Measurements of heavy cosmic-ray nuclei spectra with CALET on the ISS

Yosui Akaike*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)


CALorimetric Electron Telescope (CALET) has been accumulating data of high-energy cosmic rays on the International Space Station since August 2015. In addition to the primary observation of the all-electron spectra, CALET also measures the spectra of nuclei, their relative abundances and secondary-to-primary ratios to the highest energy region ever directly observed in order to investigate details of their origin and propagation in the galaxy. The CALET instrument consists of two layers of segmented plastic scintillators to identify the individual elements from Z = 1 to 40, a 3 radiation length thick tungsten-scintillating ber imaging calorimeter to obtain complementary charge and tracking information, and a 27 radiation length thick segmented PWO calorimeter to measure the energy. In this paper, the capability of CALET to perform nuclei measurements and preliminary energy spectra of heavy nuclei components using 962 days of data is presented.

Original languageEnglish
Article number012042
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2019 Mar 10
Externally publishedYes
Event26th Extended European Cosmic Ray Symposium, E+CRS 2018 - Barnaul-Belokurikha, Russian Federation
Duration: 2018 Jul 62018 Jul 10

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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