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Message ID: 52     Entry time: Fri Apr 11 14:07:39 2025
Author: CG 
Category: General 
Subject: End of run summary 
All detector components are now in safe storage in Jan's container.

One SiPad (MSPAD 16A) shows lifting of the chip from the PCB in one corner. This has been boxed, labelled and left visible in the lab and should be taken to 
the detector workshop for repair.

Attached is the final detector health spreadsheet as of today.
Also available at: https://docs.google.com/spreadsheets/d/1Gt1tFHwn4XFrJ5_-nQvTi635UD0aHgN6gCdXDTHQdkI/edit?gid=299353113#gid=299353113

In summary, all detectors in the BGO assembly show signs of significant radiation damage and increased leakage currents. Most of these detectors do not reach 
plateau until >200V, but may still be usable in future at bias voltages of ~250V.

The detectors in the GAGG assembly also show signs of radiation damage, but less so due to this pocket being stuck in the parked position for some time. The 
detectors are still very usable.

Some bias problems were observed during and after the experiment, but all detectors (except for MSPAD 16A) show an expected diode response, so this may be 
indicative of shorts/etc elsewhere in the Samtec cables/flange/end-cap PCBs/etc. Future tests should be done to identify the source of these irregularities.

We are missing one MHV4 module. I will check at TRIUMF but I think it *should* be at GSI.

Data are backed up on HDDs to go to TRIUMF, as well as MBS configuration, the Go4 build, and the screenshots taken while we were using the remote scope.
Attachment 1: PLEIADES_detector_health.xlsx  135 kB  Uploaded Fri Apr 11 15:23:17 2025
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