Erlangen 2026 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 37: Hadron Structure and Spectroscopy VII
HK 37.6: Vortrag
Donnerstag, 19. März 2026, 17:45–18:00, PHIL C 301
Performance studies of the CBM Forward Spectator Detector for (pp and) dp-reactions — •Ruijia Yang1, Frank Goldenbaum1,2, and Petr Chaloupka3 for the CBM collaboration — 1Bergische Universität Wuppertal — 2GSI — 3Czech Technical University
The Forward Spectator Detector (FSD) of the CBM (Compressed Baryonic Matter) experiment plays a crucial role in both heavy-ion and proton-proton (pp) collisions. In pp interactions, the FSD is designed to identify events with small momentum transfer, typically dominated by elastic or quasi-elastic scattering, where the outgoing protons retain most of their energy and are deflected at very small angles. This contribution presents recent simulation studies performed to optimize the granularity and geometry of the FSD. With the full CBM geometry, the impact of the FSD module size, beam-pipe shape and material budget on the spatial resolution and detection efficiency has been systematically investigated. In addition, two event generators – a Fritiof (FTF) event generator and a PLUTO-based generator – have been implemented to simulate deuteron-proton (dp) reactions in CBM, in order to investigate the capability of CBM to study quasi-free pp and proton-neutron (pn) reactions. Integration of these generators into the CBM simulation is ongoing, and first results – together with updated FSD performance studies – will be presented at the conference.
Keywords: CBM; FSD; pp collision