Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Instrumentation II

HK 4.1: Group Report

Monday, March 11, 2024, 16:45–17:15, HBR 19: C 2

Current status in the concept design, assembly, and performance evaluation of the Silicon Tracking System for the CBM experiment — •Dario Alberto Ramirez Zaldivar for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The Compressed Baryonic Matter (CBM) is one of the experimental pillars at the FAIR facility. The Silicon Tracking System (STS) is the central detector for tracking and momentum measurement. It consists of 876 double-sided silicon sensors arranged in 8 stations.

Significant strides have been made over the past year in developing the STS. The finalized concept design and geometry implementations mark a crucial milestone in the detector’s evolution. The consolidation of the procedures for module assembly and testing materializes at the onset of the series production.

Prototype components of the STS have been operated in mini-CBM (mCBM), a small-scale setup at SIS18 consisting of sub-units of all major CBM systems, which aims to verify the concepts of free-streaming readout electronics, data transport, and online reconstruction as well as in the E16 experiments at J-PARC.

This report provides an overview of the recent progress and highlights the comprehensive performance studies conducted on the STS modules. In-beam operation at the mCBM and E16 facilities has provided invaluable insights into the detector’s capabilities and response under realistic experimental conditions. These findings support extrapolating the detector’s final performance.