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    User name reitz

    Log entry time 23:34:47 on January13,2005

    Entry number 139205

    This entry is a followup to: 139198

    keyword=TECH: Q2/Q3 recovery

    this is the procedure which Gary Dezern suggested, and with which we recovered from the Q2/Q3 problem:

    symptom Q2 and Q3 won't go to the correct current/field but stop some
    amps short of it.

    to recover: pop up the right arm Q2 (Q3) systems and set the current to 0 amps, wait until they are down.

    go to the middle room and press the "right arm magnets reset" button
    on reset switch box #1

    this will reboot the IOC and effects Q2, Q3 and the dipole.
    the reboot takes several minutes, during which the dipole
    starts to ramp down.

    once the epics controls are back, immediatly type in the
    momentum setting again, and hope that the dipole recovers
    without going all the way down.
    go to fields -> dipole NMR -> and turn the regulator back on
    now you can go to the Q2/Q3 systems, press reset, turn them
    back on, and follow the standard cycle procedure (1400amps for
    2minutes in Q2/Q3 right before going to the production setting)