Speaker
Dr
Michiko Ohishi
(Institute for Cosmic Ray Research, University of Tokyo)
Description
Very high energy (VHE) interaction between cosmic-ray proton and nuclei in the atmosphere is still not perfectly understood and efforts to improve interaction models used in simulations are ongoing, with feedback from various collider and air shower experiments.
Imaging Atmospheric Cherenkov Telescopes (IACTs) are indirect VHE gamma-ray detectors on the ground and cosmic-ray proton is a major background to gamma-ray measurements in these systems. Rejection power of background protons determines most part of the gamma-ray sensitivity curve of IACTs.
As for an IACT system in design phase, simulated proton events are used to estimate the residual background level. We investigated the influence of the uncertainty in the current hadronic interaction models on the estimated gamma-ray sensitivity of Cherenkov Telescope Array, using several interaction models available in CORSIKA.
Primary author
Dr
Michiko Ohishi
(Institute for Cosmic Ray Research, University of Tokyo)
Co-authors
Abelardo Moralejo
(Institut de Fisica d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology)
Gernot Maier
(Deutsches Elektronen-Synchrotron)
Johan Bregeon
(Laboratoire Univers et Particules de Montpellier, Université de Montpellier, CNRS/IN2P3)
Konrad Bernlöhr
(Max-Planck-Institut für Kernphysik)
Luan Arbeletche
(Instituto de Física de São Carlos, Universidade de São Paulo)
Luisa Arrabito
(Laboratoire Univers et Particules de Montpellier, Université de Montpellier, CNRS/IN2P3)
Takanori Yoshikoshi
(Institute for Cosmic Ray Research, University of Tokyo)
Vitor de Souza
(Instituto de Física de São Carlos, Universidade de São Paulo)
