München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 52: Instrumentation und Anwendungen

HK 52.2: Vortrag

Donnerstag, 23. März 2006, 17:15–17:30, H

Polarized 3He targets at MAMI-C — •Jochen Krimmer¹, Werner Heil¹, and Patricia Aguar-Bartolomé² — ¹Institut für Physik, Universität Mainz — ²Institut für Kernphysik, Universität Mainz

With the new acceleration stage MAMI-C, electrons up to 1.5 GeV will be available for experiments with real and virtual photons. Upcoming experiments with polarized 3He gas targets will include e.g. measurements for meson photoproduction and the electric form factor of the neutron. 3He gas is polarized via metastability exchange optical pumping. The polarizer in Mainz can reach a polarization of 75% at a production rate of 2 bar*l/h. Recent results from materialtests for the target vessels will be shown. Furthermore, an improved understanding of the wall relaxation processes will be presented.