• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name Y. Zhang

    Log entry time 08:10:27 on December12,2007

    Entry number 220123

    keyword=Owl Shift Summary

    Owl Shift Summary
    Y. Zhang (SL), X. Li (TO), L. Lagamba (3rd)

    00:00 Shift starts.
    01:31 3766 and 21788 in he target are two junk run as the dead time is too high.
    01:51 We change momentum of both arm. for left arm, the new momentum is 232.20 MeV/C while for right arm it is 267.10 MeV/C
    03:00 Right arm is ready during last run. So we start taking data on Dummy target.
    04:40 We change the momentum of the left arm. The new momentum is 216.49 MeV/C
    04:50 I call MCC to ask modify the beam current to 50um exactly. They sent us about 43um although we always ordered 50um.
    06:00 We change right arm momentum to 249.04 MeV/C
    07:40 We change the left arm momentum to 201.85 MeV/C
    >**************************************************
    L-HRS Runs

    P0=249.04 MeV/C
    3763 23:43-00:22 606k Beam Left 12C
    3764 00:28-00:33 276k Dummy
    3765 00:39-00:44 117k H2
    3766 00:49-01:31 2.01M Pb
    3768 01:43-01:51 325k He beam tripped several times and keep 48 uA during this run and also for the corresponding run in right arm, which number is 21790

    P0=232.20 MeV/C
    3769 01:57-02:02 330k He
    3770 02:09-02:51 810k Pb
    3771 02:55-03:00 149k H2
    3772 03:07-03:12 290k Dummy
    3773 03:18-03:56 628k Beam left 12C
    3774 04:00-04:37 702k Beam left 56Fe

    P0=216,49 MeV/C
    3775 04:51-04:56 382k He
    3776 05:05-05:47 2.49M Pb
    3777 05:53-06:08 201k H2
    3778 06:03-06:08 329k Dummy
    3779 06:13-06:55 689k Beam left 12C
    3780 07:00-07:37 844k Beam left 56Fe Beam fall to 44um during this run

    P0=201.850 MeV/C
    3781 07:41 Beam left 56Fe

    >--------------------------------------
    R-HRS Runs

    P0=286.48 MeV/C
    21785 23:43-00:22 406k Beam left 12C
    21786 00:28-00:33 168k Dummy
    21787 00:39-00:44 66k H2
    21788 00:49-01:31 1.17M Pb
    21790 01:43-01:51 327k He

    P0=267.10 MeV/C
    21791 03:06-03:12 183k Dummy
    21792 03:18-03:56 431k Beam left 12C
    21793 04:00-04:37 410k Beam left 56Fe
    21794 04:51-04:56 350k He
    21795 05:05-05:47 1.15M Pb
    21796 05:53-05:58 77k H2

    P0=249.04 MeV/C
    21797 07:41 Beam left 56Fe
    >***************************************************