[Hallb-engineering] Hall B meeting minutes
burkert at jlab.org
Mon Nov 28 12:16:23 EST 2011
The minutes of today's Hall B meeting can be seen at this link:
Please note the run coordinator report for G14.
The Hall is currently open to replace the sample HD target with the
production HD target. This will take at least today and tomorrow.
The photon beam has still some issues that indicate a possible
obstruction in the beam line. This needs to be addressed during the next
couple days. Also, the high occupancies in the DC's indicate some source
of high background that needs to be identified. A possible culprit is a
6mm diameter cleanup collimator that may cause beam scraping, especially
as we are running at low energy where the photon beam size is not small.
Usually we use cleanup collimator of 14mm in diameter even at the higher
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