ELOG CARME

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

CARME

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Entry time:

Sun Apr 30 10:01:39 2023

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(29 April)

Inspected CARME after opening. See attached. Some key takeaways.

- No visible damage to the detectors or the Kapton cables. No visible deposits or dust on the detectors either.&nbsp;

- No damage even to the fragile thermocouple wires

- The strain relief on the top and bottom did nothing. Those on the sides may have helped.

- The split funnels on top fell and fortunately missed the detectors. We should not keep them. Unclear if they feel when moving CARME or during the beamtime but either is too dangerous. We need another solution or we&#39;ll have to do without.

- Obvious traces of white dust particles over the chamber. Most likely MACOR.

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Jacked out harness for bottom left detector that was not accepting bias. MACOR shavings fell off while jacking out. MACOR connector on side with no pins is clearly damaged. See attached. Should not affect performance.

Tested bias pins - they work. No visible damage to the detector except one bias bond wire has disconnected. Possibly one more nearby. TD thinks this is not enough to explain observed behaviour.

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Mounting a DSSD on the plate while it hangs in Carme appears possible but very risky. Dismounted whole left support plate, and right support plate.&nbsp;

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Unless a clear fault can be identified for either the bottom left detector or its harnesses, both the detector and the harnesses will be replaced. Plan to remount top left detector with the same harnesses.

Plan to mount two more detectors on the right hand plate.

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