CAET Mission on the ISS

Shoji Torii*, M. Hareyama, Nobuyuki Hasebe, K. Kasahara, S. Kobayashi, S. Kodaira, H. Murakami, Shunsuke Ozawa, S. Udo, N. Yamashita, K. Ebisawa, H. Fuke, J. Nishimura, Y. Saito, M. Takayanagi, H. Tomida, S. Ueno, T. Yamagami, K. Hibino, S. OkunoT. Tamura, N. Tateyama, T. Kobayashi, T. Kotani, K. Yamaoka, A. Yoshida, Y. Shimizu, M. Takita, T. Yuda, Y. Katayose, M. Shibata, E. Kamioka, A. Kubota, K. Yoshida, M. Ichimura, S. Kuramata, Y. Tunesada, T. Terasawai, H. Kitamura, Y. Uchihori, Y. Komori, K. Mizutani, K. Munakata, A. Shiomi, J. W. Michell, A. J. Ericsson, T. Hams, J. F. Krizmanic, A. A. Moissev, M. Sasaki, J. F. Ormes, M. L. Cherry, T. G. Guzik, J. P. Wefel, W. R. Binns, M. H. Israel, H. Krawzczynski, P. S. Marrocchesi, M. G. Gagliesi, G. Bigongiari, A. Caldarone, M. Y. Kim, R. Cecchi, P. Maestro, V. Millucci, R. Zei, C. Avanzini, T. Avanzini, A. Messine, F. Morsani, O. Adriani, L. Bonechi, P. Papini, E. Vannuccini, J. Chan, W. Gan, T. Lu, Y. Ma, H. Wang, G. Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)


We are developing the CALorimetric Electron Telescope, CALET, mission for the Japanese Experiment Module Exposed Facility, JEM-EF, of the International Space Station. Major scientific objectives are to search for the nearby cosmic ray sources and dark matter by carrying out a precise measurement of the electrons in 1 GeV - 20 TeV and gamma rays in 20 MeV - several 10 TeV. CALET has a unique capability to observe electrons and gamma rays over 1 TeV since the hadron rejection power can be larger than 105 and the energy resolution better than a few % over 100 GeV. The detector consists of an imaging calorimeter with scintillating fibers and tungsten plates and a total absorption calorimeter with BGO scintillators. CALET has also a capability to measure cosmic ray H, He and heavy ions up to 1000 TeV. It also will have a function to monitor solar activity and gamma ray transients. The phase A study has started on a schedule of launch in 2013 by H-II Transfer Vehicle (HTV) for 5 year observation.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2008
EventHigh Energy, Optical, and Infrared Detectors for Astronomy III - Marseille
Duration: 2008 Jun 232008 Jun 26


OtherHigh Energy, Optical, and Infrared Detectors for Astronomy III


  • Calorimeter
  • cosmic ray
  • Dark matter
  • Diffuse gamma ray
  • Gamma ray burst
  • High energy
  • ISS
  • Solar modulation

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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