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    User name brads

    Log entry time 11:10:52 on November 20, 2008

    Entry number 249957

    Followups:

    keyword=BB Cerenkov witness PMT: shielding added in front

    I added 5+ cm of lead at the front of the dark box containing the witness PMT. The three Pb bricks are inside the tool box and are not visible from the outside.

    I also added two more of the 1" thick Pb plates to the forward left+right sides of the box to ensure the shielding entirely surrounds the PMT.

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