Résumé du preprint DAPNIA-02-348

DAPNIA-02-348
High precision electron beam polarization measurement with Compton polarimetry at Jefferson Laboratory
F. Marie, E. Burtin, C. Cavata, S. Escoffier, D. Lhuillier, D. Neyret, T. Pussieux, P. Bertin
Since 1999, a Compton polarimeter based on a Fabry-Perot cavity to amplify the laser light is
 operational in the hall A of the Jefferson Laboratory. In 2000, the beam polarization has been 
continuously measured during N-Delta and GeP experiments providing a relative total uncertainty
 of 1.4% in 40 mn at 4.5 GeV. These unprecedented results have been obtained thanks to a scattered
 electron detector which has allowed to determine the response function of the photon calorimeter.

 

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