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MuTR / MuTrig Readiness for Run13

MuTR / MuTrig Readiness for Run13. Itaru Nakagawa on Behalf of MuTrig / MuTr Group. MuTr Cross Talk Status. Recapacitation on South Station-1 Gap-2&3 Anode Terminator Installation to South Station-2 Clamp Installation To South Oct-1,2,3,4

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MuTR / MuTrig Readiness for Run13

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  1. MuTR/MuTrigReadiness for Run13 Itaru Nakagawa on Behalf of MuTrig/MuTr Group

  2. MuTr Cross Talk Status • Recapacitationon South Station-1 Gap-2&3 • Anode Terminator Installation to South Station-2 • Clamp Installation To South Oct-1,2,3,4 • Anode Terminator Installation to North Station-2 • Clamp Installation to North Oct-1,2,3,4 in Oct 1 -20 Region installed cramp last year Station-2 terminators

  3. Cause of MuTr HV Trip Anode Wire HV (1800 V) HV 1 MW Spark Spark 100 pF Dry Air Cover GND 1 MW Often the case, HV trip is caused by unwanted ground path at the capacitor or its footprint. Installing dry air cover on top of clamp to prevent moisture.

  4. Issues : Fragile Dry Air Tube Joints Silicon glue to give some flexibility for installation. The glue gets ripped off from the coverif the tube is under stress for a while. Need to supplement the glue.

  5. Solution • Add more glue on it to gain extra binding strength. • Tested 3 different glues at test bench though, couldn’t get to the point of optimization. We ran out of time.

  6. More Issues • Insufficient Dry Air Flow • The present dry air flow is not enough. • Carter will upgrade the flow meters with the one has larger maximum flow rate.

  7. Muon Trigger Status • Replaced 4 Masked ADTX boards with spares • These bad boards are not spitting out errors now, thus can not be able to reproduce the problem. • Replaced with spares however. • Performance Check with Calibration Pulse and OK. • South Station-1 miscabling/function test will be carried out soon. • 2~3 ADTX Boards needs to be replaced in North

  8. backups

  9. Muon Trigger Status • Replaced 4 Masked ADTX boards with spares • These bad boards are not spitting out errors now, thus can not be able to reproduce the problem. • Replaced with spares however. • Performance Check with Calibration Pulse and OK. • South Station-1 miscabling/function test will be carried out soon. • Fix Bad HV Channels (St-2, St-3) • Decap in St-2, Oct-7 • Dry air cover in a couple of St-3 channels • Fix Detached Dry Air Tube Joints Installed Last Year • Fixed Unstable OASys Camera Glue Mount

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