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Measurements of Heavy Cosmic-Ray Nuclei Spectra with CALET on the ISS

Status Report From: arXiv.org e-Print archive
Posted: Monday, April 1, 2019

Yosui Akaike (for the CALET Collaboration)

(Submitted on 31 Mar 2019)

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 fiber 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.

Comments: 6 pages, 10 figures, a contribution to the proceedings of 26th Extended European Cosmic Ray Symposium, 6-10 July 2018, Russia

Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

Journal reference: J. Phys.: Conf. Ser. 1181 (2019) 012042

DOI: 10.1088/1742-6596/1181/1/012042

Cite as: arXiv:1904.00372 [astro-ph.HE] (or arXiv:1904.00372v1 [astro-ph.HE] for this version)

Submission history

From: Yosui Akaike

[v1] Sun, 31 Mar 2019 10:03:02 UTC (835 KB)

https://arxiv.org/abs/1904.00372

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