SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 56: Instrumentation XV

HK 56.5: Vortrag

Donnerstag, 23. März 2023, 15:15–15:30, SCH/A.101

Prototype studies towards the CBM RICH air cooling system* — •Gianluca Boccarella, Christian Pauly, Dennis Pfeifer, and Karl-Heinz Kampert for the CBM collaboration — Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal

The Compressed Baryonic Matter (CBM) RICH detector is a CO₂ based gaseous Ring Imaging Cherenkov detector using MultiAnode PhotoMultipliers (MAPMT) for Cherenkov photon detection. It is placed beam downstream directly behind the CBM superconducting magnet and serves the precise electron identification and pion suppression. The photon detector is split into two separate cameras each including 30k channels DIRICH frontend readout electronics. Both cameras are enclosed by an iron shielding box in order to protect the MAPMT sensors from the magnetic stray field of the nearby CBM magnet. This shielding enclosure poses a major challenge for the cooling of the electronics dissipating approximately 3 kW heat inside each camera module. In order to achieve reliable cooling of all ∼1000 readout modules per camera we plan to use a closed-cycle enforced air cooling system.

In the talk, we present the cooling concept of the CBM RICH detector together with first measurements obtained using a full scale prototype of one of the camera modules.
^* supported by BMBF (05P19PXFCA, 05P21PXFC1) and GSI.