München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 7: Instrumentation und Anwendungen
HK 7.7: Vortrag
Montag, 20. März 2006, 15:45–16:00, H
Cherenkov Detector for WASA at COSY * — •Peter Vlasov1, James Ritman1, Anatoly Povtoreyko2, Regina Siudak3, Jens Bisplinghoff4, and Frank Hinterberger4 — 1Institut für Kernphysik, Forschungszentrum Jülich, 52428 Jülich — 2Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna, Russia — 3Institute of Nuclear Physics, Polish Academy of Sciences, Cracow, Poland — 4Institut für Strahlen und Kernphysik, Universität Bonn, D-53115 Bonn
WASA (Wide Angle Shower Apparatus) is a large-acceptance detector for charged and neutral particles. It has been operated at the CELSIUS storage ring in Uppsala (Sweden) until June 2005 and has now been transferred to the Cooler Synchrotron (COSY) in Jülich. The installation of WASA at COSY will significantly enlarge the possibilities of the COSY facility. The physics program of WASA at COSY can be summarized as: symmetries and their violation, dynamical isospin breaking, decays of η and η’ mesons. The WASA detector is currently being modified to cope with the higher beam energy available at COSY. Major modifications will take place in the forward part of the detector. To increase the identification power and the kinetic energy resolution a Cherenkov detector will be added. The proposed Cherenkov detector consists of 80 wedge shaped modules arranged symmetrically around the beam axis. Cherenkov light emitted by charged particle will be transferred to a photomultiplier tube by means of total internal reflection. The amplitude of the signal on the PMT will give information about the kinetic energy of the particle.
*supported by BMBF and FZ-Jülich.