Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 7: Instrumentation III

HK 7.5: Talk

Monday, February 26, 2018, 15:15–15:30, HZO 90

Evaluation of Innovative Cooling Concepts with High-Performance Carbon Materials for Vertex Detectors operated in Vacuum — •Daniela Mijatovic for the CBM-MVD collaboration — Goethe-Universität

Operating high-precision vertex detectors in vacuum, like the Micro Vertex Detector (MVD) in the CBM experiment at FAIR, calls for trading off the cooling performance against the material budget to guarantee high-quality tracking performance. Vertex detectors operating in vacuum have to fulfill additional requirements, among them an excellent cooling performance as convective cooling is absent. As a consequence, high-performance, carbon-based materials are used for sensor carriers following the concept of heat conduction to guide the heat dissipated by the sensors to dedicated heat sinks located outside the geometrical detector acceptance. Sensor carrier materials based on pyrolytic graphite (e.g. Thermal Pyrolythic Graphite (TPG)) were systematically characterized. To do so, a standardized vacuum test stands with IR thermography was set up to quantitatively examine the thermal performance of the MVD modules in vacuum.

This contribution presents our work in designing and testing innovative carrier material assemblies to efficiently cool ultra-thin vertex detectors in the context of constructing the Micro-Vertex-Detector of CBM at the future FAIR facility.

"This work has been supported by BMBF (05P15RFFC1), GSI and HIC for FAIR."