• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name Eric

    Log entry time 00:05:33 on January25,2005

    Entry number 139969

    Followups:

    keyword=Shift summary


    New crew on shift: Eddy Jans, Vincent Sulkosky, Eric Voutier
    -----------------

    16:00 Taking shift while the target people are on work in the hall

    16:55 Target repair is finished, ask for beam permit

    17:13 Start data taking on LD2 15 cm with 10 uA

    18:05 In the course of data taking of run 2057, bigbite detectors
    were switched off because of high rates (~2 MHz) and no use for the current measurement.

    20:30 We loose communication with the bigbite and neutron detectors
    HV crates. There was some work on it today (entry 139951) but ity is
    not completed. In the meantime, we checked the scalers and
    everything looks again... after some calls, we decided to continue
    running like that and watch the scalers to contol the operation of
    the detectors. HVs are on, and the communication problem will be
    solved tommorrow.

    21:30 At replay of run 2060, notice that we loose two TDCS as can be seen also in the scalers. They are:

    Plane-1 Right TDC-1 and Plane-3 Left TDC-12

    Still continuing running like that. These HV are in the "lost"
    crate.


    Run History
    -----------

    -# LD2 15 cm

    2057 ... 250k, Good run, Bigbite detectors HV swithch-oof during run
    2058 ... 200k, Good run
    2059 ... 200k, Good run, HV communication problem
    2060 ... 200k, Good run, loose 2 TDCs
    2061 ... 200k, Good run
    2062 ... will go to next shift