SoLID Document 119-v1

PVDIS baffle optimization: No hole baffles

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Richard S. Holmes
Updated by:
Richard S. Holmes
Document Created:
15 Jun 2018, 13:37
Contents Revised:
15 Jun 2018, 13:37
Metadata Revised:
15 Jun 2018, 13:37
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This report investigates optimization of the PVDIS baffles via a modification which reduces the acceptance for photons from the target. Changes in signal and background rates in the GEMs, LGC, and EC are discussed. I find a small reduction in DIS signal rate at the same beam current, small reductions in GEM occupancy and charged pion flux at the EC, and a factor of about 2 reduction in background to signal in the LGC. These modest effects imply our baffle design is near optimal.
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pvdis baffles
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