ELOG DESPEC

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

DESPEC

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Entry time:

Thu Apr 11 22:04:50 2024

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

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

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9/16 aidas &lt; 20kHz - max rate 162k

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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.

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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:

&nbsp;&nbsp;&nbsp; - Grounding drain wires to frame. Observe AIDA conditions.

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

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