Hybrid MPGD-based detectors of single photons for the upgrade of COMPASS RICH-1

0473503 - ÚFP 2018 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Alexeev, M. - Birsa, R. - Bradamante, F. - Bressan, A. - Chiosso, M. - Ciliberti, P. - Dalla Torre, S. - Dasgupta, S. - Denisov, O. - Finger, M. - Finger jr., M. - Fischer, H. - Gobbo, B. - Gregori, M. - Herrmann, F. - Königsmann, K. - Levorato, S. - Maggiora, A. - Makke, N. - Martin, A. - Menon, G. - Nováková, Kateřina - Nový, J. - Panzieri, D. - Pereira, F.A. - Santos, C.A. - Sbrizzai, G. - Schiavon, P. - Schopferer, S. - Slunečka, M. - Steiger, Lukáš - Sulc, M. - Tessarotto, F. - Veloso, J.F.C.A.
Hybrid MPGD-based detectors of single photons for the upgrade of COMPASS RICH-1.
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2015 IEEE. San Diego: Institute of Electrical and Electronics Engineers Inc., 2015, č. článku 75811949. IEEE. ISBN 978-1-4673-9862-6.
[2015 IEEE Nuclear Science Symposium and Medical Imaging Conference. San Diego (US), 31.10.2015-07.11.2015]
Institucionální podpora: RVO:61389021
Klíčová slova: Thick GEM * RICH * COMPASS * Photon detection * Micropat-tern gas detector
Obor OECD: Electrical and electronic engineering

A seven year-long R&D programme has been performed and the resulting detector architecture is a hybrid MPGD including two THick GEM (THGEM) multiplication stages followed a MICROMEGAS. The first THGEM board forms the photocathode support: its upper face is CsI coated. The properties of THGEM-based photocathodes have been studied in details. The two THGEM layers act as pre-amplification stages and, thanks to a staggered configuration, namely by the misalignment of the holes of the two THGEMs, the electron shower produced in the pre-amplification phase is distributed onto a larger surface portion of the following MICROMEGAS unit, where the final multiplication takes place: it is so possible to operate at gains as high as 105 and more even in radioactive environments. COMPASS RICH-1 is a large-size Cherenkov imaging counter with gaseous radiator for hadron identification up to 50 GeV/c. The construction of a set of large-size (unit size: 60×60 cm2) gaseous photon detectors based on the hybrid MPGD architecture for the upgrade of COMPASS RICH-1 is ongoing and the upgraded detector will be in operation in 2016. The R&D studies, the engineering aspects and the construction challenges are presented
Trvalý link: http://hdl.handle.net/11104/0270633