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. |
