Extended Measurement of Cosmic-Ray Electron and Positron Spectrum from CALET on the ISS

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dc.contributor.authorTorii, S.
dc.contributor.authorAsaoka, Y.
dc.contributor.authorCannady, Nicholas
dc.contributor.authorHams, Thomas
dc.contributor.authorKrizmanic, John F.
dc.contributor.authorSakai, Kenichi
dc.contributor.authorCALET Collaboration
dc.contributor.authoret al
dc.date.accessioned2022-08-10T21:11:07Z
dc.date.available2022-08-10T21:11:07Z
dc.date.issued2021-07-02
dc.description36th International Cosmic Ray Conference -ICRC2019- July 24th - August 1st, 2019 Madison, WI, U.S.A.en_US
dc.descriptionCALET Collaboration Authors: O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, E. Berti, G. Bigongiari, W. R. Binns, M. Bongi, P. Brogi, A. Bruno, J. H. Buckley, N. Cannady, G. Castellini, C. Checchia, M. L. Cherry, G. Collazuol, K. Ebisawa, A. W. Ficklin, H. Fuke, S. Gonzi, T. G. Guzik, T. Hams, K. Hibino, M. Ichimura, K. Ioka, W. Ishizaki, M. H. Israel, K. Kasahara, J. Kataoka, R. Kataoka, Y. Katayose, C. Kato, N. Kawanaka, Y. Kawakubo, K. Kobayashi, K. Kohri, H. S. Krawczynski, J. F. Krizmanic, P. Maestro, P. S. Marrocchesi, A. M. Messineo, J.W. Mitchell, S. Miyake, A. A. Moiseev, M. Mori, N. Mori, H. M. Motz, K. Munakata, S. Nakahira, J. Nishimura, G. A. de Nolfo, S. Okuno, J. F. Ormes, N. Ospina, S. Ozawa, L. Pacini, P. Papini, B. F. Rauch, S. B. Ricciarini, K. Sakai, T. Sakamoto, M. Sasaki, Y. Shimizu, A. Shiomi, P. Spillantini, F. Stolzi, S. Sugita, A. Sulaj, M. Takita, T. Tamura, T. Terasawa, S. Torii, Y. Tsunesada, Y. Uchihori, E. Vannuccini, J. P. Wefel, K. Yamaoka, S. Yanagita, A. Yoshida, K. Yoshida, and W. V. Zober
dc.description.abstractThe CALET (CALorimetric Electron Telescope), launched to the International Space Station (ISS) on August 19, 2015 and accumulating scientific data since October 13, 2015, is an all-calorimetric instrument with total vertical thickness of 30 radiation lengths and fine imaging capability, optimized for a measurement of the electron and positron (all-electron) spectrum well into the TeV energy region. CALET will allow for the detailed search for various spectral structures of high-energy all-electron cosmic rays, perhaps providing the first experimental evidence of the presence of a nearby astrophysical cosmic-ray source. All-electron spectrum analysis starts with detailed detector calibrations covering from detector alignment to energy determination, followed by electron event selection and flux normalization. Special care was taken to identify electrons in the presence of a large hadron background. Possible source of systematic errors are carefully surveyed, and associated uncertainties are estimated for each contribution. As a result, all-electron spectrum is obtained including the TeV energy range. In this contribution, we will present the all-electron spectrum measured by CALET and compare it with those obtained by other experiments.en_US
dc.description.sponsorshipWe gratefully acknowledge JAXA’s contributions to the development of CALET and to the operations onboard the International Space Station. We also wish to express our sincere gratitude to ASI and NASA for their support of the CALET project. This work was supported in part by a JSPS Grant-in-Aid for Scientific Research (S) (No. 26220708) and by the MEXT-Supported Program for the Strategic Research Foundation at Private Universities (No. S1101021) at Waseda University.en_US
dc.description.urihttps://pos.sissa.it/358/142/en_US
dc.format.extent8 pagesen_US
dc.genreconference papers and proceedingsen_US
dc.identifierdoi:10.13016/m2chgv-un5j
dc.identifier.citation“Extended Measurement of Cosmic-Ray Electron and Positron Spectrum from CALET on the ISS,” S. Torii and Y. Asaoka for the CALET Collaboration, Proceedings of Science: 36th International Cosmic Ray Conference, (Madison, WI), 142 (2019). https://doi.org/10.22323/1.358.0142en_US
dc.identifier.urihttps://doi.org/10.22323/1.358.0142
dc.identifier.urihttp://hdl.handle.net/11603/25357
dc.language.isoen_USen_US
dc.publisherProceedings of Scienceen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleExtended Measurement of Cosmic-Ray Electron and Positron Spectrum from CALET on the ISSen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-2916-6955en_US

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