• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name Fatiha

    Log entry time 00:07:50 on October 1,2006

    Entry number 186027

    keyword=Shift Summary

    Shift crew:
    SL: F. Benmokhtar, TO: X. Zhan, Ana: Y. Qiang
    Guests: S. Strauch, A. Camsonne.

    5:00 pm We mainly discovered that the bad shape of the spot++ is
    due to FFB being off. MCC tried some exercise on getting the FFB
    on and center the beam at the same time; it didn't work. So we decided to work with the FFB off, even if the spot shape is not
    good.

    8:05 pm Moved the Carbon target. Raster off.
    8:40 pm Changed to 15cm Al dummy.

    9:15 pm Moving to the new kinematics: (Q2=0.3189 (GeV/C)2)
    The=47.02 deg, Pe=595.6 Mev/c
    Pp=517.1 MeV/c
    we cycled the right arms Q2 and Q3,
    9:45 pm we are having trouble getting Right arm moving,
    we paged alexandre he is coming, it looks like the spectrometer is stuck.
    10:20 pm Alexandre tried everything, no success,
    we paged the technicien Gary Dezern, he is coming, it will take him 20 minutes to arrive
    10:45 Finally, we could move the right spectrometer to 56.56 deg,
    The power supply became functional miraculously!
    we asked for beam back. The Tech was on his way, so we called
    him back and explained to him the situation. This problem should be looked at seriously, it might happen in the future.


    List of runs:

    5383 LH2 5M
    5385 LH2 5 M
    5386 LH2 1 M MCC ffb turned on, it was off.
    5387 LH2..... Junk, mcc trying to fix the ffb and the position.
    5388 LH2 5 M
    5389 LH2 2 M Lost beam
    5391 LH2 3 M
    5392 C 0.3 M
    5393 Al 0.2 M
    5394 LH2 5 M
    5395 LH2 goes to the enxt shift.