Identification of antiprotons in space using a compact RICH counter

Author

Francke, Tom ; Suffert, Martin ; Carlson, Per

Author_Institution

CRN, Strasbourg, France

fYear

1991

fDate

2-9 Nov. 1991

Firstpage

1153

Abstract

A compact RICH (ring imaging Cherenkov) counter has been developed that has a very good separation power (10/sup -4/) between antiprotons and pions/muons up to 6 GeV/c momentum at perpendicular incidence and up to 2.3 GeV/c momentum at 25 degrees incidence angle of the particle. It uses a solid radiator of NaF and a photosensitive MWPC (multiwire proportional chamber) with pad readout to detect the faint Cherenkov light. Twenty photoelectrons are detected per event for beta =0.94 particles and 12 for beta =1 particles at perpendicular incidence. Such a detector will be used in a balloon-borne spectrometer to measure the energy spectrum of antiprotons and positrons in cosmic rays up to 6 GeV kinetic energy.<>

Keywords

Cherenkov counters; cosmic ray apparatus; cosmic ray energy spectra; cosmic ray protons; position sensitive particle detectors; proportional counters; time of flight spectrometers; 2.3 to 6 GeV; NaF; antiprotons; balloon-borne spectrometer; compact RICH counter; cosmic rays; energy spectrum; multiwire proportional chamber; pad readout; photosensitive MWPC; positrons; ring imaging Cherenkov counter; solid radiator; Cosmic rays; Counting circuits; Detectors; Energy measurement; Event detection; Kinetic energy; Mesons; Positrons; Solids; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE

Conference_Location

Santa Fe, NM, USA

Print_ISBN

0-7803-0513-2

Type

conf

DOI

10.1109/NSSMIC.1991.259104

Filename

259104