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 Oct 31 07:41:20 2021

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(Wed 27 October)

Started with top-most flange. Attemptedto plug in MACOR lead in DSSD plug in preparation for jacking in. Realised that extender plate thickness causes plug to be rasied with respect to nominal position, which results in plug non entering straight. Removed extension plate.

Plugged MACOR lead in. OK. Inserted M6 jacking bolts and gently turned by hand. No resistance until jacking action starts. Jacked plug in with spanner and even 1/4 turns. Removed bolts. All OK.

Attempted same with bottom-most cable harness. Due to strain from top-most wire harness the plate is now rotated on the rod. Rotated back. Jacked in. Removed bolts. No issues.

MACOR plugs show small gap in rear part. Gap seems due to harness strain and disappears depending on plate orientation. Will check but pins are obviously connected.

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(Thu 28 October)

Attempted to plug in top-left MACOR lead. Dog leg conflicts with jacking screw! Only solution is to slacken bolt, rotate strut, fasten again with detectors still on plate. Result attached. No clear if design, manufacturing or mounting oversight.

Had to attemping plugging in a few times before jacking bolts went in straight (i.e. no resistance felt). Jacked in both leads. No further issues.

Gap appears less significant in newly plugged leads. probably as a result of lack of rotational freedom.

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