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    User name dhamilton

    Log entry time 06:37:15 on April 3,2008

    Entry number 229696

    keyword=BB E and dE thresholds

    BB E discriminator thresholds are currently 400mV. This corresponds to an QDC channel (averaged over all paddles) of 540. The 3-sigma point on the upper end of the 700 MeV/c elasctic proton events (averaged over paddles 16 - 19) corrsponds to channel number 730. I have therefore increased the E threshold to 550mV. This is just the first iteration.

    For the dE paddles threshold = 250mV, QDC channel 270. Elastic proton 3-sigma point = 300. Threshold has been increased to 280mV.

    We will check these thresholds against the next few sets of QE data and make final adjustments.