ALICE, A Large Ion Collider Experiment, at the LHC collider operated with heavy-ion beams, envisages a Ring Imaging Cherenkov detector (RICH) system to identify particles in the momentum range: .7 GeV/c divided by 2.5 GeV/c, as an alternative to a time of flight (TOF). In 1992 an extensive R&D programm was started to design and optimize a fast RICH detector based on proximity focusing of the Cherenkov radiation on a wire chamber with a Cesium Iodide solid photocathode. The implementation of an analog pad read-out scheme provides two dimensional information and efficient discrimination between ionising particle and Cherenkov photoelectron impact points. After a discussion on the requirements, a description of the first large area prototype follows. Results of a beam test and detector performances are finally reported together with future developments and engineering issues.

Design of a large area fast RICH detector with CsI photocathode for particle identification at ALICE-LHC

TRICOMI, Alessia Rita;
1995-01-01

Abstract

ALICE, A Large Ion Collider Experiment, at the LHC collider operated with heavy-ion beams, envisages a Ring Imaging Cherenkov detector (RICH) system to identify particles in the momentum range: .7 GeV/c divided by 2.5 GeV/c, as an alternative to a time of flight (TOF). In 1992 an extensive R&D programm was started to design and optimize a fast RICH detector based on proximity focusing of the Cherenkov radiation on a wire chamber with a Cesium Iodide solid photocathode. The implementation of an analog pad read-out scheme provides two dimensional information and efficient discrimination between ionising particle and Cherenkov photoelectron impact points. After a discussion on the requirements, a description of the first large area prototype follows. Results of a beam test and detector performances are finally reported together with future developments and engineering issues.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/53289
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