Design and construction of the fast photon detection system for COMPASS RICH-1
Abbon, P. and Alexeev, M. and Angerer, H. and Birsa, R. and Bordalo, P. and Bradamante, F. and Bressan, A. and Chiosso, M. and Ciliberti, P. and Colan
Keywords
COMPASS_s19 RICH_s19 Multi-anode photo-multiplier_s19 Particle identification_s19 Quartz lens telescope
Abstract
New photon detectors, based on the use of multi-anode photo-multiplier tubes coupled to individual lens telescopes and read out with a dedicated read-out electronics system, equip the central region of the Cherenkov imaging counter RICH-1 of the COMPASS experiment at CERN SPS. They are characterised by high photon yield, fast response and high rate capability and are successfully in operation since the 2006 COMPASS data taking. The photon detection system fully matches the expected performance. The design and construction of the photon detectors are described in detail.
