Köln 2004 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

HK: Physik der Hadronen und Kerne

HK 12: Poster Session: Instrumentation and Applications

HK 12.29: Poster

Tuesday, March 9, 2004, 13:30–15:30, Foyer

The luminosity monitor of the parity violating experiment at MAMI — •Thorsten Hammel — Institut für Kernphysik, Johannes-Gutenberg-Universität Mainz, 55099 Mainz

A detector system is described which measures the luminosity of the parity violating experiment (PVA4) at MAMI to control the stability of the liquid hydrogen target. This is required for a precise study of the parity violating in the scattering of longitudinal polarized electrons on unpolarized protons. A helicity correlated fluctuation of the target density will lead to false asymmetries. The knowledge of these false asymmetries is an important requirement of the experiment. A monitor and a electronic system has been developed for the PVA4-Experiment. The Properties of the luminosity monitors, investigated in ≈2000 hours of electron beam, and its performance in the experiment are presented.