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    User name A. Camsonne

    Log entry time 21:54:10 on March 8,2006

    Entry number 165827

    keyword=A15R out of the neutron trigger

    Took out A15 from S14, A15 not anymore in the trigger.
    I looked again at the S14 A14 A15 oscillation problem.
    Turning off the high voltage does change the rate because it eliminates the high frequency noise but does not change at al the oscillation at 60 Hz which amplitude is about 50 mV. It seems the cables are picking off some additionnal noise which adds up. Taking out out A15 from the trigger reduces this oscillation by two since only A14 contributes and comes to the same level as the other sums.
    I am not sure how to solve this problem