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From Pressure Test to Cool-Down - Tuesday 09 - Point 4

SECTOR45

General planning:

  • W41-W42: L5 to 80K
  • W42-W43: Cool-down of the whole sector from 80K up to 4.5K
  • W44: Cool-down of the arc45 from 4.5K up to 1.9K / ElQA of the Circuits of the matching sections / Powering tests of the matching sections
  • W45: ElQA of the circuits of the arc and Powering tests of the matching sections
  • W46: Powering tests of the circuits of the arc

Activitites - w41:

  • Today -09/10 - cooldown L5 to 80K
    • Sector closed since 08/10
    • Access allowed with key and tokens except RE52-UL55
    • See document LHC-S-ES-0017 for particular access conditions
  • ElQA break-down monitoring all along cooldown; AT-MEL
  • QPS activities; AT-MEL
  • CMS vacuum installation/tests; AT-VAC
  • Magnet alignment; TS-SU
  • Cable campaign point5; TS-EL
  • Inner triplet interconnection; AT-MCS

Open Issues + Long term activitites:

  • Swapped cables of RB circuit on DFBA RR53
  • Cleaning – W43/44
  • Collimator installation W44
  • CMS-ZDC optical fiber installation; W44

SECTOR34

General planning+Activities:

  • W40: Pressure test of the arc / DSL still disconnected
  • W41-W42:
    • Consolidation
      • All lines under nominal pressure up to Wed. 10/10 - AT-VAC/ACR
      • Cryo-valves reconfiguration Thu.-Fri. 11-12/10 - AT-ACR
      • Opening and repairs of leaks (two leaks found: 7R4 ~2*10^-6 [mbar*l/s] and 7L4 ~10^-5 [mbar*l/s]) - AT-MCS/VAC
    • Checks the jacks - stable pressure conditions needed - 2 days needed - date to be decided, possibly on Friday 12/10 - TS-IC
    • ElQA.DOC from Wed. 10/10 - AT-MEL
    • Manometer installation on the ceiling at the level of RE38 – trolley passage difficult – TS-IC
  • W43: DFBLC-DSLC-DFBAF interconnections start (possibility to start during W42 if compatibility with consolidation)
  • W50: Flushing


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Topic revision: r1 - 2007-10-09 - BorisBellesia