A COMPTON BACKSCATTERING POLARIMETER FOR MEASURING LONGITUDINAL ELECTRON POLARIZATION

Compton backscattering polarimetry provides a fast and accurate method to measure the polarization of an electron beam in a storage ring. Si nce the method is non-destructive. the polarization of the electron be am can be monitored during interval target experiments. For this reaso n, a Compton polarimeter has been constructed at NIKHEF to measure the polarization of the longitudinally polarized electrons which can be s tored in the AmPS ring. The design and results of the polarimeter, the first Compton polarimeter to measure the polarization of a stored lon gitudinally polarized electron beam directly, are presented in this pa per. (C) 1998 Elsevier Science B.V. All rights reserved.