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    User name breuer

    Log entry time 00:32:58 on December 16,2000

    Entry number 32011

    keyword=HMS dipole problems all shift 16:00-24:00 Dec15,2000

    HMS Dipole problems all shift.

    Joe Beaufait called Mike Fowler and Paul Brindza for help.
    They eventually exchanged one or two modules with the RS232 (?) interface
    having been found to be dead.

    After they left at about 21:30 we were not able go to full current: the
    power supply trips between 220 and 250 A with the following items
    lit on interlock page:


    after I changed thresholds before change
    forces: *** ???
    quench detector left coil **. ..*
    right ... ***
    current lead **. ***

    Paul Brindza guided me (Herbert Breuer) through the following changes

    Quench 2 level from dial 1.10 to 1.50, later to 2.00
    current 1 and 2 dial from 0.80 to 1.00 each
    ramping voltage on power supply proper from 2.1V to 2.0 V to 1.9 V
    (these readings not corrected for estimated +0.1 V parallax)

    None of these changes gave us back the Dipole. Called Mike Fowler back
    in.