A measurement of the energy spectra of cosmic rays from 20 to 1000 GeV per AMU

Details A measurement of the energy spectra of cosmic rays from 20 to 1000 GeV per AMU A measurement of the energy spectra of cosmic rays from 20 to 1000 GeV per AMU

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991alab.reptq....g&link_type=abstract

Semiannual Report Alabama Univ., Huntsville.

Computer Science

Cosmic Rays, Energy Spectra, Gas Spectroscopy, Interstellar Matter, Spectrum Analysis, Balloon Flight, Cerenkov Counters, Iron, Nucleons, Oxygen, Photomultiplier Tubes, Radiance

Scientific paper

A group collaboration was made in the development of the Bristol University Gas Spectrometer number 4 (BUGS 4). The BUGS 4 detector is designed to measure the charge spectrum for species between oxygen and the iron peak as a function of energy per nucleon, between 20 and 1000 GeV/amu. It is particularly concerned with energies above 50 GeV/amu. The high energy component is considerably less affected by propagation through the interstellar medium than the lower energy component and is expected to approach the original charge spectrum of the source more closely. This information allows one to unravel the effects of cosmic ray production, acceleration, and propagation. The detector is described in total detail. The method of estimating the charge and energy of a cosmic ray depends on the energy of the particle. Calculations and experiments lead to the expectation of a nearly constant charge resolution of about 0.2 charge units over the whole energy range except 4.5 less than gamma less than 20. In this band, the experiment is insensitive to energy. A balloon flight is planned in 1993.

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