• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name C.F. Perdrisat

    Log entry time 00:00:14 on January27,2004

    Entry number 116802

    keyword=Evening shift history

    Evening shift history.
    We are on Be target and had beam at 16:00,
    First full run 2151, started 15:45, 780 k ok
    16:45 1 cavity down, Beam back 17:10
    RICH HV down, reset during run 1253, which is junk
    start run 2154 at 17:02
    start run 2156 at 18:08
    18:45 RICH HV down, reset; ended run 2157 at 359 k events
    start run 2158 at 18:48
    18:53 RICH HV down, 2158 not interrupted, back at 18:57
    19:27, noted that OTR data not valid; ask MCC for repair. Nothing yet.
    19:48 OTR now operating, widths .27 and .23 mm, position 233 and 10.
    19:50, beam lost, no harp scan possible.
    19:55 start ramping down left septum
    20:10 ask for ARM
    22:00 left septum is cooled and rampimg up. Asked MCC to do multi-harp scan.
    22:15 MCC called back. They will wait till septum is ready, then do multi harp scan.
    22:30 Called MCC to inform that left septum is ready. MCC said that they are having problem with ep-ionchamber in hall A. It trips each time they try to send the beam in the hall. Optics on call is called in. So we wait.
    23:45 Multi harp scan is done. On IC12 x sig: 0.097 and y sig: 0.041.
    Beam is acceptable. We changed to water target and asked for 80 microamp with raster od 0.5x0.5
    00:00 still waiting for good beam.