SMuK 2021 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 13: Instrumentation V

HK 13.1: Group Report

Tuesday, August 31, 2021, 16:30–17:00, H2

CBM TRD performance at DESY and in mCBM at FAIR-Phase0 — •Adrian Meyer-Ahrens for the CBM collaboration — Institut für Kernphysik, Münster, Deutschland

The Transition Radiation Detector (TRD) of the Compressed Baryonic Matter (CBM) experiment is composed of irregular polyethylene (PE) foam radiators and Multi-Wire Proportional Chambers (MWPCs). It will serve as intermediate tracker and for heavy fragments and electron identification. A high yield of TR generated by electrons passing through the radiator is crucial for electron identification. In a dedicated electron testbeam campaign, two TRD chambers were set up at DESY in August of 2019 and tested with electron beams using various radiator thicknesses.

In the first part of this talk, results on the performance of the detector in this testbeam campaign as well as comparisons to radiator simulations will be presented. The second part focuses on the participation of the TRD in the mCBM campaigns at GSI at SIS18. High-rate collisions on a fixed-target are used here for CBM detector and readout performance measurements. This talk presents the TRD performance in continuous readout mode in the measurement campaigns of 2020 and 2021.

This work is supported by BMBF grant 05P19PMFC1.