AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 572     Entry time: Thu Apr 11 22:04:50 2024
Author: JB 
Subject: 12.04.2024 AIDA-bPlast noise optimisation 

15:00 Platform in, biasing detector. Temp OK Attachment 1. test - Pulser OFF.

           Rates somewhat worse than last night - probable contact on grounding of snout. Attachment 3.

           Histograms okay, some FEE64s now have hot channels. Attachment 2.

           9/16 aidas < 20kHz - max rate 162k

 

18:06 - powering down detector for the weekend. Overall system is fine, some channels (hot channels) definitely picked up noise, but condition is overall stable over three hours. See atachments 4-5.

 

TO-DO (kicking the can down the road):

- Some work to do on noise, but we might have to accept the situation as it currently is.

- Implement bPlast trigger scheme. Set bPlast thresholds, get bPlast current draw undercontrol - observe AIDA noise.

- Try different grounding configuration:

    - Grounding drain wires to frame. Observe AIDA conditions.

    - Reconnect 4V out to R&SRMP4040 common ground with PN 300 PSU as well. Observe AIDA conditions.

 

Attachment 1: Screenshot_from_2024-04-12_15-11-18.png  173 kB  Uploaded Fri Apr 12 15:17:58 2024  | Hide | Hide all
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Attachment 2: Screenshot_from_2024-04-12_15-22-54.png  217 kB  Uploaded Fri Apr 12 15:24:44 2024  | Hide | Hide all
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Attachment 3: Screenshot_from_2024-04-12_15-22-26.png  132 kB  Uploaded Fri Apr 12 15:24:44 2024  | Hide | Hide all
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Attachment 4: Screenshot_from_2024-04-12_18-07-35.png  221 kB  Uploaded Fri Apr 12 18:08:03 2024  | Hide | Hide all
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Attachment 5: Screenshot_from_2024-04-12_18-07-27.png  133 kB  Uploaded Fri Apr 12 18:08:03 2024  | Hide | Hide all
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