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    User name jwexler

    Log entry time 07:56:47 on June 04, 2010

    Entry number 324448

    keyword=New HVs for detectors (120Hz, PbD#3)

    The new detector HVs for the 150k and 100k channels signals at 120Hz (IT
    2920, RD 160).  The A_T detectors were calibrated to be at about 125k
    channels. 
    
    HV channel | 150k ch. | 100k ch.
    2.0        | 900      | 900
    2.2        | 688      | 639
    2.4        | 775      | 719
    
    14.4       | 1000     | 1000
    14.6       | 744      | 690
    14.8       | 798      | 745
    
    These HVs seem low - I'm concerned about where we are on the gain curve
    (vis a vis linearity, as we didn't check voltages this low during the
    linearity studies done recently).