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From Pressure Tests to Cooldown - Point 8 - Monday 09.10.2007

Sector 8-1

• Inner Triplets
  • Right 8: the leak has been located in line C', precisely on a weld in the middle of the flexible. It is currently being replaced by the US collaborators. Once it is corrected and the works in the SSS completed, the inner triplet will be pressurised again for testing. It should be sufficient for this test to have the C' line in the SSS welded, however it is not sure that only one line can be pressurised without affecting the other lines, hence most likely the test will be carried out at the end of the SSS works (wk 47).
  • Left 1: inner triplet closed and being leak-tested.
• SSS Q17R8
  • The replacement of the SSS started this week and will last till wk 46.
  • Local electrical tests will progress in parallel with the assembly of the SSS.
• MB1158
  • The diode has been cleaned up. A continuity test will be done before closure beginning of next week. The final validation cannot be done before the TP4-A before the flushing.
• DFBAs repairs
  • A latest date for taking a decission about repairing or not the DFBAs has to be set for not jeopardizing the starting date of the flushing.
  • Paolo reminds that the time used for reparing the DFBAs will be different for each sector due to the different configurations.
• ElQA
  • TP4-A is planned for week 47, just before the flushing.
  • Low voltage continuity tests of the dipole lines will be carried ut during the SSS replacement between the DFBAA and C18R8
  • The non-conformities being corrected by INEO this week will be re-checked once they are closed.
• AUG Test
  • The yearly AUG test for the whole Point 8 is planned for October 19. HCC will study how can we get the maximum profit from it.
• A4L1
  • Vacuum mechanical works will start on week 43 and will last till week 47.
  • Collimator to be installed week 44.
  • Neg-activation weeks 48 and 49 (overlaps with one week of flushing)
• LHCb Compensator Magnet Tests
  • The three compensator magnets will be on today and tomorrow. No interference with other activities.
• Cryogenics
  • Nothing pressurized in the cold circuits.
  • Warm helium line a few mbars above atm pressure
  • Installation of the instrumentation rods in the DFBs of Right 8 will be done tomorrow Wednesday

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