Research and development of a Mini-RICH detector with a gas radiator as a first step towards a CBM-RICH prototype

Abstract

The Compressed Baryonic Matter (CBM) Experiment is planned to be installed at a future accelerator facility, SIS 100/300 of FAIR (Facility for Antiproton and Ion Research), GSI (Gesellschaft fur SchwerIonenforschung) to study nuclear matter under extreme conditions with a high baryon density. A Ring Imaging Cherenkov (RICH) detector is now being developed for electron identification at pe < 8 GeV/c, well separated from pions. In order to optimize the physics performance of the CBM-RICH detector and to investigate different gas radiators, we developed a mini-RICH detector with a gas system as a first prototype and tested it with the pe ≃ 60 MeV/c electron beam at the Pohang Accelerator Laboratory (PAL).