Status of COMPASS RICH-1 Upgrade with MPGD-based Photon Detectors

M.G. Alexeev,R. Birsa,F. Bradamante,A. Bressan,M. Chiosso,P. Ciliberti,S. Dalla Torre,S. Dasgupta,O. Denisov,M. Finger, H. Fishcher,B. Gobbo,M. Gregori, G. Hamar,F. Herrmann, K. Königsmann,S. Levorato,A. Maggiora,N. Makke,A. Martin,G. Menon,J. Novy,D. Panzieri,F. Pereira, C. A. Santos,G. Sbrizzai,P. Schiavon,S. Schopferer, M. Slunechka,K. Steiger, L. Steiger, M. Sulc,F. Tessarotto,J.F.C.A. Veloso

arXiv: Instrumentation and Detectors（2018）

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摘要

A Set of new MPGD-based Photon Detectors is being built for the upgrade of COMPASS RICH-1. The detectors cover a total active area of 1.4 m 2 and are based on a hybrid architecture consisting of two THGEM layers and a Micromegas. A CsI film on one THGEM acts as a reflective photocathode. The characteristics of the detector, the production of the components and their validation tests are described in detail.

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