The Hall A Compton Polarimeter Upgrade. Sirish Nanda Jefferson Laboratory Parity Collaboration Meeting July 22, 2008. The Hall A Compton Polarimeter Upgrade. Goal:. Provide 1% beam polarimetry from 1 to 11 GeV.
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Parity Collaboration Meeting
July 22, 2008
Provide 1% beam polarimetry from 1 to 11 GeV.
High precision Parity violating experiments are feasible with this upgrade
High Power Green Fabry-Perot Cavity
Twice the Analyzing power of present IR cavity
Increased in Figure-of-Merit
Participating Institutions:Jefferson Lab, Saclay, Syracuse, Clermont-Ferrand, Uva,
Duke, Carnegie-Mellon, William & Mary
Installation in Aug-Sep 08.
Commissioning during the Transversity expt Oct 08-Jan 09
Photograh: Alan Gavalya
>> We have achieved >12%/W SHG conversion efficiency.
>> Demonstrated 1 watt green power with 2.9 watt IR pump