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    User name Markowitz

    Log entry time 21:03:28 on December20,2003

    Entry number 114742

    keyword=Bad tube, a1 ch 8? Bogdan, note.

    Shown in figure 1 is the HV GUI for A1 left. Note the current in Ch 8 (the ninth PMT according to the new math). In figure 2 is A1 right.

    Ch 8 has no detectable amplitude in the ADC spectra of run 1454 (a current run with electrons in both arms). Suspect the base may be bad. It should be check as soon as possible.

    FIGURE 1

    FIGURE 2