Physics
Scientific paper
Sep 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7633121j&link_type=abstract
Unknown
Physics
Calorimeters, Cosmic Rays, Energy Spectra, Electron Photon Cascades, Ionization, Monte Carlo Method, Particle Interactions, Power Spectra, Protons, Reliability Analysis
Scientific paper
The reliability of performing measurements of cosmic ray energy spectra with a thin ionization calorimeter was investigated. Monte Carlo simulations were used to determine whether energy response fluctuations would cause measured spectra to be different from the primary spectra. First, Gaussian distributions were assumed for the calorimeter energy resolutions. The second method employed a detailed Monte Carlo simulation of cascades from an isotropic flux of protons. The results show that as long as the energy resolution does not change significantly with energy, the spectral indices can be reliably determined even for sigmae/e = 50%. However, if the energy resolution is strongly energy dependent, the measured spectra do not reproduce the true spectra. Energy resolutions greatly improving with energy result in measured spectra that are too steep, while resolutions getting much worse with energy cause the measured spectra to be too flat.
Jones Vernon W.
Ormes J. S.
Schmidt Wolfgang K. H.
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