Emu upgrade report
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EMU Upgrade Report. Dick Loveless University of Wisconsin. 12 October 2012. ME4/2 Chambers. Chamber f actory is operating reliably Chamber production rate ~1/week Completed 19 chambers (out of 67 needed) Chambers 211 – 218 in 2 month HV test Chambers 219 and 220 in assembly area . 211.

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EMU Upgrade Report

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Emu upgrade report

EMU Upgrade Report

Dick Loveless

University of Wisconsin

12 October 2012


Me4 2 chambers

ME4/2 Chambers

  • Chamber factory is operating reliably

    • Chamber production rate ~1/week

    • Completed 19 chambers (out of 67 needed)

    • Chambers 211 – 218 in 2 month HV test

    • Chambers 219 and 220 in assembly area

211

212

218

213

214

215

216

217

219

220


Final assembly testing

Final Assembly & Testing

  • Final Assembly

    • Add on-chamber electronics and cables

    • Assembly going well - ~1-2 days per chamber

  • Testing

    • All CSCs go through a 2-month HV test (up to 4KV – nominal HV is 3.6 KV)

    • On-chamber electronics tested -- 14 different tests including trigger, gas gain, cosmic ray data

    • Completed 10 chambers – rate limitation is production, not testing


Chamber production chart

Chamber production chart

Showing production rates for the 1stendcap (31 CSCs)


Me1 1 electronics i

ME1/1 Electronics I

  • ME1/1 Test Stand in B904

    • 7 prototype DCFEBs have been installed & powered

      • Prototype LVDB board working fine

      • Cooling operational

      • Currents high - - roughly 50 amps per CSC

      • On-board temperatures ~30 C (reasonable)

    • Currently reading DCFEBs using copper skewclear cables and old DMB (can only read 5 boards)

    • Reading new TMB boards using optical fibers


Me1 1 electronics ii

ME1/1 Electronics II

  • DCFEB boards

    • Most firmware operational - - currently working on the firmware for ODMB to enable data transfer to ODMB

  • FF_EMU ASIC

    • Currently does not work

    • Decision to focus effort on backup solution via Cu

  • ODMB

    • Prototype board exists at CERN, needs firmware

  • TMB

    • Received new firmware enabling full functionality


Me1 1 low voltage

ME1/1 Low Voltage

  • Design of LV system finalized

    • ME1/1 prototype test working well

    • Layout of cables & power supplies

    • Junction box prototype under construction

    • 8 Maraton power supplies ordered


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