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HK: Physik der Hadronen und Kerne

HK 22: Postersitzung

HK 22.43: Poster

Montag, 7. März 2005, 16:30–18:00, TU MA141

Antriproton-Ion Collider — •L. Fabbietti¹, M. Cargnelli², B. Franzke³, J. Homolka¹, P. Kienle², R. Krücken¹, H. Lenske⁴, A. Skrinsky⁵, K. Suzuki¹, and S. Wycech⁶ — ¹Technische Universität, Munich, Germany — ²S. Meyer Institute for Subatomic Physics, Vienna, Austria — ³GSI, Darmstadt, Germany — ⁴Institute for Theoretical Physics, Giessen, Germany — ⁵INP, Novosibirsk, Russia — ⁶Soltan Institute for Nuclear Studies, Warsaw, Poland

An antiproton-ion collider is proposed for FAIR at GSI to study antiproton absorption at medium energies in stable and radioactive nuclei, for the determination of both neutron and proton rms radii. To realize this novel method, it is planned to cool and collide antiprotons of 30 MeV energy with 740A MeV ions in the NESR and identify and momentum analyze the recoil nuclei, that circulate in the ring acceptance after the antiproton absorption, via Schottky noise frequency spectroscopy. From the measurement of the exclusive absorption cross-sections on neutrons and protons the rms radii will be derived independently. The expected luminosities of the antiproton-ion collider has been calculated together with the estimation of the annihilation cross-section and the detection technique.