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Gießen 2007 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 48: Instrumentation und Anwendungen

HK 48.5: Talk

Thursday, March 15, 2007, 15:15–15:30, E

Spin Filtering at COSY and AD — •Alexander Nass1, Paolo Lenisa3, Frank Rathmann2, Erhard Steffens1, and Hans Ströher21Phys. Institut der Universität Erlangen-Nürnberg, E.-Rommel-Str.1, 91058 Erlangen — 2Forschungszentrum Jülich, IKP, Leo-Brandt-Str.1, 52425 Jülich — 3Istituto Nazionale di Fisica Nucleare, 44100 Ferrara, Italien

The high physics potential of experiments with stored high-energy polarized antiprotons led to the proposal of PAX (Polarized Antiproton eXperiment) for the High Energy Storage Ring (HESR) of the FAIR at GSI (Darmstadt/Germany). It is proposed to polarize a stored antiproton beam by means of spin filtering with a polarized hydrogen (deuterium) gas target. The feasibility of spin filtering has been demonstrated in the FILTEX experiment. In order to optimize the spin filtering method several experimental studies with protons (at COSY/Jülich) as well as antiprotons (at AD/CERN) have to be carried out. These include the set-up of a polarized internal gas target (PIT) immersed into a low-β section, as well as a Siberian snake for longitudinal filtering. This work is supported by the BMBF, 06ER144.

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