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User name brads
Log entry time 11:10:52 on November 20, 2008
Entry number 249957
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