A COMPACT DETECTOR FOR THE MEASUREMENT OF THE COSMIC-RAY MUON CHARGE RATIO

Authors
VULPESCU B WENTZ J BRANCUS IM REBEL H BADEA AF BOZDOG H DUMA M HAUNGS A MATHES HJ PETCU M ROTH M
Citation
B. Vulpescu et al., A COMPACT DETECTOR FOR THE MEASUREMENT OF THE COSMIC-RAY MUON CHARGE RATIO, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 414(2-3), 1998, pp. 205-217
Citations number
43
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
414
Issue
2-3
Year of publication
1998
Pages
205 - 217
Database
ISI
SICI code
0168-9002(1998)414:2-3<205:ACDFTM>2.0.ZU;2-I
Abstract
A compact sampling calorimeter is developed and used to measure the ra tio between positive and negative muons in the cosmic-ray flux at mome nta below 1 GeV/c. The delayed coincidence method is used, based on th e reduced mean lifetime of negative muons due to nuclear capture in ma tter. It is shown that aluminum is a good choice as a capture medium f or negative muons and suitable for a simple detector set-up. The muon charge ratio is found to be 1.30 +/- 0.05 for a mean momentum of 0.86 GeV/c and over a zenith angle acceptance with Theta(mean) = 26 degrees . (C) 1998 Elsevier Science B.V. All rights reserved.