An instrument to measure the spectrum of cosmic ray iron and other nuclei to above 100 GeV/nucleon

Details An instrument to measure the spectrum of cosmic ray iron and other nuclei to above 100 GeV/nucleon An instrument to measure the spectrum of cosmic ray iron and other nuclei to above 100 GeV/nucleon

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ssi.....4..303a&link_type=abstract

Space Science Instrumentation, vol. 4, Apr. 1979, p. 303-320. Bundesministerium für Forschung und Technologie

Computer Science

2

Balloon-Borne Instruments, Cerenkov Counters, Cosmic Rays, Energetic Particles, Heavy Nuclei, Iron, Spectrometers, Calorimeters, Charge Distribution, Ionization Chambers, Monte Carlo Method, Particle Telescopes, Particle Trajectories, Phototubes, Ultraviolet Filters

Scientific paper

A balloon-borne instrument system for the study of cosmic ray composition in the energy region beyond 100 GeV/nucleon is described. The large area detector incorporates an ionization spectrometer or calorimeter to determine the energy of the incident particles which is calibrated in flight by a gas Cerenkov counter filled with freon 12 at 20 psi. Calibration of calorimeter response indicates that the effects of ionization energy loss and nucleon fragmentation are correctly accounted for in a Monte Carlo simulation. A charge measuring module consisting of five scintillators and a lucite Cerenkov counter is used to determine the charge and position of the incoming particles. A spatial resolution of 5 to 10 cm has been obtained by using the ratios of pulse heights in different photomultiplier tubes aimed at the same scintillators within the module. The detector represents the heaviest cosmic ray experiment that can be flown over 30 km using the dynamic launching technique commonly employed.

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