title: Air shower simulation for WASAVIES: warning system for aviation exposure to solar energetic particles.
abstract: WASAVIES, a warning system for aviation exposure to solar energetic particles (SEPs), is under development by collaboration between several institutes in Japan and the USA. It is designed to deterministically forecast the SEP fluxes incident on the atmosphere within 6 h after flare onset using the latest space weather research. To immediately estimate the aircrew doses from the obtained SEP fluxes, the response functions of the particle fluxes generated by the incidence of monoenergetic protons into the atmosphere were developed by performing air shower simulations using the Particle and Heavy Ion Transport code system. The accuracy of the simulation was well verified by calculating the increase count rates of a neutron monitor during a ground-level enhancement, combining the response function with the SEP fluxes measured by the PAMELA spectrometer. The response function will be implemented in WASAVIES and used to protect aircrews from additional SEP exposure.
authors.affiliation: Japan Atomic Energy Agency, Shirakata-Shirane 2-4, Tokai, Ibaraki 319-1195, Japan sato.tatsuhiko@jaea.go.jp.
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.affiliation: National Institute of Polar Research, Midoricho 10-3, Tachikawa, Tokyo 190-8518, Japan Tokyo Institute of Technology, Ookayama 2-12-1, Meguro, Tokyo 152-8550, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Kataoka
authors.affiliation: National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba 263-8555, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yasuda
authors.affiliation: The Catholic University of America, 620 Michigan Av. Northeast, Washington, DC 20064, USA.
authors.forename: S
authors.initials: S
authors.lastname: Yashiro
authors.affiliation: University of Delaware, 401 Academy St., Newark, DE 19716, USA.
authors.forename: T
authors.initials: T
authors.lastname: Kuwabara
authors.affiliation: Solar-Terrestrial Environment Laboratory, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Shiota
authors.affiliation: National Institute of Information and Communications Technology, Nukui-kita 4-2-1, Koganei, Tokyo 184-8795, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kubo
mesh_terms: D000337:Aerospace Medicine; D000401:Aircraft; D000465:Algorithms; D001359:Aviation; D003198:Computer Simulation; D003359:Cosmic Radiation; D006801:Humans; D007564:Japan; D009502:Neutrons; D016273:Occupational Exposure; D011522:Protons; D011829:Radiation Dosage; D011835:Radiation Protection; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D019445:Solar Activity; D014481:United States
chemical_list: D011522:Protons