Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 31: Instrumentation 11

HK 31.2: Talk

Tuesday, March 24, 2015, 17:15–17:30, M/HS2

Performance study of the Projectile Spectator Detector for the CBM Experiment — •Ilya Selyuzhenkov¹, Andrej Kugler², Vasilij Kushpil², Vasily Mikhaylov^2,3, Selim Seddiki¹, and Pavel Tlusty² for the CBM collaboration — ¹GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt — ²Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež, Czech Republic — ³Czech Technical University (CTU), Prague, Czech Republic

The expected performance of the Projectile Spectator Detector (PSD) for the CBM experiment at the future FAIR facility will be presented. The PSD is a compensating lead-scintillator calorimeter designed to measure the energy distribution of the projectile nuclei fragments (spectators) and forward going particles produced close to beam rapidity. The main purpose of the PSD is to provide an experimental estimate of heavy-ion collision centrality and reaction (symmetry) plane orientation.

A sample of heavy-ion collisions simulated with realistic modeling of nuclei fragment production, directed and elliptic flow of produced particles and transported through the GEANT Monte-Carlo of the CBM detector geometry is used to study the PSD performance. The performance of the centrality and reaction plane determination is explored with the PSD as a standalone detector and in a combination with other CBM subsystems.