/ Instrumentation


Long term experience and performance of COMPASS RICH-1


Tessarotto, F. (INFN, Trieste) ; Abbon, P. (IRFU, Saclay) ; Alexeev, M. (INFN, Trieste) ; Birsa, R. (INFN, Trieste) ; Bordalo, P. (Lisbon, CFTP) ; Bradamante, F. (Trieste U.) ; Bressan, A. (Trieste U.) ; Büchele, M. (Freiburg U.) ; Chiosso, M. (Turin U.) ; Ciliberti, P. (Trieste U.) ; Dafni, T. (IRFU, Saclay) ; Torre, S.Dalla (INFN, Trieste) ; Dasgupta, S. (INFN, Trieste) ; Delagnes, E. (IRFU, Saclay) ; Denisov, O. (INFN, Turin) ; Duic, V. (Trieste U.) ; Ferrero, A. (IRFU, Saclay) ; Finger, M. (Dubna, JINR) ; M Finger Jr , M.Finger Jr (Dubna, JINR) ; Fischer, H. (Freiburg U.) ; Franco, C. (Lisbon, CFTP) ; Gerassimov, S. (Munich, Tech. U.) ; Gobbo, B. (INFN, Trieste) ; Gregori, M. (INFN, Trieste) ; Herrmann, F. (Freiburg U.) ; Ketzer, B. (Bonn U.) ; Königsmann, K. (Freiburg U.) ; Konorov, I. (Munich, Tech. U.) ; Kunne, F. (IRFU, Saclay) ; Levorato, S. (INFN, Trieste) ; Maggiora, A. (INFN, Turin) ; Makke, N. (Trieste U.) ; Martin, A. (Trieste U.) ; Menon, G. (INFN, Trieste) ; Neyret, D. (IRFU, Saclay) ; Novakova, K. (Liberec Tech. U.) ; Panzieri, D. (Piemonte Orientale U., Alessandria) ; Paul, S. (Munich, Tech. U.) ; Pereira, F.A. (INFN, Trieste) ; Polak, J. (INFN, Trieste) ; Rocco, E. (INFN, Trieste) ; Santos, C.A. (INFN, Trieste) ; Sbrizzai, G. (Trieste U.) ; Schiavon, P. (Trieste U.) ; Schopferer, S. (Freiburg U.) ; Slunecka, M. (Turin U.) ; Sozzi, F. (INFN, Trieste) ; Steiger, L. (Liberec Tech. U.) ; Sulc, M. (Liberec Tech. U.) ; Takekawa, S. (INFN, Turin)

Published in: JINST
Year: 2014
Vol.: 9
Page No: C09011
Pages: 27
Year: 2014

Abstract: COMPASS RICH-1 is a large size gaseous Imaging Cherenkov Detector providing hadron identification in the range from 3 to 55 GeV/c, in the wide acceptance spectrometer of the COMPASS Experiment at CERN SPS. It uses a 3 m long C(4)F(10) radiator, a 21 m(2) large VUV mirror surface and two kinds of photon detectors: MAPMTs and MWPCs with CsI photocathodes, covering a total of 5.5 m(2). It is in operation since 2002 and its performance increased thanks to progressive optimization and to a major upgrade of its photon detection system, implemented in 2006, a new upgrade is foreseen for 2016, with the use of MPGD-based photon detectors. The main characteristics of COMPASS RICH-1 components are described and the most critical aspects related to the C(4)F(10) radiator gas system, to the mirrors and their alignment, as well as the performance of the photon detectors are presented and discussed. The response of the MWPCs and the observed evolution of the effective quantum efficiency of the CsI photocathodes is analyzed. The properties and performance of the MAPMTs with individual fused lens telescopes are presented together with the readout characteristics. The PID performance of COMPASS RICH-1 is discussed and the future upgrade program is mentioned.

Keyword(s): Particle identification methods ; Cherenkov detectors ; Photon detectors for UV, visible and IR photons (gas) ; Photon detectors for UV, visible and IR photons (vacuum)

Total numbers of views: 1100
Numbers of unique views: 431
DOI: 10.1088/1748-0221/9/09/C09011
 Record created 2014-10-01, last modified 2014-10-01



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