Future experiments at MAMI

  • Reinhard Beck
  • Alexander Starostin
Laboratory physics programs and new facilities


A new experimental program is about to get underway at the Mainz Microtron (MAMI) Facility. The experimental apparatus consists of the famous Crystal Ball together with TAPS detector as a forward wall, and a central tracker. This configuration provides a geometrical acceptance close to 4π combined with good energy and angular resolution in particular for neutral final states. After the energy upgrade of the Mainz Microtron (MAMI-C), the Crystal Ball and TAPS setup will be equipped with a frozen-spin polarized target filled with \(^1 \vec{\rm H}\), or \(^2 \vec{\rm H}\) to perform new high precision, high statistics measurements of neutral meson production on the nucleon up to 1.5 GeV incident photon energies. In particular it provides a unique opportunity to investigate the GDH sum rule on a neutron target in the contributions by reactions \({\vec \gamma} {\vec n} \to \pi^0 n\), \({\vec \gamma} {\vec n} \to \pi^0 \pi^0 n\) and \({\vec \gamma} {\vec n} \to \eta n\).


Photon Energy Experimental Program Angular Resolution Incident Photon Good Energy 


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Copyright information

© Società Italiana di Fisica, Springer-Verlag 2004

Authors and Affiliations

  • Reinhard Beck
    • 1
  • Alexander Starostin
    • 2
  1. 1.Institut für Kernphysik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany
  2. 2.Dept. of Physics and Astronomy, UCLA, box 1547, Los Angeles, CA, 90025-1547, USA

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