• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name paschke

    Log entry time 00:02:15 on May23,2004

    Entry number 122436

    keyword=Swing Shift Summary (no beam)

    No Beam, all shift. Some notes below, but nothing worth reading.

    ---------------------------------------------------------------------

    Shift started awaiting beam. MCC attempting to send high current (100 uA)
    into Hall A in order to complete the machine setup. Presently, they are
    wrestling with current trips in the transfer line to Hall A.

    18:30 called MCC. Investigating cryo ioc problem, after this is solved they
    will search for quad in 6R (arc) which appears to be mis-set, and after that,
    beam!

    19:00 MCC calls. They have an apparent magnet hardware problem. They will
    go in the tunnel to investigate. Soon afterward, I notice an ELog
    entry describing CHL "crash" arising from a cryomodule instability.

    21:00 Called MCC for an update. They sound surprise that we hadn't been told:
    the CHL crash is still in recovery, and they probably won't be able
    to put beam back into the machine fro several hours. It is considered
    "unlikely" that we would see beam this shift.
    Sent DA and 4th Shifter home.

    22:30 Called MCC for an update. CHL back up, RF recovery ongoing, hoping to
    return to working on optics problem in half hour or so.

    00:00 No beam, all shift. Too bad. Better luck to owl!