Make New Entry,
Make Followup Entry
User name M Friend
Log entry time 11:55:01 on November30,2009
Entry number 303714
This entry is a followup to: 301650
keyword=Compton photon beamline
The 2cm collimator for the Compton photon detector beamline was replaced with a 1cm collimator (insert), and the collimator was centered on the photon beam (GSO table position x=74 and y=39) as well as possible. The 2mm of lead shielding attached to the CH2 was removed (the CH2 is still there), and 2mm of lead shielding was placed upstream of the collimator.