A Compact Gas Cerenkov Detector with Novel Optics
Michael Sivertz (U.C. San Diego), Bruce Berger, Richard Ehrlich, (Cornell University), John Bartlet, Steven Csorna, Vivek Jain, Szabolcs Marka, (Vanderbilt University), Kay Kinoshita, Paula Pomianowski (Virginia, Polytechnic Institute, State University)
TL;DR
This paper presents a novel, compact gas Cerenkov detector design with innovative optics, demonstrating effective particle identification for high-energy physics experiments through simulation and cosmic ray testing.
Contribution
It introduces a new optical system for a gas Cerenkov detector that is compact, low-material, and effective for charged hadron identification.
Findings
Good agreement between measurements and Monte Carlo simulations.
Achieves pion-kaon separation at 2.5-3.0 sigma in 0.8-2.8 GeV/c range.
Predicted effective performance for physics analyses.
Abstract
We discuss the design and performance of a threshold Cerenkov counter for identification of charged hadrons. The radiator is pressurized gas, which is contained in thin-walled cylindrical modules. A mirror system of novel design transports Cerenkov photons to photomultiplier tubes. This system is compact, contains relatively little material, and has a large fraction of active volume. A prototype of a module designed for the proposed CLEO III detector has been studied using cosmic rays. Results from these studies show good agreement with a detailed Monte Carlo simulation of the module and indicate that it should achieve separation of pions and kaons at the 2.5-3.0sigma level in the momentum range 0.8-2.8 GeV/c. We predict performance for specific physics analyses using a GEANT-based simulation package.
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