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    BI/TB on LN4 Laser Emittance meter, PS/SPS BGI

    → Europe/Zurich
    866 2-D05 (CERN)

    866 2-D05

    CERN
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    LN4 LEM (T. Hofmann, G. Boorman):

    • Design for 160 MeV with 2 stations (end of L4, transfer-line)
    • Installation only during May 2017 (debuncher cavity planning)
    • Electron multiplier (as for BSM) for beam size profile
      • Less sensitive to stray protons (not case for diamonds)
    • ADC covering 4 * 28 channels @50 MS/sec
    • PXI based system appears best suited and EN/STI agrees to develop and maintain
      • BE/BI to formalise the agreement with EN/STI (Rhodri/L. Jensen)
      • T. Hofmann and G. Boorman to write specifications for front-end and expert software
      • F. Roncarolo to decide whether BI/PM person (Felix?) should follow FPGA developments

    PS/SPS BGI (J Storey):

    • Magnet - 2 pole causes too much orbit deformation -> triplet proposed
    • PS tank:
      • Technical issues with glue and soldering of timePix may limit performance
      • Chip heating means external cooling circuits required
      • Low out-gassing epoxy glue proposed
      • Seems on track for installation during TS on 8th of June 2016
      • Slow control PLC being programmed
      • Worrying resonance with wire-bonds (CDF/ATLAS) -> to be checked (James)
    • SPS systems:
      • Radiation concerns believed to be understood and resolved
      • Re-commissioning to start during June

    LHC Status (Enrico):

    • Commissioning over - now to intensity ramp-up and luminosity production
    • SPS beam dump limits beam to 72 bunches per cycle/injection
    • LHC Sequencer to check status of moveable devices before hign intensity injection (Enrico)
    • Request for additional checks to be done in BSRL (LDM) server
    • Question about LIFETIME logging (L. Jensen) - how to reduce spikes (Stephane Bart)
    • Responsibility for water cooled racks to be clarified (Rhodri)
    • Reference documentation for VdM scans needed (Enrico)
    • Planning meeting for TS #1 to be organised 27.05 (Enrico)
      • Use of BI sharepoint logbook imposed for changes to operational systems

    OAF (JJ Gras):

    • Nice list of improvements shown
    • Next steps?

     

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