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

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

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

2018

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.

Keywords:

Compass
MicroMegas detector
Upgrade
photon detector
Detector
Optics
Physics
Photocathode

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