Abstract
The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma rays up to 10 TeV, of nuclei with Z from 1 to 40 up to 1 PeV energy, and will detect gamma-ray bursts in the 7 keV to 20 MeV energy range during a 5 year mission. These measurements are essential to investigate possible nearby astrophysical sources of high energy electrons, study the details of galactic particle propagation and search for dark matter signatures. The main detector of CALET, the Calorimeter, consists of a module to identify the particle charge, followed by a thin imaging calorimeter (3 radiation lengths) with tungsten plates interleaving scintillating fibre planes, and a thick energy measuring calorimeter (27 radiation lengths) composed of lead tungstate logs. The Calorimeter has the depth, imaging capabilities and energy resolution necessary for excellent separation between hadrons, electrons and gamma rays. The instrument is currently being prepared for launch (expected in 2015) to the International Space Station ISS, for installation on the Japanese Experiment Module - Exposure Facility (JEM-EF).
Highlights
The CALorimetric Electron Telescope CALET [1] [2] will be installed on the International Space Station (ISS) in 2015, with the aim of performing accurate and long-duration observations of highenergy cosmic radiation, including charged particles and photons
An overview of the CALET mission and apparatus is given in Sect. 2, while Sect. 3 contains a selection of major science items which will be addressed by CALET
2.2 CGBM instrument The CGBM instrument [6] is dedicated to observation of gamma-ray bursts (GRB) and other X/gamma-ray transient phenomena, with a broad energy coverage from hard X-rays to soft gammarays, in the range from 7 keV to 20 MeV; these data can be correlated with simultaneous gamma-ray observations of CALET-CAL instrument in the region from few GeV to several TeV
Summary
The CALorimetric Electron Telescope CALET [1] [2] will be installed on the International Space Station (ISS) in 2015, with the aim of performing accurate and long-duration observations of highenergy cosmic radiation, including charged particles and photons. An overview of the CALET mission and apparatus is given, while Sect. 3 contains a selection of major science items which will be addressed by CALET An overview of the CALET mission and apparatus is given in Sect. 2, while Sect. 3 contains a selection of major science items which will be addressed by CALET
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