The Hybrid MPGD-based photon detectors of COMPASS RICH-1
Abstract
Novel gaseous detectors of single photons for RICH applications have been developed and installed on COMPASS RICH-1 in 2016. They have a hybrid architecture consisting of two staggered THGEM layers (one equipped with a CsI photoconverting layer) and a bulk Micromegas; they cover a total area of 1.4 squared meters and operate stably and efficiently. They provide a single photon angular resolution of ~ 1.8 mrad and about 10 detected photons per ring at saturation. The main aspects of their construction and commissioning, their characterization and performance figures are presented.
- Publication:
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arXiv e-prints
- Pub Date:
- December 2018
- DOI:
- 10.48550/arXiv.1812.06971
- arXiv:
- arXiv:1812.06971
- Bibcode:
- 2018arXiv181206971A
- Keywords:
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- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment;
- Nuclear Experiment
- E-Print:
- Proceedings of RICH 2018 Workshop