Comparison of CORSIKA and COSMOS simulations
Soonyoung Roh, Jihee Kim, Katsuaki Kasahara, Eiji Kido, Akimichi, Taketa, Dongsu Ryu, Hyesung Kang
TL;DR
This paper compares two Monte Carlo simulation codes, CORSIKA and COSMOS, used in ultra-high-energy cosmic ray experiments to understand differences in their predictions of extensive air showers.
Contribution
It provides a detailed comparison of CORSIKA and COSMOS simulations, highlighting their differences in key air shower parameters.
Findings
Differences in longitudinal distribution predictions
Variations in Xmax-value estimates
Discrepancies in ground energy spectrum
Abstract
Ultra-high-energy cosmic rays (UHECRs) refer to cosmic rays with energy above 10^{18} eV. UHECR experiments utilize simulations of extensive air shower to estimate the properties of UHECRs. The Telescope Array (TA) experiment employs the Monte Carlo codes of CORSIKA and COSMOS to obtain EAS simulations. In this paper, we compare the results of the simulations obtained from CORSIKA and COSMOS and report differences between them in terms of the longitudinal distribution, Xmax-value, calorimetric energy, and energy spectrum at ground.
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