First electron beam polarization measurements with a Compton polarimeter at Jefferson Laboratory

M. Baylac; E. Burtin; C. Cavata; S. Escoffier; B. Frois; D. Lhuillier; F. Marie; J. Martino; D. Neyret; T. Pussieux; P. Y. Bertin; C. W. de Jager; J. Mitchell

doi:10.1016/s0370-2693(02)02091-9

arXiv · hep-ex/0203012

First electron beam polarization measurements with a Compton polarimeter at Jefferson Laboratory

M. Baylac·E. Burtin·C. Cavata·S. Escoffier·B. Frois·D. Lhuillier·F. Marie·J. Martino·D. Neyret·T. Pussieux·P. Y. Bertin·C. W. de Jager·J. Mitchell

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Abstract

A Compton polarimeter has been installed in Hall A at Jefferson Laboratory. This letter reports on the first electron beam polarization measurements performed during the HAPPEX experiment at an electron energy of 3.3 GeV and an average current of 40 $μ$A. The heart of this device is a Fabry-Perot cavity which increased the luminosity for Compton scattering in the interaction region so much that a 1.4% statistical accuracy could be obtained within one hour, with a 3.3% total error.

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M. Baylac, E. Burtin, C. Cavata, S. Escoffier, B. Frois, D. Lhuillier, F. Marie, J. Martino, D. Neyret, T. Pussieux, P. Y. Bertin, C. W. de Jager, J. Mitchell. 2002-03-08. First electron beam polarization measurements with a Compton polarimeter at Jefferson Laboratory. https://doi.org/10.1016/s0370-2693(02)02091-9

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