CALET observation of nuclear components in primary cosmic rays

M. Ichimura, S. Kuramata, S. Torii, T. Tamura, Kenji Yoshida, K. Kasahara, J. Chang, H. Fuke, K. Hibino, T. Kashiwagi, Y. Katayose, H. Kitamura, T. Kobayashi, Y. Komori, F. Makino, K. Mizutani, H. Murakami, J. Nishimura, S. Okuno, Y. SaitoM. Shibata, M. Takayanagi, N. Tateyama, T. Terasawa, S. Tomida, Y. Uchihori, S. Ueno, T. Yamagami, T. Yuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Although CALET is originally designed for detections of electrons and gamma rays, nuclear components of primary cosmic rays, from protons to iron nucleus and more, are also observable by CALET, utilizing the total absorption calorimeter (TASC). TASC has 1.6 m.f.p. for protons which is enough to measure the energy of protons up to 1000 TeV. Using the observed spectra, the following items will be discussed: (1) the detailed structure of the spectrum, checking the change of the spectrum index and comparing indices of various components. More than 300 iron nuclei with the energy greater than 1 TeV/n will be observed. (2) secondary/primary ratio. Especially we can observe the both of B/C ratio and sub-Fe/Fe ratio. At the space station, the observation is free from the atmospheric contamination corrections. These observations are essential for the acceleration mechanisms and the propagation of cosmic rays.

Original languageEnglish
Title of host publication29th International Cosmic Ray Conference, ICRC 2005
PublisherTata Institute of Fundamental Research
Pages321-324
Number of pages4
Volume3
Publication statusPublished - 2005
Externally publishedYes
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune
Duration: 2005 Aug 32005 Aug 10

Other

Other29th International Cosmic Ray Conference, ICRC 2005
CityPune
Period05/8/305/8/10

Fingerprint

primary cosmic rays
calorimeters
protons
iron
space stations
nuclei
cosmic rays
rays
contamination
gamma rays
propagation
energy
electrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Ichimura, M., Kuramata, S., Torii, S., Tamura, T., Yoshida, K., Kasahara, K., ... Yuda, T. (2005). CALET observation of nuclear components in primary cosmic rays. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 3, pp. 321-324). Tata Institute of Fundamental Research.

CALET observation of nuclear components in primary cosmic rays. / Ichimura, M.; Kuramata, S.; Torii, S.; Tamura, T.; Yoshida, Kenji; Kasahara, K.; Chang, J.; Fuke, H.; Hibino, K.; Kashiwagi, T.; Katayose, Y.; Kitamura, H.; Kobayashi, T.; Komori, Y.; Makino, F.; Mizutani, K.; Murakami, H.; Nishimura, J.; Okuno, S.; Saito, Y.; Shibata, M.; Takayanagi, M.; Tateyama, N.; Terasawa, T.; Tomida, S.; Uchihori, Y.; Ueno, S.; Yamagami, T.; Yuda, T.

29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. p. 321-324.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ichimura, M, Kuramata, S, Torii, S, Tamura, T, Yoshida, K, Kasahara, K, Chang, J, Fuke, H, Hibino, K, Kashiwagi, T, Katayose, Y, Kitamura, H, Kobayashi, T, Komori, Y, Makino, F, Mizutani, K, Murakami, H, Nishimura, J, Okuno, S, Saito, Y, Shibata, M, Takayanagi, M, Tateyama, N, Terasawa, T, Tomida, S, Uchihori, Y, Ueno, S, Yamagami, T & Yuda, T 2005, CALET observation of nuclear components in primary cosmic rays. in 29th International Cosmic Ray Conference, ICRC 2005. vol. 3, Tata Institute of Fundamental Research, pp. 321-324, 29th International Cosmic Ray Conference, ICRC 2005, Pune, 05/8/3.
Ichimura M, Kuramata S, Torii S, Tamura T, Yoshida K, Kasahara K et al. CALET observation of nuclear components in primary cosmic rays. In 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3. Tata Institute of Fundamental Research. 2005. p. 321-324
Ichimura, M. ; Kuramata, S. ; Torii, S. ; Tamura, T. ; Yoshida, Kenji ; Kasahara, K. ; Chang, J. ; Fuke, H. ; Hibino, K. ; Kashiwagi, T. ; Katayose, Y. ; Kitamura, H. ; Kobayashi, T. ; Komori, Y. ; Makino, F. ; Mizutani, K. ; Murakami, H. ; Nishimura, J. ; Okuno, S. ; Saito, Y. ; Shibata, M. ; Takayanagi, M. ; Tateyama, N. ; Terasawa, T. ; Tomida, S. ; Uchihori, Y. ; Ueno, S. ; Yamagami, T. ; Yuda, T. / CALET observation of nuclear components in primary cosmic rays. 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. pp. 321-324
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AU - Ichimura, M.

AU - Kuramata, S.

AU - Torii, S.

AU - Tamura, T.

AU - Yoshida, Kenji

AU - Kasahara, K.

AU - Chang, J.

AU - Fuke, H.

AU - Hibino, K.

AU - Kashiwagi, T.

AU - Katayose, Y.

AU - Kitamura, H.

AU - Kobayashi, T.

AU - Komori, Y.

AU - Makino, F.

AU - Mizutani, K.

AU - Murakami, H.

AU - Nishimura, J.

AU - Okuno, S.

AU - Saito, Y.

AU - Shibata, M.

AU - Takayanagi, M.

AU - Tateyama, N.

AU - Terasawa, T.

AU - Tomida, S.

AU - Uchihori, Y.

AU - Ueno, S.

AU - Yamagami, T.

AU - Yuda, T.

PY - 2005

Y1 - 2005

N2 - Although CALET is originally designed for detections of electrons and gamma rays, nuclear components of primary cosmic rays, from protons to iron nucleus and more, are also observable by CALET, utilizing the total absorption calorimeter (TASC). TASC has 1.6 m.f.p. for protons which is enough to measure the energy of protons up to 1000 TeV. Using the observed spectra, the following items will be discussed: (1) the detailed structure of the spectrum, checking the change of the spectrum index and comparing indices of various components. More than 300 iron nuclei with the energy greater than 1 TeV/n will be observed. (2) secondary/primary ratio. Especially we can observe the both of B/C ratio and sub-Fe/Fe ratio. At the space station, the observation is free from the atmospheric contamination corrections. These observations are essential for the acceleration mechanisms and the propagation of cosmic rays.

AB - Although CALET is originally designed for detections of electrons and gamma rays, nuclear components of primary cosmic rays, from protons to iron nucleus and more, are also observable by CALET, utilizing the total absorption calorimeter (TASC). TASC has 1.6 m.f.p. for protons which is enough to measure the energy of protons up to 1000 TeV. Using the observed spectra, the following items will be discussed: (1) the detailed structure of the spectrum, checking the change of the spectrum index and comparing indices of various components. More than 300 iron nuclei with the energy greater than 1 TeV/n will be observed. (2) secondary/primary ratio. Especially we can observe the both of B/C ratio and sub-Fe/Fe ratio. At the space station, the observation is free from the atmospheric contamination corrections. These observations are essential for the acceleration mechanisms and the propagation of cosmic rays.

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