CALET for High Energy Electron and Gamma

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CALET for High Energy Electron and Gamma-Ray Measurements on ISS

Shoji Torii A , Fumiyoshi Makino A , Nobuto Tateyama A , Tadahisa Tamura A , Toshisuke

Kashiwagi A , Kenji Yoshida A , Shoji Okuno A , Kinya Hibino A , Kazuaki Anraku AB , Taro

Yamashita AB , Jun Nishimura C , Takamasa Yamagami C , Yoshitaka Saito C , Masahiro

Takayanagi C , Makio Shibata D , Yusaku Katayose D , Yukio Uchihori E , Hisashi Kitamura E ,

Katsuaki Kasahara F , Kohei Mizutani G , Hiroyuki Murakami H , Tadashi Kobayashi I , Yoshiko

Komori J , Toshinori Yuda K , Wei Qun Gan L , and Jin Chang L

A Kanagawa University, Yokohama , Kanagawa 221-8686 , Japan

B Japan Space Forum, Tokyo 105-0013, Japan

C Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 229-8510, Japan

D Yokohama National University, Yokohama, Kanagawa 240-8501, Japan

E National Institute of Radiological Science, Inage, Chiba 263-8555, Japan

F Shibaura Institute of Technology, Omiya, Saitama 330-8570, Japan

G Saitama University, Urawa, Saitama 338-0825, Japan

H Rikkyo University, Tokyo 171-8501, Japan

I Aoyamagakuin University, Sagamihara , Kanagawa 229-8558, Japan

J Kanagawa University of Human Services, Yokosuka, Kanagawa 238-0013, Japan

K University of Tokyo ICRC, Kashiwa Chiba 277-8582, Japan

L Purple Mountain Observatory, Nanjing 210008, China

E-Mail: torii@phu2.n.kanagawa-u.ac.jp

Abstract: We are proposing the CALET mission for the ISS-JEM/EF. Major goal of the mission is the investigation of high energy phenomena in universe by observing the electrons in 1 GeV ~ 10 TeV, the gamma rays in 20 MeV ~ 10 TeV, and the nuclei in 1 TeV ~ 1000 TeV. The detector consists of an imaging calorimeter (IMC) using scintillating fibers and a total absorption calorimeter (TASC). It has a capability of the proton-rejection power of 10 6 for electrons, and the geometrical factor is nearly 1 m 2 sr.

Outline of the detector system including the electronics will be reported along with the scientific capabilities..

Key words; Cosmic Ray, , High Energy Electron, Gamma Ray, Scintillating Fiber,

International Space Station

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