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    User name brads

    Log entry time 21:39:58 on November 18, 2008

    Entry number 249625


    keyword=Modified shielding around BB Cerenkov witness PMT (iteration 2)

    I put some lead plates around the sides of the witness PMT. Top and bottom are covered by a 1" thick Al plate. The front side (facing the target) is open.

    Signal and HV in use are from Cerenkov PMT 19.

    A copy of this log entry has been emailed to: meziani

    Figure 1