CALET Results after Three Years on Orbit on the International Space Station
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c Pleiades Publishing, Ltd., 2019. pp. 766–772.
ELEMENTARY PARTICLES AND FIELDS Experiment
CALET Results after Three Years on Orbit on the International Space Station P. Maestro1), 2)* , O. Adriani3), 4) , Y. Akaike5), 6) , Y. Asaoka7), 8) , E. Berti3), 4) , G. Bigongiari1), 2) , M. Bongi3), 4) , P. Brogi1), 2) , A. Bruno9), N. Cannady5), 6) , C. Checchia3), 4) , M. L. Cherry10), G. Collazuol11), 12) , T. G. Guzik10) , M. Ichimura13), M. H. Israel14) , K. Kasahara15), Y. Kawakubo10), J. F. Krizmanic5), 6) , P. S. Marrocchesi1), 2) , A. M. Messineo2), 16) , J. W. Mitchell17), S. Miyake18), M. Mori19), N. Mori4) , H. M. Motz20) , K. Munakata21), L. Pacini4) , F. Palma22), 23) , P. Papini4) , B. F. Rauch14), S. B. Ricciarini4), 24) , T. Sakamoto25), M. Sasaki5), 6) , F. Stolzi1), 2) , A. Sulaj1), 2) , T. Tamura26), S. Torii7), 8), 27) , J. P. Wefel10) , and K. Yoshida15) (on behalf of the CALET Collaboration) Received August 23, 2019; revised October 14, 2019; accepted October 14, 2019
Abstract—The CALorimetric Electron Telescope (CALET) is an astroparticle physics experiment installed on the International Space Station since August 2015. The CALET mission was conceived to address several outstanding questions of high-energy astroparticle physics, like indirect detection of dark matter, the origin of cosmic rays (CRs), their mechanisms of acceleration and galactic propagation, the presence of possible nearby astrophysical CR sources. That can be achieved by precise measurements of the fluxes of CR electrons and γ rays up to the unexplored region above 1 TeV, and the energy spectra and composition of CR nuclei from a few tens of GeV to hundreds of TeV. In order to perform these observations, the instrument combines a thick total absorption PWO crystal calorimeter for energy measurement, a scintillator hodoscope for charge identification and thin imaging tungsten-scintillating fiber calorimeter providing accurate particle tracking and complementary charge measurement. In this paper, we will present an overview of the main CALET results based on the data collected in the first three years of the mission. DOI: 10.1134/S1063778819660384
1)
Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, Siena, 53100 Italy. 2) INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo 3, Pisa, 56127 Italy. 3) Department of Physics, University of Florence, Via Sansone 1, Sesto Fiorentino, 50019 Italy. 4) INFN Sezione di Florence, Via Sansone 1, Sesto Fiorentino, 50019 Italy. 5) CRESST and Astroparticle Physics Laboratory NASA/GSFC, Greenbelt, MD, 20771 USA. 6) Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250 USA. 7) Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555 Japan. 8) JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki, 305-8505 Japan. 9) Heliospheric Science Division, NASA/Goddard Space Flight Center
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