Year: 2025
Type: conference-paper
Abstract: The CALorimetric Electron Telescope (CALET) is a space-based calorimetric instrument, designed to carry out precise measurements of high energy cosmic rays. Installed on the Japanese Experiment Module - Exposed Facility on the ISS, it is collecting data with excellent performance and no significant interruptions since October 2015. We present the updated results of the direct measurement of the energy spectrum of cosmic-ray helium, based on more than 9 years of collected data, with an expected statistical increase of about 40% compared with the previously published measurement. The helium flux shows significant deviations from a single power law with a progressive hardening around a few hundred GeV followed by a softening in the multi-TeV region. The increase in statistics allows to extend the upper limit of the measured energy range and to improve the precision of the measurement itself in the high energy part of the spectrum.
DOI: 10.22323/1.501.0019
Authors: Paolo Brogi, K. Kobayashi, M. Mattiazzi
Institution: University of Padua
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Aeronautics and Space Administration, University of Maryland, Baltimore County, University of Chicago, Nihon University, Louisiana State University, University of Denver, Università degli Studi di Siena, Ministry of Education, Culture, Sports, Science and Technology, Università degli Studi di Padova, Okinawa Institute of Science and Technology Graduate University, Waseda University, Università degli Studi di Firenze, University of Tokyo, Aoyama Gakuin University, Ritsumeikan University, Hirosaki University, Kanagawa University, National Astronomical Observatory of Japan, High Energy Accelerator Research Organization, Università di Pisa, Iran Telecommunication Research Center, Tokyo Metropolitan University, Goddard Space Flight Center, College of Science and Engineering, University of Minnesota, Japan Society for the Promotion of Science, Japan Aerospace Exploration Agency, National Institute of Information and Communications Technology, Institute of Space and Astronautical Science
Awards: G1220896492, G1386725143, ABSTRACT THE CALET (CALORIMETRIC ELECTRON TELESCOPE) MISSION TO THE ISS HAS BEEN UNDER DEVELOPMENT FOR THE PAST DECADE AS A JAPANESE LED INTERNATIONA, G2000598668, G2131571848, G2319172811, THIS IS A CO-I PROPOSAL THAT SHOULD BE CROSS-REFERENCED TO THE LOUISIANA STATE UNIVERSITY PROPOSAL TITLED "CALET: FLIGHT OPERATIONS AND DATA ANALYSIS, G3056662531, G4270588743, Long-term observations to study the origins of Galactic Cosmic Rays and search for Dark Matter with CALET, G5692548517, G6003493752, Establishing a new concept in cosmic ray physics from the Earth and Heliosphere to the Milky Way through long-term CALET observations, Research on the Acceleration and Propagation of Cosmic Rays by High-precision Direct Observation, 腐食疲れに対する設計基準の確立に関する研究, 粉体, 粒体等の水分の精密測定装置の研究, G8154076309, Search for nearby sources and dark matter signatures by precise measurement of cosmic-ray electrons in the TeV region
OpenAlex ID: W4414419524
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