New Spin-Physics Experiments with Frozen-Spin Target at MAMI

Journal Article · Wed Dec 14 04:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3667302· OSTI ID:22004002

Reicherz, Gerhard ^[1]; Thomas, Andreas ^[2]

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1. Experimentalphysik 1 AG 1, Ruhr - Universitaet Bochum, D-44780 Bochum (Germany)
2. Institut fuer Kernphysik, Johannes Gutenberg-Universitaet Mainz, J.-J.-Becher-Weg 45, D-55099 Mainz (Germany)

In the physics program for the MAMI C accelerator the investigation of the spin dependent excitation spectrum of the nucleon and fundamental properties, such as the spin polarizabilities of the nucleon are an important goal. This will be tackled in the framework of the A2-collaboration by doing double polarization experiments, using the linearly or circularly polarized energy marked photon beam in combination with a new solid state 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 polarized protons and deuterons. The target material, butanol and deuterated butanol, was developed and produced by the Ruhr-University of Bochum and provides the highest degree of polarization, measured with a new NMR apparatus. The status of the experiment and preliminary results will be presented.

• OSTI ID: 22004002
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1418; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUTANOLS
DEUTERON BEAMS
DEUTERONS
DUBNA
EDUCATIONAL FACILITIES
EXCITATION
JINR
NUCLEAR MAGNETIC RESONANCE
PARTICLE STRUCTURE
PHOTON BEAMS
POLARIZABILITY
POLARIZATION
POLARIZED BEAMS
POLARIZED TARGETS
PROTONS
SCINTILLATION COUNTERS
SPIN