Test of the CLAS12 RICH large-scale prototype in the direct proximity focusing configuration

. A large-area ring-imaging Cherenkov detector has been designed to provide clean hadron identification capability in the momentum range from 3GeV/ c up to 8GeV/ c for the CLAS12 experiment at the upgraded 12GeV continuous electron beam accelerator facility of Jefferson Laboratory. The adopted solut...

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2016-02, Vol.52 (2), Article 23
Main Authors: Anefalos Pereira, S., Baltzell, N., Barion, L., Benmokhtar, F., Brooks, W., Cisbani, E., Contalbrigo, M., El Alaoui, A., Hafidi, K., Hoek, M., Kubarovsky, V., Lagamba, L., Lucherini, V., Malaguti, R., Mirazita, M., Montgomery, R. A., Movsisyan, A., Musico, P., Orlandi, A., Orecchini, D., Pappalardo, L. L., Perrino, R., Phillips, J., Pisano, S., Rossi, P., Squerzanti, S., Tomassini, S., Turisini, M., Viticchiè, A.
Format: Article
Language:English
Subjects:
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
PARTICLE ACCELERATORS
Particle and Nuclear Physics
Physics
Physics and Astronomy
Regular Article - Experimental Physics
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Summary:. A large-area ring-imaging Cherenkov detector has been designed to provide clean hadron identification capability in the momentum range from 3GeV/ c up to 8GeV/ c for the CLAS12 experiment at the upgraded 12GeV continuous electron beam accelerator facility of Jefferson Laboratory. The adopted solution foresees a novel hybrid optics design based on aerogel radiator, composite mirrors and highly packed and highly segmented photon detectors. Cherenkov light will either be imaged directly (forward tracks) or after two mirror reflections (large-angle tracks). We report here the results of the tests of a large-scale prototype of the RICH detector performed with the hadron beam of the CERN T9 experimental hall for the direct detection configuration. The tests demonstrated that the proposed design provides the required pion-to-kaon rejection factor of 1 : 500 in the whole momentum range.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/i2016-16023-4