Phenix run 13 status
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PHENIX Run-13 status. Hubert van Hecke. Commissioning continues. VTX stripixels. Commissioning was going well in December, but Massive leaks were seen in the outer barrel layer of the VTX ( stripixels )

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PHENIX Run-13 status

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Phenix run 13 status

PHENIX Run-13 status

Hubert van Hecke

Hubert van Hecke - 19 Feb 13 Time meeting


Commissioning continues

Commissioning continues

VTX stripixels

  • Commissioning was going well in December, but

  • Massive leaks were seen in the outer barrel layer of the VTX (stripixels)

  • Removed the East half of the detector, disassembled it, reassembled with only the FVTX, and reinstalled in the IR

  • Investigation identified galvanic corrosion between carbon and Aluminum as the cause

  • VTX pixels (inner 2 barrels) and FVTX don’t use Aluminum

FVTX

VTX pixels

FVTX

VTX stripixels

Hubert van Hecke - 19 Feb 13 Time meeting


Commissioning continues1

Commissioning continues

  • FVTX back and operating (>98% live channels)

  • Flammable gas is on since Feb 1, 2-person watch shifts started Jan 22

  • Cosmicstakensince 4 Feb, ongoing when no beam

  • Shielding wall rolled in on7 Feb, area closed up on 8th

  • Test runs with all (~20) subsystems today

Hubert van Hecke - 19 Feb 13 Time meeting


Near term objectives

Near-term objectives

  • When no beam, run cosmics

    • Cosmics are needed to study momentum smearing, charge-sign efficiencies, trigger issues, backgrounds etc.

    • Cosmics will be collected in beam down-time periods throughout the run

  • Commission with beam as it arrives

  • Access during the day, as needed

Hubert van Hecke - 19 Feb 13 Time meeting


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