• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT
    Make New Entry, Make Followup Entry

    User name M Jones

    Log entry time 07:06:42 on May 5,2009

    Entry number 270968

    keyword=Owl shift summary

    Start shift with smooth data taking.

    After ending run 1846/20752
    Stopped HAPPEX run 31327 at 2:10 436K events.
    Started HAPPEX run 31328 at 2:11

    02:44 Ended run 1847/20753 when we had many NDET trips. Looking
    at BPM strip chart (see halog 270933) can see bad beam positions when MCC tried to restore beam. MCC called and is bringing tuned
    beam to the hall to try and reestablish the orbits.

    02:52 MCC has reestablished beam, after this trip rate drops dramatically.

    05:55 beam went down. MCC working on cavity and FOPT.
    06:36 beam back.
    07:00 beam off for beam studies. Radcon in process of surveying the hall.

    Run Start time End Time Events Comment
    ---------- ---------- -------- ------- ----------
    1844/20750 23:23 00:12 2M/1.5M Good run
    1845/20751 00:13 01:18 2M/1.5M Good run
    1846/20752 01:19 02:10 2M/1.5M Good run
    1847/20753 02:11 02:44 0.9M/0.7M Good run, until beam problems caused the NDET to trip multiple channels.
    1848/20754 02:54 03:38 2M/1.5M Good run
    1849/20755 03:39 04:21 2M/1.5M Good run
    1850/20756 04:22 05:04 2M/1.5M Good run
    1851/20757 05:05 05:51 2M/1.5M Good run
    1852/20758 05:54 06:21 51K/42K Beam mostly off during run, junk
    1853/20759 06:36 07:00 1.16M/0.87M good run