High Precision Compton Polarimetry at ELSA

14 Sept 2015, 16:00
25m
VZ 04 Saal 1 (RUB)

VZ 04 Saal 1

RUB

Ruhr-Universität Bochum Universitätsstr. 150 D-44780 Bochum/Germany
Talk Session 3

Speaker

Rebecca Koop

Description

At the 3.2 GeV Electron Stretcher Facility ELSA, nucleon resonances are studied by performing beam-target double polarization experiments. For scattering experiments with circularly polarized photons, the stored electron beam's polarization needs to be optimized. As of now, this polarization can only be estimated via Moeller polarimetry by using the extracted electron beam. Continuous and precise Compton polarimetry in the stretcher ring would not only result in a faster optimization procedure. It would also allow for simultaneous scattering experiments with circularly and linearly polarized photons. For this reason, a Compton polarimeter is currently being installed. The planned polarimeter setup, first measurements with its components and results from the numerical simulation of the Compton process will be presented. The overall expected performance of the polarimeter will be discussed.

Primary author

Co-authors

Mr Florian Hinterkeuser (Universität Bonn) Mr Michael Switka (Universität Bonn) Wolfgang Hillert (Universität Bonn)

Presentation materials