Eur. Phys. J. A (2006) 28: 29-38
https://doi.org/10.1140/epja/i2006-09-004-7

MAMI 2005

Experiments with polarized ³He at MAMI

¹ Departement für Physik und Astronomie, Universität Basel, Klingelbergstr. 82, 4056, Basel, Switzerland

^* e-mail: Daniela.Rohe@unibas.ch

Received: 10 May 2006
Accepted: 10 May 2006
Published online: 11 May 2006

Abstract

Experiments with polarized ³Â¯He at MAMI have already a long tradition. The A3 Collaboration started in 1993 with the aim to measure the electric form factor of the neutron. At this time MAMI was the second accelerator where experiments with ³Â¯He were possible. Some years before this pilot experiment the development of the apparatus to polarize ³He in Mainz started. There are two techniques which allow to polarize sufficient large quantities of ³He. Both techniques will be compared and the benefit of ³Â¯He for nuclear physics will be discussed. A review of the experiments done so far with ³Â¯He at MAMI will be given and the progress in the target development, the detector setup and the electron beam performance will be pointed out.