• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name E.Chudakov

    Log entry time 04:09:23 on July21,2006

    Entry number 174679

    keyword=MCC gives up on beam tuning for tonight

    At 04:00 MCC informed us that they had given up on beam tuning for tonight. They could not get rid of a "stripe" seen on the viewers.
    The beem spot seems to be extended vertically. They could not
    send a CW beam above 0.5uA without tripping some ion chambers.

    Another problem they noticed was a strong dependence of Hall A
    beam energy on Hall C beam current.

    While they played with the beam we noticed a strange effect on
    the upstrem BCM - the voltage readout was sometimes zero.