A RICH detector for hadron identification at Jlab
The “standard” Hall A apparatus at Jefferson Lab (TOF and aerogel threshold Cherenkov detectors) does not provide complete identification for proton, kaon and pion. To this aim, a proximity focusing C6F14/CsI RICH (Ring Image Cherenkov) detector has been designed, built, tested and operated to separate kaons from pions with a pion contamination of a few percent up to 2.4 GeV/c. Two quite different experimental investigations have benefitted of the RICH identification: on one side, the high-resolution hypernuclear spectroscopy series of experiments on carbon, beryllium and oxygen, devoted to the study of the lambda-nucleon potential. On the other side, the measurements of the single spin asymmetries of pion and kaon on a transversely polarized 3He target are of utmost interest in understanding QCD dynamics in the nucleon. We present the technical features of such a RICH detector and comment on the presently achieved performance in hadron identification.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1023019
- Report Number(s):
- JLAB-PHY-11-1364; DOE/OR/23177-1754; TRN: US1104445
- Journal Information:
- Applied Radiation and Isotopes, Vol. 69, Issue 8; Conference: 6th CHERNE Workshop, Coimbra, Portugal, 07-09 June 2010
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BERYLLIUM
CARBON
CHERENKOV COUNTERS
CONTAMINATION
FOCUSING
HADRONS
KAONS
OXYGEN
PERFORMANCE
PIONS
QUANTUM CHROMODYNAMICS
SPECTROSCOPY
SPIN
TARGETS
Low and intermediate energy hadrons
Position-sensitive detectors
Particle identification