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    User name aniol

    Log entry time 00:14:20 on February27,2000

    Entry number 34641

    This entry is a followup to: 34555

    keyword=entry due 14:30 yesterday

    shift summary

    8:10 run 2336 - first 100K events taken at 56uA, beam down for ~1/2hr to try and get more beam. Ended run 2336 while they ramp beam up in hallA.

    8:49 start 2337 with 102uA

    10:30 the beam is unstable at 115uA. I asked the machine operators to go back down to about 100-105uA to see if the beam is stable. The nominal "115ua" run 2338 which went for 45 minutes had an average current of 59uA.

    10:35 mcc calls and says that the trips were due to their attempts to tune hall C and not due to the beam current at 115. We let them try again at 115uA.

    11:30 end run 2339 - noticed that cryogen levels readbacks were unphysical- paged Javier Gomez, no response. Then the electron dipole tripped off.
    MCC says they reset the IOC for hall A.
    Paged Riad and Mark(tech on call). Reset the HAC ioc in middle room. This cleared the faults on the e-dipole power supply and we could read cryogen levels. These read back ok. However, we could not reset the e-dipole from upstairs. On the e-dipole power supply screen:
    pressed reset
    The "M3/M4 Overtemp" fault stays on, but Mark says this is not a problem.
    pressed on button, after fault lights went off
    power supply did not turn on.

    Mark is on his way in. Asked MCC for an access.

    e-dipole power supply reset as per Mark Stevens' entry 34555

    14:28 get back to 110uA running with run 2342