the DSSD
Figures 5-8: Zoomed in on region 400-600 |
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Wed Aug 14 14:40:18 2019, NH, High Frequency Noise in AIDA
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Figures of intense high frequency noise pickup in AIDA.
Will investigate source in S4.
Edit: Period is approx 40 cycles / approx 2.5 MHz (?) |
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Mon May 20 13:33:06 2019, NH, New Merger/MBS Test Runs 8x
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New merger has been worked on by VP which fixes the timewarp issues and MBS integration.
Currently no WAVE capture is supported, VP will re-add WAVE histogramming for startup testing.
10.05.2019 - Pulser walkthrough |
 Tue Aug 13 13:55:45 2019, NH, New Merger/MBS Test Runs 6x
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AIDA Finally working again so can test VP's added WAVE histogramming mode.
Fig 1. Waveforms for FEE12 ASIC 1. Sample rate = 10, Threshold = 10500
n.b. lots of "blank" wave channels for unknown reason, all low-energy channels show pulser so it's not a DSSD signal problem? |
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Tue Aug 13 09:17:02 2019, NH, AIDA 12/08/2019
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The other 6 FEEs were powered on one at a time to check no issues. None found.
All 12 FEEs plugged back into the PSU.
Note: The FEE temperatures reported on Friday were before a Reset/Setup of the DAQ, which means the ASICs run very fast and the hence run hotter. |
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Fri Aug 9 12:33:14 2019, NH, Aida Test 9/8/19 - FEES 1-6
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The water issue has been resolved - merely incorrect temperature guages (replaced). Water is 20 C as required.
S4 conditions at 13:12 CEST
26.5 C / 47.2 % / Td = 14.3 C |
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Mon Aug 5 12:57:48 2019, NH, S4 Conditions
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Temp: 26 C
Humidity: 50%
Dew Point: ~15 C |
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Wed Jul 10 10:46:05 2019, NH, AIDA/Water 10.07.2019
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S4 Conditions:
25.2 C, 35.3% RH, Td = 8.8 C
Water temperature: 20 C |
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Fri Jun 28 15:05:49 2019, NH, Aida 28/6/2019 - WATER OFF
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The humidity sensor hasn't reported humdities under 90% yet. In order to try and help dry the pipes and turn AIDA the water has been turned off the
weekend.
Sunday temperatures might reach 40 C which means it may struggle anyway. |
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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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Mon Jul 1 09:42:16 2019, NH, AIDA - 01/07/2019
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Water is still off.
Checked dewpoint sensor still flashing red light (indicating an error). Pipes warmed. Not what I expected. Possible fault?
I checked S4's ambient temp/humidity with a home-brought sensor: Reports 27 C/50% RH (Dew Point = 16 C) |