Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 46: Hadron Structure and Spectroscopy I

HK 46.1: Invited Group Report

Wednesday, March 18, 2009, 14:00–14:30, H-ZO 20

Overview of the MAMI facility in Mainz — •Achim Denig — Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Germany

The Mainz Microtron MAMI, a racetrack accelerator operated by the Institute of Nuclear Physics, produces a high-quality polarised CW electron beam. The latest stage MAMI-C is in operation since 2007 and offers a maximum beam energy of 1.5 GeV, which allows a wide program of research in the field of nucleon structure (form factors, sum rules, polarisibilities), baryon spectroscopy, hypernuclear physics, as well as tests of fundamental symmetries in eta-decays.

Three major experimental setups are installed at MAMI and recent results of these experiments are presented. The A1-collaboration investigates electron scattering with large magnetic spectrometers. The A2-collaboration using the Crystal Ball and TAPS detectors performs measurements with real photons, which are generated by Bremsstrahlung. The A4-collaboration studies parity violating electron scattering with a fast photon calorimeter. Special emphasis is placed on results, which are possible due to the upgraded machine energy and an outlook for the future is given.