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MuTr Recap Status and Plan. Plan. We are shooting for North Station-1 for post Run10 shutdown installation. Best scenario is to mount portable “clamp” type re- capacitation board without soldering, without taking out Station-1 chamber. Prototype re- capacitation boards are tested in RIKEN.
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Plan • We are shooting for North Station-1 for post Run10 shutdown installation. • Best scenario is to mount portable “clamp” type re-capacitation board without soldering, without taking out Station-1 chamber. • Prototype re-capacitation boards are tested in RIKEN.
Recap Board Prototype Test • Measured Electrical Contact of between probe and pad after disassembly/re-assembly of recap boards • About 50% of probes lost contact. • Problem: • Individual probe doesn’t have flexibility to absorb unique surface structure of pad Capacitor board probe pad
Improvement for Prototype II • Let individual probe have flexible freedom to adjust elevation so that it can absorb surface structure (remaining solder on pad). • Rubber pad • Spring probe (Current limit < 0.2A to prevent from burning spring) • Comb shape capacitor board • Let capacitor board have more power to push probe • Thicker G10 • Angled Spring probe G10 G10 Prototype I Prototype II
Conductive Silicon Rubber Pad Conductive Rubber 2~3mm thick probe pad About 30mW for 2mm thickness ~10mW for our probe size
Conformal Coating and Remover Conformal coating Removed coating • Conformal coating can be removed by • “remover”. • Removed coating need to be suck up.
Schedule Production cost : ~ $50k / Station-1 / Arm
Installation Scenario • If “clamp” works: • Need Station-1 Scaffold • 1 hour coating removal / octant / man • 2 hours clamp install / gap / octant /man • 1 hour HV test / gap / octant /man • 1 octant/day/2men • 2 weeks + 1 week contingency = 3 total weeks • If Station-1 need to be taken out: • 2 ~ 3 months