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FIZIKA B 20 (2011) 4, 279-286
 
THE FROZEN SPIN TARGET AT MAMI
ANDREAS THOMAS
Institut für Kernphysik, Johannes Gutenberg-Universität Mainz,
J.-J.-Becher-Weg 45,
D 55099 Mainz, Germany
E-mail address: thomas@kph.uni-mainz.de
Received 31 January 2011; Accepted 14 December 2011
Online 10 February 2012
The A2-collaboration at the Mainz Microtron MAMI measures
photon absorption cross sections using circularly and linearly
polarized photons up to an energy of 1.5 GeV. The photons
are produced in the `Bremsstrahlung' process. In the years
2005/2006 the Crystal Ball detector, with its unique
capability to cope with multi photon final states, was set
up in Mainz.
In 2010, the experimental apparatus was completed by the
installation of a polarized target. The horizontal dilution
refrigerator of the Frozen Spin Target was constructed by
and is operated in close cooperation with the Joint
Institute for Nuclear Research in Dubna, Russia. The system
offers both longitudinally and transversely polarised
protons and deuterons.
PACS numbers: 29.25.Pj, 29.40.-n
UDC 539.1.074, 539.171
Keywords: Mainz Microtron, Crystal Ball detector, polarized target,
longitudinally and transversely polarised protons and deuterons
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