Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Instrumentation XIII

HK 62.8: Vortrag

Freitag, 31. März 2017, 15:45–16:00, F 102

Spectra and Position Reconstruction on CBM-TRD Data from CERN-SPS Testbeam 2016 — •Philipp Kähler for the CBM collaboration — Institut für Kernphysik, WWU Münster, Deutschland

Real-size prototypes of the 95× 95 cm² Transition Radiation Detector (TRD) chambers for the upcoming Compressed Baryonic Matter (CBM) experiment have been subjected to a testbeam campaign at CERN-SPS in the last quarter of 2016. Several datasets have been recorded to confirm the detector performance as well as to investigate the self-triggered, free-streaming SPADIC v1.1 DAQ chain in fixed-target Pb–Pb collisions with beam energies of 13, 30 and 150 AGeV. First results on the analysis of the testbeam data will be shown. Offline-event reconstruction enables the understanding of charge distribution on the cathode pad-plane and is resulting in an inclusive energy loss spectrum of charged particles. Different approaches for the spectrum calculation are compared. For the first time, this spectrum can be calibrated using ⁵⁵Fe measurements performed at SPS. DAQ-specific possibilities of event reconstruction in high-rate and high-multiplicity environments are discussed. Furthermore, steps towards 2-dimensional position reconstruction and particle tracking in the CBM-TRD setup will be shown. Work supported by BMBF.