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1. Direct Measurement of the Cosmic-Ray Helium Spectrum from 40 GeV to 250 TeV with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., de Nolfo, G. A., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., Okuno, S., Ormes, J. F., Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Stolzi, F., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the results of a direct measurement of the cosmic-ray helium spectrum with the CALET instrument in operation on the International Space Station since 2015. The observation period covered by this analysis spans from October 13, 2015 to April 30, 2022 (2392 days). The very wide dynamic range of CALET allowed to collect helium data over a large energy interval, from ~40 GeV to ~250 TeV, for the first time with a single instrument in Low Earth Orbit. The measured spectrum shows evidence of a deviation of the flux from a single power-law by more than 8$\sigma$ with a progressive spectral hardening from a few hundred GeV to a few tens of TeV. This result is consistent with the data reported by space instruments including PAMELA, AMS-02, DAMPE and balloon instruments including CREAM. At higher energy we report the onset of a softening of the helium spectrum around 30 TeV (total kinetic energy). Though affected by large uncertainties in the highest energy bins, the observation of a flux reduction turns out to be consistent with the most recent results of DAMPE. A Double Broken Power Law (DBPL) is found to fit simultaneously both spectral features: the hardening (at lower energy) and the softening (at higher energy). A measurement of the proton to helium flux ratio in the energy range from 60 GeV/n to about 60 TeV/n is also presented, using the CALET proton flux recently updated with higher statistics.

Published
2023
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2. Direct Measurement of the Cosmic-Ray Helium Spectrum from 40 GeV to 250 TeV with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O, Akaike, Y, Asano, K, Asaoka, Y, Berti, E, Bigongiari, G, Binns, W R, Bongi, M, Brogi, P, Bruno, A, Buckley, J H, Cannady, N, Castellini, G, Checchia, C, Cherry, M L, Collazuol, G, de Nolfo, G A, Ebisawa, K, Ficklin, A W, Fuke, H, Gonzi, S, Guzik, T G, Hams, T, Hibino, K, Ichimura, M, Ioka, K, Ishizaki, W, Israel, M H, Kasahara, K, Kataoka, J, Kataoka, R, Katayose, Y, Kato, C, Kawanaka, N, Kawakubo, Y, Kobayashi, K, Kohri, K, Krawczynski, H S, Krizmanic, J F, Maestro, P, Marrocchesi, P S, Messineo, A M, Mitchell, J W, Miyake, S, Moiseev, A A, Mori, M, Mori, N, Motz, H M, Munakata, K, Nakahira, S, Nishimura, J, Okuno, S, Ormes, J F, Ozawa, S, Pacini, L, Papini, P, Rauch, B F, Ricciarini, S B, Sakai, K, Sakamoto, T, Sasaki, M, Shimizu, Y, Shiomi, A, Spillantini, P, Stolzi, F, Sugita, S, Sulaj, A, Takita, M, Tamura, T, Terasawa, T, Torii, S, Tsunesada, Y, Uchihori, Y, Vannuccini, E, Wefel, J P, Yamaoka, K, Yanagita, S, Yoshida, A, Yoshida, K, and Zober, W V

Subjects
Cosmic Rays Composition and Propagation Cosmic Rays and Astroparticle Detectors
Published
2023

3. Cosmic-ray Boron Flux Measured from 8.4 GeV$/n$ to 3.8 TeV$/n$ with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., de Nolfo, G. A., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., Okuno, S., Ormes, J. F., Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Stolzi, F., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), FOS: Physical sciences, Cosmic Rays and Astroparticle Detector Cosmic Rays Propagation and Composition, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the measurement of the energy dependence of the boron flux in cosmic rays and its ratio to the carbon flux \textcolor{black}{in an energy interval from 8.4 GeV$/n$ to 3.8 TeV$/n$} based on the data collected by the CALorimetric Electron Telescope (CALET) during $\sim 6.4$ years of operation on the International Space Station. An update of the energy spectrum of carbon is also presented with an increase in statistics over our previous measurement. The observed boron flux shows a spectral hardening at the same transition energy $E_0 \sim 200$ GeV$/n$ of the C spectrum, though B and C fluxes have different energy dependences. The spectral index of the B spectrum is found to be $\gamma = -3.047\pm0.024$ in the interval $25 < E < 200$ GeV$/n$. The B spectrum hardens by $\Delta \gamma_B=0.25\pm0.12$, while the best fit value for the spectral variation of C is $\Delta \gamma_C=0.19\pm0.03$. The B/C flux ratio is compatible with a hardening of $0.09\pm0.05$, though a single power-law energy dependence cannot be ruled out given the current statistical uncertainties. A break in the B/C ratio energy dependence would support the recent AMS-02 observations that secondary cosmic rays exhibit a stronger hardening than primary ones. We also perform a fit to the B/C ratio with a leaky-box model of the cosmic-ray propagation in the Galaxy in order to probe a possible residual value $\lambda_0$ of the mean escape path length $\lambda$ at high energy. We find that our B/C data are compatible with a non-zero value of $\lambda_0$, which can be interpreted as the column density of matter that cosmic rays cross within the acceleration region., Comment: main text: 7 pages, 3 figures; supplemental material: 13 pages, 8 figures, 3 tables

Published
2022

4. Observation of Spectral Structures in the Flux of Cosmic-Ray Protons from 50 GeV to 60 TeV with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., De Nolfo, G. A., Okuno, S., Ormes, J. F., Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Stolzi, F., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), General Physics and Astronomy, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Cosmic Rays Propagation and Composition Cosmic Rays and Astroparticle Detectors
Abstract

A precise measurement of the cosmic-ray proton spectrum with the Calorimetric Electron Telescope (CALET) is presented in the energy interval from 50 GeV to 60 TeV, and the observation of a softening of the spectrum above 10 TeV is reported. The analysis is based on the data collected during $\sim$6.2 years of smooth operations aboard the International Space Station and covers a broader energy range with respect to the previous proton flux measurement by CALET, with an increase of the available statistics by a factor of $\sim$2.2. Above a few hundred GeV we confirm our previous observation of a progressive spectral hardening with a higher significance (more than 20 sigma). In the multi-TeV region we observe a second spectral feature with a softening around 10 TeV and a spectral index change from =2.6 to -2.9 consistently, within the errors, with the shape of the spectrum reported by DAMPE. We apply a simultaneous fit of the proton differential spectrum which well reproduces the gradual change of the spectral index encompassing the lower energy power-law regime and the two spectral features observed at higher energies., main text: 8 pages, 5 figures, supplemental material: 9 pages, 7 figures, 1 table, marked as a PRL Editor's Suggestion

Published
2022

5. Direct Measurement of the Nickel Spectrum in Cosmic Rays in the Energy Range from 8.8 GeV/n to 240 GeV/n with CALET on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., De Nolfo, G. A., Okuno, S., Ormes, J. F., Ospina, N., Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Stolzi, F., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics::High Energy Astrophysical Phenomena, Cosmic Rays and Astroparticle Detectors Cosmic Rays Propagation and Composition, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The relative abundance of cosmic ray nickel nuclei with respect to iron is by far larger than for all other trans-iron elements, therefore it provides a favorable opportunity for a low background measurement of its spectrum. Since nickel, as well as iron, is one of the most stable nuclei, the nickel energy spectrum and its relative abundance with respect to iron provide important information to estimate the abundances at the cosmic ray source and to model the Galactic propagation of heavy nuclei. However, only a few direct measurements of cosmic-ray nickel at energy larger than $ \sim$ 3 GeV/n are available at present in the literature and they are affected by strong limitations in both energy reach and statistics. In this paper we present a measurement of the differential energy spectrum of nickel in the energy range from 8.8 to 240 GeV/n, carried out with unprecedented precision by the Calorimetric Electron Telescope (CALET) in operation on the International Space Station since 2015. The CALET instrument can identify individual nuclear species via a measurement of their electric charge with a dynamic range extending far beyond iron (up to atomic number $ Z $ = 40). The particle's energy is measured by a homogeneous calorimeter (1.2 proton interaction lengths, 27 radiation lengths) preceded by a thin imaging section (3 radiation lengths) providing tracking and energy sampling. This paper follows our previous measurement of the iron spectrum [O. Adriani et al., Phys. Rev. Lett. 126, 241101 (2021).], and it extends our investigation on the energy dependence of the spectral index of heavy elements. It reports the analysis of nickel data collected from November 2015 to May 2021 and a detailed assessment of the systematic uncertainties. In the region from 20 to 240 GeV$ /n $ our present data are compatible within the errors with a single power law with spectral index $ -2.51 \pm 0.07 $., Comment: main text: 8 pages, 4 figures; supplemental material: 8 pages, 9 figures, 1 table. arXiv admin note: text overlap with arXiv:2106.08036

Published
2022
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6. CALET Observations during the First 5 Years on the ISS

Author

Marrocchesi, P. S., Adriani, O., Akaike, Y., Asaoka, Y., Berti, E., Bigongiari, G., Bongi, M., Brogi, P., Bruno, A., Cannady, N., Checchia, C., Cherry, M. L., Collazuol, G., Ficklin, A. W., Guzik, T. G., Ichimura, M., Israel, M. H., Kasahara, K., Kawakubo, Y., Krizmanic, J. F., Messineo, A. M., Mitchell, J. W., Miyake, S., Mori, M., Mori, N., Motz, H. M., Munakata, K., Pacini, L., Palma, F., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakamoto, T., Sasaki, M., Stolzi, F., Sulaj, A., Tamura, T., Torii, S., Wefel, J. P., Yoshida, K., Zober, W., and V

Subjects
CALORIMETRIC ELECTRON TELESCOPE, CARBON, Nuclear and High Energy Physics, COSMIC-RAY NUCLEI, PAMELA, ENERGY-SPECTRA, PERFORMANCE, Atomic and Molecular Physics, and Optics
Published
2021

7. Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV/n to 2.2 TeV/n with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Bagliesi, M. G., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Ebisawa, K., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Link, J., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., de Nolfo, G. A., Okuno, S., Ormes, J. F., Ospina, N., Ozawa, S., Pacini, L., Palma, F., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Sparvoli, R., Spillantini, P., Stolzi, F., Sugita, S., Suh, J. E., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., and Yoshida, K.

Subjects
Cosmic Rays Carbon Energy Spectrum Oxigen Energy Spectrum CALET International Space Station
Abstract

In this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron Telescope on the International Space Station from October 2015 to October 2019. Analysis, including the detailed assessment of systematic uncertainties, and results are reported. The energy spectra are measured in kinetic energy per nucleon from 10 GeV/n to 2.2 TeV/n with an all-calorimetric instrument with a total thickness corresponding to 1.3 nuclear interaction length. The observed carbon and oxygen fluxes show a spectral index change of ∼0.15 around 200 GeV/n established with a significance3σ. They have the same energy dependence with a constant C/O flux ratio 0.911±0.006 above 25 GeV/n. The spectral hardening is consistent with that measured by AMS-02, but the absolute normalization of the flux is about 27% lower, though in agreement with observations from previous experiments including the PAMELA spectrometer and the calorimetric balloon-borne experiment CREAM.

Published
2020

8. Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Bagliesi, M. G., Berti, E., Bigongiari, G., Binns, W. R., Bonechi, S., Bongi, M., Brogi, P., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Di Felice, V, Ebisawa, K., Fuke, H., Guzik, T. G., Hams, T., Hareyama, M., Hasebe, N., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Lomtadze, T., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, K., Mori, M., Mori, N., Motz, H. M., Munakata, K., Murakami, H., Nakahira, S., Nishimura, J., de Nolfo, G. A., Okuno, S., Ormes, J. F., Ozawa, S., Pacini, L., Palma, F., Papini, P., Penacchioni, A., V, Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Sparvoli, R., Spillantini, P., Stolzi, F., Suh, J. E., Sulaj, A., Takahashi, I, Takayanagi, M., Takita, M., Tamura, T., Tateyama, N., Terasawa, T., Tomida, H., Torii, S., Tsunesada, Y., Uchihori, Y., Ueno, S., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., and Yoshida, K.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Dark matter, General Physics and Astronomy, FOS: Physical sciences, Cosmic ray, Electrons, Calorimetry, International Space stations, 01 natural sciences, Spectral line, law.invention, Telescope, Nuclear physics, Physics and Astronomy (all), Positron, Cosmic ray measurement, Positrons, law, 0103 physical sciences, Alpha Magnetic Spectrometer, 14. Life underwater, 010306 general physics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Spectral index, 010308 nuclear & particles physics, Settore FIS/04, Spectrum analysis, Dark matter particles, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract

著者人数: 91名(所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 海老沢, 研; 福家, 英之; 森, 国城; 西村, 純; 高柳, 昌弘; 冨田, 洋; 上野, 史郎), Number of authors: 91(Affilication. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS): Ebisawa, Ken; Fuke, Hideyuki; Mori, Kunishiro; Nishimura, Jun; Takayanagi, Masahiro; Tomida, Hiroshi; Ueno, Shiro), 資料番号: SA1180105000

Published
2018
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9. Energy Spectrum of Cosmic-Ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station

Author

CALET, Collaboration, Adriani, O., Asano, K., Bagliesi, M. G., Bigongiari, G., Binns, W. R., Bonechi, S., Bongi, M., Brogi, P., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Di, Felice V., Guzik, T. G., Hams, T., Ioka, K., Ishizaki, W., Israel, M. H., Javaid, A., Kataoka, R., Kato, C., Kawanaka, N., Kawakubo, Y., Krawczynski, H. S., Krizmanic, J. F., Lomtadze, T., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., de, Nolfo G. A., Ormes, J. F., Ozawa, Shunsuke, Pacini, L., Palma, F., Papini, P., Penacchioni, A. V., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Yuki, Shiomi, A., Sparvoli, R., Spillantini, P., Stolzi, F., Takahashi, I., Takita, M., Tsunesada, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Akaike, Yosui, Asaoka, Yoichi, Ebisawa, Ken, Fuke, Hideyuki, Hareyama, Makoto, Hasebe, Nobuyuki, Hibino, Kinya, Ichimura, Masakatsu, Kasahara, Katsuaki, Kataoka, Jun, Katayose, Yusaku, Kuramata, Shiyuuichi, Mizutani, Kouhei, Mori, Kunishiro, Murakami, Hiroyuki, Nakahira, Satoshi, Nishimura, Jun, Okuno, Shoji, Takayanagi, Masahiro, Tamura, Tadahisa, Tateyama, Nobuhito, Terasawa, Toshio, Tomida, Hiroshi, Torii, Shoji, Uchihori, Yukio, Ueno, Shiro, Yoshida, Kenji, and Yuda, Toshinori

Subjects
Particle physics, Proton, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, FOS: Physical sciences, Cosmic ray, Electrons, Electron, Calorimetry, 7. Clean energy, 01 natural sciences, law.invention, Telescope, Physics and Astronomy (all), Calorimetry, Cosmic rays, Cosmology, Electrons, Positrons, Space stations, Spectroscopy, Spectrum analysis, Tellurium compounds, Tellurium compounds, Positron, Positrons, law, 0103 physical sciences, 010306 general physics, Cosmic rays, Spectroscopy, Physics, Settore FIS/01, High Energy Astrophysical Phenomena (astro-ph.HE), Spectral index, 010308 nuclear & particles physics, Spectral density, Space stations, Spectrum analysis, Cosmology, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, Energy (signal processing)
Abstract

First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 2015. Nearly a half million electron + positron events are included in the analysis. CALET is an all-calorimetric instrument with total vertical thickness of 30 $X_0$ and a fine imaging capability designed to achieve a large proton rejection and excellent energy resolution well into the TeV energy region. The observed energy spectrum over 30 GeV can be fit with a single power law with a spectral index of -3.152 $\pm$ 0.016 (stat.+ syst.). Possible structure observed above 100 GeV requires further investigation with increased statistics and refined data analysis., 7 pages, 6 figures, published 1 November 2017 in Physical Review Letters

Published
2017
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10. CALET UPPER LIMITS ON X-RAY AND GAMMA-RAY COUNTERPARTS OF GW151226

Author

Adriani, O., Asano, K., Bagliesi, M. G., Bigongiari, G., Binns, W. R., Bonechi, S., Bongi, M., Brogi, P., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Di, Felice V., Guzik, T. G., Hams, T., Ioka, K., Ishizaki, W., Israel, M. H., Javaid, A., Kataoka, R., Kato, C., Kawanaka, N., Kawakubo, Y., Krawczynski, H. S., Krizmanic, J. F., Lomtadze, T., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Ormes, J. F., Ozawa, Shunsuke, Pacini, L., Palma, F., Papini, P., Penacchioni, A. V., Rauch, B. F., Ricciarini, S., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Yuki, Shiomi, A., Sparvoli, R., Spillantini, P., Stolzi, F., Takahashi, I., Takita, M., Tsunesada, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Akaike, Yosui, Asaoka, Yoichi, Ebisawa, Ken, Fuke, Hideyuki, Hareyama, Makoto, Hasebe, Nobuyuki, Hibino, Kinya, Ichimura, Masakatsu, Kasahara, Katsuaki, Kataoka, Jun, Katayose, Yusaku, Kitamura, Hisashi, Kuramata, Shiyuuichi, Mizutani, Kouhei, Mori, Kunishiro, Murakami, Hiroyuki, Nakagawa, Yujin E., Nakahira, Satoshi, Nishimura, Jun, Okuno, Shoji, Takayanagi, Masahiro, Tamura, Tadahisa, Tateyama, Nobuhito, Terasawa, Toshio, Tomida, Hiroshi, Torii, Shoji, Uchihori, Yukio, Ueno, Shiro, Yoshida, Kenji, and Yuda, Toshinori

Subjects
Astrophysics::High Energy Astrophysical Phenomena, gamma-ray burst: general, FOS: Physical sciences, gamma-ray burst, Phosphor, Astrophysics, 01 natural sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare, 0103 physical sciences, GW151226, Astronomical interferometer, BURSTS, 010306 general physics, 010303 astronomy & astrophysics, general - gravitational waves, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Luminosity (scattering theory), Gravitational wave, Settore FIS/01 - Fisica Sperimentale, X-ray, Gamma ray, gravitational waves, Astronomy and Astrophysics, Space and Planetary Science, Gamma-ray burst, Astrophysics - High Energy Astrophysical Phenomena
Abstract

著者人数: 92名, Accepted: 2016-09-02, 資料番号: SA1160178000

Published
2016

11. High Energy Astro-particle Physics with the CALET Experiment

Author

Adriani, O., Asano, K., Bagliesi, M. G., Bigongiari, G., Binns, W. R., Bongi, M., Buckley, J. H., Castellini, G., Cherry, M. L., Gianmaria Collazuol, Ebisawa, K., Di Felice, V., Fuke, H., Gherardi, A., Guzik, T. G., Hams, T., Hasebe, N., Hareyama, M., Hibino, K., Ichimura, M., Ioka, K., Isbert, J. B., Israel, M. H., Kamioka, E., Kasahara, K., Katayose, Y., Kataoka, J., Kataoka, R., Kawanaka, N., Kim, M. Y., Kitamura, H., Komori, Y., Kotani, T., Krawczynski, H. S., Krizmanic, J. F., Kubota, A., Kuramata, S., Lomtadze, T., Maestro, P., Marcelli, L., Marrocchesi, P. S., Millucci, V., Mitchell, J. W., Mizutani, K., Moiseev, A. A., Mori, K., Mori, M., Mori, N., Munakata, K., Murakami, H., Nakagawa, Y. E., Nishimura, J., Okuno, S., Ormes, J. F., Ozawa, S., Papini, P., Rauch, B. F., Ricciarini, S., Saito, Y., Sasaki, M., Shibata, M., Shimizu, Y., Shiomi, A., Sparvoli, R., Spillantini, P., Takayanagi, M., Takita, M., Tamura, T., Tateyama, N., Terasawa, T., Tomida, H., Torii, S., Tunesada, Y., Uchihori, Y., Ueno, S., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yoshida, A., Yoshida, K., and Yuda, T.

Published
2012

12. The results of ATIC-2 experiment for elemental spectra of cosmic rays

Author

Panov, A. D., Adams, J. H., Ahn, H. S., Bashindzhagyan, G. L., Batkov, K. E., Chang, J., Christl, M., Fazely, A. R., Ganel, O., Gunashingha, R. M., Guzik, T. G., Isbert, J., Kim, K. C., Kouznetsov, E. N., Panasyuk, M. I., Schmidt, W. K. H., Seo, E. S., Sokolskaya, N. V., Watts, John W., Wefel, J. P., Wu, J., and Zatsepin, V. I.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Astrophysics (astro-ph), Physics::Accelerator Physics, FOS: Physical sciences, Astrophysics, Nuclear Experiment
Abstract

The results of ATIC-2 baloon experiment (2002-2003) for energy spectra of protons, He, C, O, Ne, Mg, Si, Fe, some groups of nuclei, and all-particle spectrum in primary cosmic rays are presented in energy region 50GeV--200TeV. The conclusion is that the spectra of protons and helium nuclei are essentially different (the spectrum of protons is steeper) and the spectra of protons and heavy nuclei have no-power form., Comment: 7 pages, 3 figures, report on 29-th Russian Cosmic Rays Conference, to be published in Bull.Russ.Acad.Sci., Phys

Published
2006
Full Text
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13. Relativistic Interaction of 22Ne and 26Mg in Hydrogen and the Cosmic Ray Implications

Author

Chen, C. X., Albergo, Sebastiano Francesco, Caccia, Z., Costa, Salvatore, Crawford, H. J., Cronqvist, M., Engelage, J., Greiner, L., Guzik, T. G., Insolia, Antonio, Knott, C. N., Lindstrom, P. J., Mcmahon, M., Mitchell, J. W., Potenza, Renato Carlo, Russo, G. V., Soutoul, A., Testard, O., Tull, C. E., Tuve', Cristina Natalina, Waddington, C. J., Webber, W. R., Wefel, J. P., and The Transport Collaboration

Subjects
Physics, Nuclear reaction, CNO cycle, Hiss, Spectrometer, Hydrogen, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Astronomy and Astrophysics, Cosmic ray, Nuclear physics, Cross section (physics), chemistry, Space and Planetary Science, Nucleosynthesis, Nuclear Experiment
Abstract

The isotopic production cross sections for 22Ne projectiles at 377,581, and 894 MeV nucleon-1 and 26Mg projectiles at 371 and 576 MeV nucleon-1 interacting in a liquid hydrogen target have been measured by the Transport Collaboration at the Lawrence Berkeley Laboratory Heavy-Ion Spectrometer System (LBL HISS) facility. These cross sections are compared with those predicted by semi-empirical formulae. The systematics are studied to develop suitable inputs for calculations of galactic cosmic-ray interstellar transport. These calculations are used to unfold the transport effects from available observations of cosmic-ray CNO isotopes to extract the underlying source composition. With these new cross section measurements, the previously reported enhancement of 18O at the cosmic-ray source, which is sensitive to the cross sections for production from 22Ne and 26Mg and the uncertainties in cross section prediction formulae, may be explained. There is no evidence for an enhancement of 18O when these new cross sections are used in a weighted slab propagation calculation.

Published
1997

14. Neutron production at 0-degrees from the Ca-40 + H reaction at Elab= A-357 and A-565 MeV

Author

Tuvè, C., Albergo, S., Boemi, Domenica, Caccia, Z., Chen, C. X., Costa, S., Crawford, H. J., Cronqvist, M., Engelage, J., Greiner, L., Guzik, T. G., Insolia, A., Knott, C. N., Lindstrom, P. J., Mitchell, J. W., Potenza, R., Reito, Santo, Romanski, J., Russo, G. V., Soutoul, A., Testard, O., Tull, C. E., Waddington, C. J., Webber, W. R., and Wefel (The Transport Collaboration), and J. P.

Published
1997

15. CALET on the International Space Station: a precise measurement of the iron spectrum

Author

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., Nolfo, G. A., Okuno, S., Ormes, J. F., Nataly Ospina, Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Stolzi, F., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

16. Neutron production from the Ca-40 + H reaction at E(lab) = 357-A-MeV and 565-A-MeV

Author

Insolia, A., Tuve, C., Albergo, S., Boemi, D., Caccia, Z., Salvatore Costa, Potenza, R., Russo, G. V., Tricomi, A., Chen, C. X., Guzik, T. G., Tull, C. E., Wefel, J. P., Zhang, X., Crawford, H. J., Engelage, J., Greiner, L., Cronqvist, M., Lindstrom, P. J., Ferrando, P., Soutoul, A., Testard, O., Jones, F. C., Mitchell, J. W., Knott, C. N., Waddington, C. J., and Webber, W. R.

17. Overview of the CALET Mission to the ISS

Author

Adriani, O., Asano, K., Bagliesi, M. G., Bigongiari, G., Binns, W. R., Bongi, M., Buckley, J. H., Castellini, G., Cherry, M. L., Gianmaria Collazuol, Ebisawa, K., Di Felice, V., Fuke, H., Gherardi, A., Guzik, T. G., Hams, T., Hasebe, N., Hareyama, M., Hibino, K., Ichimura, M., Ioka, K., Isbert, J. B., Israel, M. H., Kamioka, E., Kasahara, K., Katayose, Y., Kataoka, J., Kataoka, R., Kawanaka, N., Kim, M. Y., Kitamura, H., Komori, Y., Kotani, T., Krawczynski, H. S., Krizmanic, J. F., Kubota, A., Kuramata, S., Lomtadze, T., Maestro, P., Marcelli, L., Marrocchesi, P. S., Millucci, V., Mitchell, J. W., Mizutani, K., Moiseev, A. A., Mori, K., Mori, M., Mori, N., Munakata, K., Murakami, H., Nakagawa, Y. E., Nishimura, J., Okuno, S., Ormes, J. F., Ozawa, S., Papini, P., Rauch, B. F., Ricciarini, S., Saito, Y., Sasaki, M., Shibata, M., Shimizu, Y., Shiomi, A., Sparvoli, R., Spillantini, P., Takayanagi, M., Takita, M., Tamura, T., Tateyama, N., Terasawa, T., Tomida, H., Torii, S., Tunesada, Y., Uchihori, Y., Ueno, S., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yoshida, A., Yoshida, K., and Yuda, T.

Subjects
Calorimeter, ISS, Dark matter, High Energy Electrons

18. The CALET mission on international space station

Author

Torii, S., Shimizu, Y., Kasahara, K., Hasebe, N., Hareyama, M., Kodaira, S., Okudaira, O., Yamashita, N., Miyazima, M., Miyaji, T., Tkayanagi, M., Ueno, S., Tomida, H., Saito, Y., Fuke, H., Yamagami, T., Nishimura, J., Tamura, T., Tateyama, N., Hibino, K., Okuno, S., Shiomi, A., Takita, M., Yuda, T., Kakimoto, F., Tsunesada, Y., Terasawa, T., Kobayashi, T., Yoshida, A., Yamaoka, K., Katayose, Y., Shibata, M., Ichimura, M., Kuramata, S., Uchihori, Y., Kitamura, A., Yoshida, K., Murakami, H., Komori, Y., Mizutani, K., Munakata, K., Streitmatter, R. E., Mitchell, J. W., Barbier, L. M., Moiseev, A. A., Krizmanic, J. F., Ormes, J. F., Wefel, J. P., Case, G., Cherry, M. L., Guzik, T. G., Isbert, J. B., Binns, W. R., Israel, M. H., Krawczynski, H. S., Marrocchesi, P. S., Gabriele Bigongiari, Batkov, K., Kim, M. Y., Bagliesi, M. G., Masestro, P., Millucci, V., Zei, R., Adriani, O., Papini, P., Vannuccini, E., Bonechi, L., Chang, J., Yan, J., and Gan, W.

19. CALET on the International Space Station: a precise measurement of the iron spectrum

Author

Checchia, C., Stolzi, F., Akaike, Y., Adriani, O., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Cherry, M. L., Collazuol, G., Ebisawa, K., Ficklin, A. W., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., Nolfo, G. A., Okuno, S., Ormes, J. F., Nataly Ospina, Ozawa, S., Pacini, L., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Spillantini, P., Sugita, S., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K., and Zober, W. V.

20. The CALET mission on international space station

Author

Torii, S., Tamura, T., Tateyama, N., Hibino, K., Yuda, T., Yoshida, K., Kashiwagi, K., Okuno, S., Nishimura, J., Yamagami, T., Saito, Y., Fuke, H., Takayanagi, M., Tomida, H., Ueno, S., Makino, F., Shibata, M., Katayose, Y., Kuramata, S., Ichimura, M., Uchihori, Y., Kitamura, H., Kasahara, K., Murakami, H., Kobayashi, T., Komori, Y., Mizutani, K., Terasawam, T., Streitmatter, R. E., Mitchell, J. W., Barbier, L. M., Moiseev, A. A., Krizmanic, J. F., Ormes, J. F., Binns, W. R., Israel, M. H., Krawzczynski, H. S., Case, G., Cherry, M. L., Guzik, T. G., Isbert, J. B., Wefel, J. P., Marrocchesi, P. S., Maestro, P., Bagliesi, M. G., Millucci, V., Meucci, M., Bigongiari, G., Zei, R., Franco Ligabue, Morsani, F., Adriani, O., Papini, P., Spillantini, P., Bonechi, L., Vannuccini, E., Chang, J., Gan, W., and Lu, T.

Subjects
SUPERNOVA-REMNANTS, COSMIC-RAY ELECTRONS

21. Arch for antihelium in cosmic rays

Author

Alcaraz, J., Alvisi, D., behcet alpat, Ambrosi, G., Anderhub, H., Ao, L., Arefiev, A., Azzarello, P., Babucci, E., Baldini, L., Basile, M., Barancourt, D., Barao, F., Barbier, G., Barreira, G., Battiston, R., Becker, R., Becker, U., Bellagamba, L., Béné, P., Berdugo, J., Berges, P., Bertucci, B., Biland, A., Bizzaglia, S., Blasko, S., Boella, G., Bourquin, M., Bruni, G., Buenerd, M., Burger, J. D., Burger, W. J., Cai, X. D., Cavalletti, R., Camps, C., Cannarsa, P., Capell, M., Casadei, D., Casaus, J., Castellini, G., Chang, Y. H., Chen, H. S., Chen, Z. G., Chernoplekov, N. A., Chiarini, A., Chiueh, T. H., Chuang, Y. L., Cindolo, F., Commichau, V., Contin, A., Cotta-Ramusino, A., Crespo, P., Cristinziani, M., Dacunha, J. P., Dai, T. S., Deus, J. D., Ding, L. K., Dinu, N., Djambazov, L., D Antone, I., Dong, Z. R., Emonet, P., Eppling, F. J., Eronen, T., Esposito, G., Extermann, P., Favier, J., Feng, C. C., Fiandrini, E., Finelli, F., Fisher, P. H., Flaminio, R., Fluegge, G., Fouque, N., Galaktionov, Y., Gervasi, M., Giusti, P., Gu, W. Q., Guzik, T. G., Hangarter, K., Hasan, A., Hermel, V., Hofer, H., Huang, M. A., Hungerford, W., Ionica, M., Ionica, R., Isbert, J., Jongmanns, M., Karpinski, W., Kenney, G., Kenny, J., Kim, W., Klimentov, A., Krieger, J., Kossakowski, R., Koutsenko, V., Laborie, G., Laitinen, T., Lamanna, G., Laurenti, G., Lebedev, A., Lee, S. C., Levi, G., Levtchenko, P., Li, T. P., Liu, C. L., Liu, H. T., Lolli, M., Lopes, I., Lu, G., Lu, Y. S., Lübelsmeyer, K., Luckey, D., Lustermann, W., Maehlum, G., Maña, C., Margotti, A., Massera, F., Mayet, F., Mcneil, R. R., Meillon, B., Menichelli, M., Mezzanotte, F., Mezzenga, R., Mihul, A., Molinari, G., Mourao, A., Mujunen, A., Palmonari, F., Pancaldi, G., Papi, A., Park, I. H., Pauluzzi, M., Pauss, F., Perrin, E., Pesci, A., Pevsner, A., Pilastrini, R., Pimenta, M., Plyaskin, V., Pojidaev, V., Postema, H., Prati, E., Produit, N., Rancoita, P. G., Rapin, D., Raupach, F., Recupero, S., Ren, D., Ren, Z., Ribordy, M., Richeux, J. P., Riihonen, E., Ritakari, J., Roeser, U., Roissin, C., Sagdeev, R., Santos, D., Sartorelli, G., Schultzvondratzig, A., Schwering, G., Shoutko, V., Shoumilov, E., Siedling, R., Son, D., Song, T., Steuer, M., Sun, G. S., Suter, H., Tang, X. W., Ting, S. C. C., Ting, S. M., Tenbusch, F., Torromeo, G., Torsti, J., Trümper, J., Ulbricht, J., Urpo, S., Usoskin, I., Valtonen, E., Vandenhirtz, J., Velikhov, E., Verlaat, B., Vetlitsky, I., Vezzu, F., Vialle, J. P., Viertel, G., Vité, D., Vongunten, H., Waldmeier Wicki, S., Wallraff, W., Wang, B. C., Wang, J. Z., Wang, Y. H., Wefel, J. P., Werner, E. A., Williams, C., Wu, S. X., Xia, P. C., Yan, J. L., Yan, L. G., Yang, C. G., Yang, M., Yeh, P., Zhang, H. Y., Zhao, D. X., Zhu, G. Y., Zhu, W. Z., Zhuang, H. L., and Zichichi, A.

22. Relative abundances of cosmic ray nuclei B-C-N-O in the energy region from 10 GeV/n to 300 GeV/n. Results from ATIC-2 (the science flight of ATIC)

Author

Panov, A. D., Sokolskaya, N. V., Adams Jr, J. H., Ahn, H. S., Bashindzhagyan, G. L., Batkov, K. E., Chang, J., Christl, M., Fazely, A. R., Ganel, O., Gunasingha, R. M., Guzik, T. G., Isbert, J., Kim, K. C., Kouznetsov, E. N., Panasyuk, M. I., Schmidt, W. K. H., Eun-Suk Seo, Watts, J., Wefel, J. P., Wu, J., and Zatsepin, V. I.

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, High Energy Physics::Experiment, Astrophysics, Nuclear Experiment
Abstract

The ATIC balloon-borne experiment measures the energy spectra of elements from H to Fe in primary cosmic rays from about 100 GeV to 100 TeV. ATIC is comprised of a fully active bismuth germanate calorimeter, a carbon target with embedded scintillator hodoscopes, and a silicon matrix that is used as the main charge detector. The silicon matrix produces good charge resolution for protons and helium but only partial resolution for heavier nuclei. In the present paper, the charge resolution of ATIC was improved and backgrounds were reduced in the region from Be to Si by using the upper layer of the scintillator hodoscope as an additional charge detector. The flux ratios of nuclei B/C, C/O, N/O in the energy region from about 10 GeV/nucleon to 300 GeV/nucleon obtained from this high-resolution, high-quality charge spectra are presented, and compared with existing theoretical predictions., Comment: 4 pages,2 figures, a paper for 30-th International Cosmic Rays Conference

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