TITLE

Diamond Detectors for Compton Polarimetry

AUTHOR(S)
Martin, J. W.; Dutta, D.; Narayan, A.; Wang, P.
PUB. DATE
December 2009
SOURCE
AIP Conference Proceedings;12/17/2009, Vol. 1182 Issue 1, p623
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Parity-violating electron scattering experiments aim to test the standard model of particle physics through precise low-energy determinations of the weak mixing angle. These experiments require determination of the polarization of the incident electron beam to the 1% level or better. An example of this type of experiment is the Q-weak experiment, which will be conducted in Hall C at Jefferson Lab in 2010 and beyond. We are constructing a Compton polarimeter in Hall C to provide continuous monitoring of the polarization with the goal of 1% absolute polarization determination. In our Compton polarimeter, circularly polarized laser light will impinge upon the electron beam. Electrons scattered by the Compton process will be momentum-analyzed in a dipole magnet downstream of the interaction point. A diamond strip tracker will be placed further downstream of the dipole to sense the Compton-scattered electrons and determine their momenta. The design of the polarimeter, focusing on electron detection, and our progress in prototyping and constructing the diamond strip tracker, are discussed.
ACCESSION #
47200802

 

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