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    User name F.Benmokhtar

    Log entry time 00:01:26 on October11,2002

    Entry number 87876

    keyword=Shift Summary

    Shift Crew:
    ------------
    F. Benmokhtar
    R. De Leo
    J. P. Chen

    -4:25 Got 20 uA,
    -4:35 Lost the beam.
    - 4:40 Beam back.
    -5:15 Turn the Compton chicane off, asked for beam off.
    -Analysed run# 1334, even by moving the beam position to -1 on y,
    we still see this asymmetry on the y_tg walls.
    -5:30 Beam Back. trying to center the beam on (0,-1) .
    -5:42 Taking data again, the problem, y_tg now is better, but there is still
    an asymmetry.
    -5:55 Moved the target 2 mm up, run#1336
    -6:05 y_tg is a little bit better, but not satisfying. We asked to move the target
    2 more mm up. The effect on y_tg is worse.
    -6:15 So we decided to move the target 1mm down. this means it is 3 mm up, and
    put the beam position to (0,0).
    -6:30 Beam Down for 10 minutes. trips on the injector.
    -6:50 Problem with the beam, down for at least 15 minutes. In this time J. P. is
    rebooting the IOC.
    -7:10 asking to reduce the raster size by a factor of 2 (0.7 by 0.7) when the beam is back. J. P. thinks this will solve the problem on y_tg.
    -7:30 Lost the reaster completelly, the crew chief will contact the concerned people
    to fix it.
    -8:20 Call from the chief crew, they can;t give as a raster smaller than 1.6 by 1.6
    -8:40 Beam back, checking the raster, y_tg looks better.
    -8:55 MCC called, they succeeded to get raster size 0.7 by 0.7
    - y_tg looks much better!!!!
    -9:40 Roc1 Crashed, rebooted Coda,
    -10:35 Changing to P0-right=767.911 MeV.
    -11:05 Beam Down.
    -11:45 Broblem in the injector, will have the beam in a half to one hour....


    Run Summary:
    ------------------

    P0-right=831.90 MeV.
    -------------------------
    Run# 1333............Junk
    Run# 1334.............Problem with y_tg
    Run# 1335.............Test run
    Run# 1336.............Moved the target 2mm up, Test run.
    Run# 1337.............Moved the target 2 more mm up, Test run.
    Run# 1338.............Moved the target 1 mm down, so it is 3 mm up, beam (0.0).
    Run# 1339.............Raster check.
    Run# 1340.............Raster check, 1.6 by 1.6
    Run# 1341.............Good run raster 1 by 1 , but Coda crashed in the end.
    Run# 1342.............Good run!!!

    P0-right=767.911 MeV
    --------------------------
    Run# 1343............Good run, stopped, mcc took the beam.