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Agarwala, J.; Alexeev, M.; Azevedo, C.D.R.; Bradamante, F.; Bressan, A.; Büchele, M.; Chatterjee, C.; Chiosso, M.; Cicuttin, A.; Ciliberti, P.; Crespo, M.L.; Dalla Torre, S.; Dasgupta, S.; Denisov, O.; Finger, M.; Finger Jr, M.; Fischer, H.; Gregori, M.; Hamar, G.; Herrmann, F.; Levorato, S.; Martin, A.; Menon, G.; Panzieri, D.; Sbrizzai, G.; Schopferer, S.; Slunecka, M.; Sulc, M.; Tessarotto, F.; Veloso, J.F.C.A.; Zhao, Y.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 02/2020, Letnik: 952Journal Article
Novel gaseous detectors of single photons for RICH applications have been developed and installed on COMPASS RICH-1 in 2016, covering a total area of 1.4 m2. They have a hybrid architecture consisting of two staggered THGEM layers (one equipped with a CsI photoconverting layer) and a bulk Micromegas and operate stably and efficiently, providing a single photon angular resolution of ∼1.8 mrad and about 10 detected photons per ring at saturation. The main aspects of their construction, commissioning, characterization and performance are presented.
