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HK: Physik der Hadronen und Kerne

HK 13: Poster Session: Heavy Ions

HK 13.5: Poster

Dienstag, 12. März 2002, 10:30–12:45, Foyer Chemie

Particle Intensities at the GSI Secondary Beam Facility — •M. Ardid¹, J. Diaz¹, A. Andronic², A. Banu², O. Busch², M. Gersabeck², and R.S. Simon² — ¹Institut de Física Corpuscular, Universitat de València and Centro Superior de Investigaciones Científicas, E-46071 València, Spain — ²Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany

Using protons and ¹²C and ¹⁴N ions from the 18 Tm heavy–ion synchrotron SIS, secondary beams of electrons and pions are produced and delivered to the experimental areas in the SIS target hall. We discuss the production mechanism in the pencil–like thick target rods and address the transport performance of the beam lines as well as the impact of diagnostic detectors for monitoring and precise momentum definition. Mixed π⁻/e⁻ beams with momenta between 0.5 and 2.0 GeV/c have been extensively used for prototype tests of the ALICE Transition Radiation Detector, while π⁺ beams around 1 GeV/c with maximum intensity and optimal π⁺/p ratio are required for physics runs at the HADES and Kaon Spectrometer.