Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Instrumentation XIII

HK 62.6: Talk

Friday, March 31, 2017, 15:15–15:30, F 102

Development of a Gas System Prototype for the CBM-TRD — •Felix Fidorra for the CBM collaboration — Institut für Kernphysik, WWU Münster, Deutschland

The Compressed Baryonic Matter (CBM) experiment is a fixed target heavy-ion experiment at the future FAIR accelerator facility. The CBM Transition Radiation Detector (TRD) is one of the key detectors to provide electron identification and charged particle tracking. For the detection of the Transition Radiation, a Multi-Wire Proportional Chamber (MWPC) with a 5 mm drift region is used. As these detectors are very sensitive to the operating conditions, a high quality gas supply system has been designed and built in order to supply the detectors with a gas mixture of constant composition and flow. The operation of the full detector system requires accurate monitoring and regulation. The design goal of the gas supply to the TRD chamber is a constant flow of 3 l Ar/CO₂ mixture in the ratio of 80/20 %. Of particular importance is to secure the maximum overpressure of 1 mbar to protect the sensitive Kapton entrance window of the chambers. In this talk the author will report on the requirements to the system and discuss the process of its development. Work supported by the German BMBF.