Stave 250 preparations at ral
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Stave 250: Preparations at RAL. Peter & Martin. Stock at RAL. BCC V3 1 with correct R TERM fitted 3 with R TERM removed 19 scheduled to have R TERM removed 10 more to be shipped with the stave core EoS 1 cut (ready for stave) 1 uncut Modules Cambridge M5, M6

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Stock at ral
Stock at RAL

  • BCC V3

    • 1 with correct RTERM fitted

    • 3 with RTERM removed

    • 19 scheduled to have RTERM removed

    • 10 more to be shipped with the stave core

  • EoS

    • 1 cut (ready for stave)

    • 1 uncut

  • Modules

    • Cambridge M5, M6

    • “US module” – can anyone confirm its identity?

      • 7 boxes in progress at Liverpool, more modules will ship soon

  • Tandem DC-DC

    • 1 uncut, unmounted

      • Did not work unloaded during CERN tests, best avoid?

    • 1 uncut, mounted

    • 12 cut, mounted

      • Significant glue voids on most samples, only 2 good for use

      • Remainder will return to Oxford to be reworked




  • “BURCO2” cooling plant

  • Plumbing to gas shed partially done

  • Gas shed contains gas panel & 1 bottle

  • Pipes to connect to stave frame ready

  • CO2 Safety

  • Bund under plant collects lost CO2

  • Will house “Cellar Safe” Detector (below)

  • Alarm will

    • close CO2 Solenoid

    • Start extractor fan (flex pipe)

    • Be shown on repeaters at room doors


The stave will sit in its own bund. CO2 collected in this one “drains” to the

lower Bund (with the CO2 sensor) through a fan assisted pipe (not shown).

The stave test cover

has a clear panel to

verify there is no ice.

An opaque lid will sit

on top of this.


Cables readout
Cables & Readout one “drains” to the

  • LV pigtail and cable made (shown on last slide)

  • HV cable Glenair to D37 Made

    • D37 extension in progress

      • mates directly to HV MUX box

    • Patch panel to 12 SCTHV channels in progress as backup

  • HSIO and 2 x CPX400DP PSU will sit on shelf on top of the bund

    • Within reach of 5ft SAMTEC cables

  • 3 * SCTHV will sit in half height rack below the bench

  • Cambridge Interlock will monitor cooling and interlock Stave power

  • New windows 7 PC to be installed next week


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