Berlin 2005 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 22: Postersitzung

HK 22.91: Poster

Montag, 7. März 2005, 16:30–18:00, TU MA141

Wire Scanner Analysis and Emittance Measurement in the A4 Compton Polarimeter — •Jeong Han Lee — Institut fuer Kernphysik,Universitaet Mainz, D-55099 Mainz, Germany

The A4 collaboration investigate the structure of the proton by measuring parity-violating asymmetry for elastic electron scattering off an unpolarized proton. To extract the physics asymmetry, it is crucial to determine the polarization of the electron beam to high accuracy. The Compton Polarimeter has been installed in the new beamline and has been operational. There are three wire scanners in the polarimeter. The purpose of these are to determine transverse positions of the electron and photon beam and measure an emittance and beam size in the Compton Polarimeter.

This poster will present the result of the wire scanner analysis and progress of the emittance measurement.