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51. Search for Cosmic-Ray Antideuterons

Author

Fuke, H., Maeno, T., Abe, K., Haino, S., Makida, Y., Matsuda, S., Matsumoto, H., Mitchell, J. W., Moiseev, A. A., Nishimura, J., Nozaki, M., Orito, S., Ormes, J. F., Sasaki, M., Seo, E. S., Shikaze, Y., Streitmatter, R. E., Suzuki, J., Tanaka, K., Tanizaki, K., Yamagami, T., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

We performed a search for cosmic-ray antideuterons using data collected during four BESS balloon flights from 1997 to 2000. No candidate was found. We derived, for the first time, an upper limit of 1.9E-4 (m^2 s sr GeV/nucleon)^(-1) for the differential flux of cosmic-ray antideuterons, at the 95% confidence level, between 0.17 and 1.15 GeV/nucleon at the top of the atmosphere., Comment: 4 pages, 3 figures, submitted to Phys. Rev. Lett

Published
2005
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52. Measurements of Primary and Atmospheric Cosmic-Ray Spectra with the BESS-TeV Spectrometer

Author

Haino, S., Sanuki, T., Abe, K., Anraku, K., Asaoka, Y., Fuke, H., Imori, M., Itasaki, A., Maeno, T., Makida, Y., Matsuda, S., Matsui, N., Matsumoto, H., Mitchell, J. W., Moiseev, A. A., Nishimura, J., Nozaki, M., Orito, S., Ormes, J. F., Sasaki, M., Seo, E. S., Shikaze, Y., Streitmatter, R. E., Suzuki, J., Takasugi, Y., Tanaka, K., Tanizaki, K., Yamagami, T., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

Primary and atmospheric cosmic-ray spectra were precisely measured with the BESS-TeV spectrometer. The spectrometer was upgraded from BESS-98 to achieve seven times higher resolution in momentum measurement. We report absolute fluxes of primary protons and helium nuclei in the energy ranges, 1-540 GeV and 1-250 GeV/n, respectively, and absolute flux of atmospheric muons in the momentum range 0.6-400 GeV/c., Comment: 26 pages, 9 figures, 3 tables, Submitted to Phys. Lett. B

Published
2004
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53. Measurement of Cosmic-Ray Proton and Antiproton Spectra at Mountain Altitude

Author

Sanuki, T., Fujikawa, M., Matsunaga, H., Abe, K., Anraku, K., Fuke, H., Haino, S., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Nishimura, J., Nozaki, M., Orito, S., Sasaki, M., Shikaze, Y., Suzuki, J., Tanaka, K., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

Cosmic-ray proton and antiproton spectra were measured at mountain altitude, 2770 m above sea level. We observed more than 2 x 10^5 protons and 10^2 antiprotons in a kinetic energy range between 0.25 and 3.3 GeV. The zenith-angle dependence of proton flux was obtained. The observed spectra were compared with theoretical predictions., Comment: 10 pages, 5 figures, Submitted to Phys. Lett. B

Published
2003
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54. Measurement of Cosmic-Ray Proton, Antiproton and Muon Spectra at Mountain Altitude

Author

Sanuki, T., Fujikawa, M., Abe, K., Anraku, K., Fuke, H., Haino, S., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Matsunaga, H., Nishimura, J., Nozaki, M., Orito, S., Sasaki, M., Shikaze, Y., Suzuki, J., Tanaka, K., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

Measurement of cosmic-ray proton, antiproton and muon spectra was carried out at mountain altitude. We observed 2 x 10^5 protons and 10^2 antiprotons in a kinetic energy region of 0.25 -- 3.3 GeV. Zenith-angle dependence of proton fluxes was obtained. Atmospheric muon spectra were measured simultaneously. The observed antiproton spectrum showed some deviation from theoretical predictions particularly in a low energy region., Comment: To be published in the proceedings of ICRC2003

Published
2003

55. Measurements of Proton, Helium and Muon Spectra at Small Atmospheric Depths with the BESS Spectrometer

Author

Abe, K., Sanuki, T., Anraku, K., Asaoka, Y., Fuke, H., Haino, S., Ikeda, N., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsuda, S., Matsui, N., Matsukawa, T., Matsumoto, H., Mitchell, J. W., Moiseev, A. A., Nishimura, J., Nozaki, M., Orito, S., Ormes, J. F., Sasaki, M., Seo, E. S., Shikaze, Y., Sonoda, T., Streitmatter, R. E., Suzuki, J., Tanaka, K., Tanizaki, K., Yamagami, T., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

The cosmic-ray proton, helium, and muon spectra at small atmospheric depths of 4.5 -- 28 g/cm^2 were precisely measured during the slow descending period of the BESS-2001 balloon flight. The variation of atmospheric secondary particle fluxes as a function of atmospheric depth provides fundamental information to study hadronic interactions of the primary cosmic rays with the atmosphere., Comment: 21 pages, 11 figures, 4 tables

Published
2003
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56. Measurements of atmospheric muon spectra at mountain altitude

Author

Sanuki, T., Fujikawa, M., Abe, K., Anraku, K., Asaoka, Y., Fuke, H., Haino, S., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Matsunaga, H., Motoki, M., Nishimura, J., Nozaki, M., Orito, S., Sasaki, M., Shikaze, Y., Sonoda, T., Suzuki, J., Tanaka, K., Toki, Y., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

We report new measurements of the atmospheric muons at mountain altitude. The measurement was carried out with the BESS detector at the top of Mt. Norikura, Japan. The altitude is 2,770 m above sea level. Comparing our results and predictions given by some interaction models, a further appropriate model has been investigated. These studies would improve accuracy of atmospheric neutrino calculations., Comment: Mean momentum in Table 1 was corrected

Published
2002
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57. Precise Measurements of Atmospheric Muon Fluxes with the BESS Spectrometer

Author

Motoki, M., Sanuki, T., Orito, S., Abe, K., Anraku, K., Asaoka, Y., Fujikawa, M., Fuke, H., Haino, S., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Matsunaga, H., Mitchell, J., Mitsui, T., Moiseev, A., Nishimura, J., Nozaki, M., Ormes, J., Saeki, T., Sasaki, M., Seo, E. S., Shikaze, Y., Sonoda, T., Streitmatter, R., Suzuki, J., Tanaka, K., Ueda, I., Wang, J. Z., Yajima, N., Yamagami, T., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

The vertical absolute fluxes of atmospheric muons and muon charge ratio have been measured precisely at different geomagnetic locations by using the BESS spectrometer. The observations had been performed at sea level (30 m above sea level) in Tsukuba, Japan, and at 360 m above sea level in Lynn Lake, Canada. The vertical cutoff rigidities in Tsukuba (36.2 N, 140.1 E) and in Lynn Lake (56.5 N, 101.0 W) are 11.4 GV and 0.4 GV, respectively. We have obtained vertical fluxes of positive and negative muons in a momentum range from 0.6 to 20 GeV/c with systematic errors less than 3 % in both measurements. By comparing the data collected at two different geomagnetic latitudes, we have seen an effect of cutoff rigidity. The dependence on the atmospheric pressure and temperature, and the solar modulation effect have been also clearly observed. We also clearly observed the decrease of charge ratio of muons at low momentum side with at higher cutoff rigidity region., Comment: 35 pages, 9 figures. Submitted to Astroparticle Physics

Published
2002
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58. Measurements of Cosmic-ray Low-energy Antiproton and Proton Spectra in a Transient Period of the Solar Field Reversal

Author

Asaoka, Y., Shikaze, Y., Abe, K., Anraku, K., Fujikawa, M., Fuke, H., Haino, S., Imori, M., Izumi, K., Maeno, T., Makida, Y., Matsuda, S., Matsui, N., Matsukawa, T., Matsumoto, H., Matsunaga, H., Mitchell, J., Mitsui, T., Moiseev, A., Motoki, M., Nishimura, J., Nozaki, M., Orito, S., Ormes, J. F., Saeki, T., Sanuki, T., Sasaki, M., Seo, E. S., Sonoda, T., Streitmatter, R., Suzuki, J., Tanaka, K., Tanizaki, K., Ueda, I., Wang, J. Z., Yajima, Y., Yamagami, Y., Yamamoto, A., Yamamoto, Y., Yamato, K., Yoshida, T., and Yoshimura, K.

Subjects
Astrophysics
Abstract

The energy spectra of cosmic-ray low-energy antiprotons and protons have been measured by BESS in 1999 and 2000, during a period covering the solar magnetic field reversal. Based on these measurements, a sudden increase of the antiproton to proton flux ratio following the solar magnetic field reversal was observed, and it generally agrees with a drift model of the solar modulation., Comment: 4 pages, 4 figures, revised version accepted for publication in Phys. Rev. Lett

Published
2001
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59. Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV

Author

Asaoka, Y., Yoshimura, K., Yoshida, T., Abe, K., Anraku, K., Fujikawa, M., Fuke, H., Haino, S., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Matsunaga, H., Motoki, M., Nozaki, M., Orito, S., Sanuki, T., Sasaki, M., Shikaze, Y., Sonoda, T., Suzuki, J., Tanaka, K., Toki, Y., and Yamamoto, A.

Subjects
Physics - Instrumentation and Detectors
Abstract

An accelerator experiment was performed using a low-energy antiproton beam to measure antiproton detection efficiency of BESS, a balloon-borne spectrometer with a superconducting solenoid. Measured efficiencies showed good agreement with calculated ones derived from the BESS Monte Carlo simulation based on GEANT/GHEISHA. With detailed verification of the BESS simulation, the relative systematic error of detection efficiency derived from the BESS simulation has been determined to be $\pm$5%, compared with the previous estimation of $\pm$15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux., Comment: 13 pages, 7 figures

Published
2001
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60. The results from BESS-Polar experiment

Author

Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Kim, K.C., Lee, M.H., Makida, Y., Mitchell, J.W., Nishimura, J., Nozaki, M., Orito, R., Ormes, J.F., Picot-Clemente, N., Sakai, K., Sasaki, M., Seo, E.S., Streitmatter, R.E., Suzuki, J., Tanaka, K., Thakur, N., Yamamoto, A., Yoshida, T., and Yoshimura, K.

Published
2017
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63. 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

64. Statistical investigation of the large-area Si(Li) detectors mass-produced for the GAPS experiment

Author

Kozai, M., primary, Tokunaga, K., additional, Fuke, H., additional, Yamada, M., additional, Hailey, C.J., additional, Kato, C., additional, Kraych, D., additional, Law, M., additional, Martinez, E., additional, Munakata, K., additional, Perez, K., additional, Rogers, F., additional, Saffold, N., additional, Shimizu, Y., additional, Tokuda, K., additional, and Xiao, M., additional

Published
2022
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65. CALET Search for Electromagnetic Counterparts of Gravitational Waves during the LIGO/Virgo O3 Run

Author

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

Published
2022
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66. Time variations of cosmic-ray helium isotopes with BESS-Polar I

Author

Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Itazaki, A., Kim, K.C., Kumazawa, T., Kusumoto, A., Lee, M.H., Makida, Y., Matsuda, S., Matsukawa, Y., Matsumoto, K., Mitchell, J.W., Moiseev, A.A., Nishimura, J., Nozaki, M., Orito, R., Ormes, J.F., Picot-Clémente, N., Sakai, K., Sasaki, M., Seo, E.S., Shikaze, Y., Shinoda, R., Streitmatter, R.E., Suzuki, J., Takasugi, Y., Takeuchi, K., Tanaka, K., Thakur, N., Yamagami, T., Yamamoto, A., Yoshida, T., and Yoshimura, K.

Published
2014
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68. The flight of the GAPS prototype experiment

Author

von Doetinchem, P., Aramaki, T., Bando, N., Boggs, S.E., Fuke, H., Gahbauer, F.H., Hailey, C.J., Koglin, J.E., Mognet, S.A.I., Madden, N., Okazaki, S., Ong, R.A., Perez, K.M., Yoshida, T., and Zweerink, J.

Published
2014
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69. The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years of Operation

Author

Asaoka Y, Adriani O, Akaike Y, Asano K, Bagliesi MG, Berti E, Bigongiari G, Binns WR, Bonechi S, Bongi M, Bruno A, 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, Hasebe N, Hibinov 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, Pal'shin V, 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, Sugita S, 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
Physics, QC1-999
Abstract

The CALorimetric Electron Telescope (CALET) space experiment, which has been developed by Japan in collaboration with Italy and the United States, is a high-energy astroparticle physics mission on the International Space Station (ISS). The primary goals of the CALET mission include investigation of possible nearby sources of high-energy electrons, detailed study of galactic cosmic-ray acceleration and propagation, and search for dark matter signatures. With a long-term observation onboard the ISS, the CALET experiment measures the flux of cosmic-ray electrons (including positrons) up to 20 TeV, gamma-rays to 10 TeV, and nuclei up to 1,000 TeV based on its charge separation capability from Z = 1 to 40. Since the start of science operation in mid-October, 2015, a continuous observation has been maintained without any major interruptions. The number of triggered events over 10 GeV is nearly 20 million per month. By using the data obtained during the first two-years, here we present a summary of the CALET observations: 1) Electron+positron energy spectrum, 2) Nuclei analysis, 3) Gamma-ray observation with a characterization of the on-orbit performance. The search results for the electromagnetic counterparts of LIGO/Virgo gravitational wave events are also discussed.

Published
2019
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71. Search for cosmic-ray antiproton origins and for cosmological antimatter with BESS

Author

Yamamoto, A., Mitchell, J.W., Yoshimura, K., Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Itazaki, A., Kim, K.C., Kumazawa, T., Kusumoto, A., Lee, M.H., Makida, Y., Matsuda, S., Matsukawa, Y., Matsumoto, K., Moiseev, A.A., Myers, Z., Nishimura, J., Nozaki, M., Orito, R., Ormes, J.F., Sakai, K., Sasaki, M., Seo, E.S., Shikaze, Y., Shinoda, R., Streitmatter, R.E., Suzuki, J., Takasugi, Y., Takeuchi, K., Tanaka, K., Taniguchi, T., Thakur, N., Yamagami, T., and Yoshida, T.

Published
2013
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73. In Search of Cosmic-Ray Antinuclei from Dark Matter with the GAPS Experiment

Author

Xiao, M., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Dark matter, readout electronics, Astroparticle physics, detectors, Settore ING-INF/01 - Elettronica
Published
2022

74. The GAPS Instrument: A Large Area Time of Flight and High Resolution Exotic Atom Spectrometer for Cosmic Antinuclei

Author

Quinn, S., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Marcelli, N., Martucci, M., Mognet, S. I., Munakata, K., Munini, R., Nakagami, Y., Okazaki, S., Olson, J., Ong, R. A., Osteria, G., Perez, K., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Saijo, M., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tokunaga, K., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Settore ING-INF/01 - Elettronica
Published
2022

75. Neural Networks approach to event reconstruction for the GAPS experiment

Author

Marcelli, N., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Settore ING-INF/01 - Elettronica
Published
2022

76. A challenge to the highest balloon altitude

Author

Saito, Y., Akita, D., Fuke, H., Iijima, I., Izutsu, N., Kato, Y., Kawada, J., Matsuzaka, Y., Mizuta, E., Namiki, M., Nonaka, N., Ohta, S., Sato, T., Seo, M., Takada, A., Tamura, K., Toriumi, M., Yamagami, T., Yamada, K., Yoshida, T., Matsushima, K., and Tanaka, S.

Published
2012
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77. Search for Dark Matter signatures from cosmic-ray antinuclei with the GAPS experiment

Author

Tiberio, Alessio, primary, Aramaki, T., additional, Bird, R., additional, Boezio, M., additional, Boggs, S. E., additional, Bonvicini, V., additional, Campana, D., additional, Craig, W. W., additional, Everson, E., additional, Fabris, L., additional, Fuke, H., additional, Gahbauer, F., additional, Garcia, I., additional, Gerrity, C., additional, Hailey, C. J., additional, Hayashi, T., additional, Kato, C., additional, Kawachi, A., additional, Kobayashi, S., additional, Kozai, M., additional, Lenni, A., additional, Lowell, A., additional, Manghisoni, M., additional, Marcelli, N., additional, Mochizuki, B., additional, Mognet, S. I., additional, Munakata, K., additional, Munini, R., additional, Nakagami, Y., additional, Olson, J., additional, Ong, R. A., additional, Osteria, G., additional, Perez, K., additional, Quinn, S., additional, Re, V., additional, Riceputi, E., additional, Roach, B., additional, Rogers, F., additional, Ryan, J. A., additional, Saffold, N., additional, Scotti, V., additional, Shimizu, Y., additional, Sonzogni, M., additional, Sparvoli, R., additional, Stoessl, A., additional, Vannuccini, E., additional, von Doetinchem, P., additional, Wada, T., additional, Xiao, M., additional, Yamatami, M., additional, Yoshida, A., additional, Yoshida, T., additional, Zampa, G., additional, and Zweerink, J., additional

Published
2022
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78. Searching for cosmic antihelium nuclei with the GAPS experiment

Author

Stoessl, A., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Marcelli, N., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., Zweerink, J., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Astroparticle Physics, cosmic rays, Readout electronics, Dark matter, Detectors, GAPS, cosmic antihelium, Settore ING-INF/01 - Elettronica, cosmic ray
Abstract

At low energies, cosmic antideuterons and antihelium provide an ultra-low background signature of dark matter annihilation, decay, and other beyond the Standard Model phenomena. The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment designed to search for lowenergy (0.1−0.3 GeV/n) antinuclei, and is planned to launch in the austral summer of 2022. While optimized for an antideuteron search, GAPS also has unprecedented capabilites for the detection of low-energy antihelium nuclei, utilizing a novel detection technique based on the formation, decay, and annihilation of exotic atoms. The AMS-02 collaboration has recently reported several antihelium nuclei candidate events, which sets GAPS in a unique position to set constraints on the cosmic antihelium flux in an energy region which is essentially free of astrophysical background. In this contribution, we illustrate the capabilities of GAPS to search for cosmic antihelium-3 utilizing complete instrument simulations, event reconstruction, and the inclusion of atmospheric effects. We show that GAPS is capable of setting unprecedented limits on the cosmic antihelium flux, opening a new window on exotic cosmic physics.

Published
2021

79. Neural Networks approach to event reconstruction for the GAPS experiment

Author

Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., Zweerink, J., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
GAPS, neural networks, event reconstruction, neural network
Abstract

The General Antiparticle Spectrometer (GAPS) is a balloon-borne experiment, scheduled for a first flight in the austral summer 2022. It is designed to measure low energy (< 0.25 GeV/n) cosmic antinuclei. A particular focus is on antideuterons, which are predicted to have an ultra-low astrophysical background as compared to signals from dark matter annihilation or decay in the Galactic halo. GAPS uses a novel technique for particle identification based on the formation and decay of exotic atoms. To achieve sufficient rejection power for particle identification, an accurate determination of several fundamental quantities is needed. The precise reconstruction of the energy deposition pattern on the primary track is a particularly intricate problem and we developed a strategy devised to solve this using modern machine learning techniques. In the future, this approach can also be used for particle identification. Here, we present preliminary results of these efforts obtained from simulations.

Published
2021

83. Mission Design of LiteBIRD

Author

Matsumura, T., Akiba, Y., Borrill, J., Chinone, Y., Dobbs, M., Fuke, H., Ghribi, A., Hasegawa, M., Hattori, K., Hattori, M., Hazumi, M., Holzapfel, W., Inoue, Y., Ishidoshiro, K., Ishino, H., Ishitsuka, H., Karatsu, K., Katayama, N., Kawano, I., Kibayashi, A., Kibe, Y., Kimura, K., Kimura, N., Koga, K., Kozu, M., Komatsu, E., Lee, A., Matsuhara, H., Mima, S., Mitsuda, K., Mizukami, K., Morii, H., Morishima, T., Murayama, S., Nagai, M., Nagata, R., Nakamura, S., Naruse, M., Natsume, K., Nishibori, T., Nishino, H., Noda, A., Noguchi, T., Ogawa, H., Oguri, S., Ohta, I., Otani, C., Richards, P., Sakai, S., Sato, N., Sato, Y., Sekimoto, Y., Shimizu, A., Shinozaki, K., Sugita, H., Suzuki, T., Suzuki, A., Tajima, O., Takada, S., Takakura, S., Takei, Y., Tomaru, T., Uzawa, Y., Wada, T., Watanabe, H., Yoshida, M., Yamasaki, N., Yoshida, T., and Yotsumoto, K.

Published
2014
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85. A new balloon base in Japan

Author

Fuke, H., Akita, D., Iijima, I., Izutsu, N., Kato, Y., Kawada, J., Matsuzaka, Y., Mizuta, E., Namiki, M., Nonaka, N., Ohta, S., Saito, Y., Seo, M., Takada, A., Tamura, K., Toriumi, M., Yamada, K., Yamagami, T., and Yoshida, T.

Published
2010
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87. New result of Antideuteron search in BESS-Polar II

Author

Sakai, Kenichi, primary, Abe, K., additional, Fuke, H., additional, Haino, S., additional, Hams, T., additional, Hasegawa, M., additional, Kim, K.C., additional, Lee, M.H., additional, Makida, Y., additional, Mitchell, J.W., additional, Nishimura, J., additional, Nozaki, M., additional, Orito, R., additional, Ormes, J.F., additional, Picot-Clemente, N., additional, Sasaki, M., additional, Seo, E.S., additional, Streltmatter, R.E., additional, Thakur, N., additional, Yamamoto, A., additional, Yoshida, T., additional, and Yoshimura, K., additional

Published
2021
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88. Cosmic Antiproton Sensitivity for the GAPS Experiment

Author

Rogers, Field, primary, Aramaki, T, additional, Bird, R, additional, Aramaki, T., additional, Bird, R., additional, Boezio, M., additional, Boggs, S. E., additional, Bonvicini, V., additional, Campana, D., additional, Craig, W. W., additional, Everson, E., additional, Fabris, L., additional, Fuke, H., additional, Gahbauer, F., additional, Garcia, I., additional, Gerrity, C., additional, Hailey, C. J., additional, Hayashi, T., additional, Kato, C., additional, Kawachi, A., additional, Kobayashi, S., additional, Kozai, M., additional, Lenni, A., additional, Lowell, A., additional, Manghisoni, M., additional, Marcelli, N., additional, Mochizuki, B., additional, Mognet, S. A. I., additional, Munakata, K., additional, Munini, R., additional, Nakagami, Y., additional, Olson, J., additional, Ong, R. A., additional, Osteria, G., additional, Perez, K., additional, Quinn, S., additional, Re, V., additional, Riceputi, E., additional, Roach, B., additional, Ryan, J. A., additional, Saffold, N., additional, Scotti, V., additional, Shimizu, Y., additional, Sonzogni, M., additional, Sparvoli, R., additional, Stoessl, A., additional, Tiberio, A., additional, Vannuccini, E., additional, von Doetinchem, P., additional, Wada, T., additional, Xiao, M., additional, Yamatani, M., additional, Yoshida, A., additional, Yoshida, T., additional, Zampa, G., additional, and Zweerink, J., additional

Published
2021
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89. Investigating the Vela SNR's Emission of Electron Cosmic Rays with CALET at the International Space Station

Author

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

Published
2021
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90. Reconstruction of antinucleus-annihilation events in the GAPS experiment

Author

Tiberio, Alessio, primary, Aramaki, T., additional, Bird, R., additional, Boezio, M., additional, Boggs, S. E., additional, Bonvicini, V., additional, Campana, D., additional, Craig, W. W., additional, Everson, E., additional, Fabris, L., additional, Fuke, H., additional, Gahbauer, F., additional, Garcia, I., additional, Gerrity, C., additional, Hailey, C. J., additional, Hayashi, T., additional, Kato, C., additional, Kawachi, A., additional, Kobayashi, S., additional, Kozai, M., additional, Lenni, A., additional, Lowell, A., additional, Manghisoni, M., additional, Marcelli, N., additional, Mochizuki, B., additional, Mognet, S. I., additional, Munakata, K., additional, Munini, R., additional, Nakagami, Y., additional, Olson, J., additional, Ong, R. A., additional, Osteria, G., additional, Perez, K., additional, Quinn, S., additional, Re, V., additional, Riceputi, E., additional, Roach, B., additional, Rogers, F., additional, Ryan, J. A., additional, Saffold, N., additional, Scotti, V., additional, Shimizu, Y., additional, Sonzogni, M., additional, Sparvoli, R., additional, Stoessl, A., additional, Vannuccini, E., additional, von Doetinchem, P., additional, Wada, T., additional, Xiao, M., additional, Yamatami, M., additional, Yoshida, A., additional, Yoshida, T., additional, Zampa, G., additional, and Zweerink, J., additional

Published
2021
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91. Cosmic-ray beryllium isotope ratio measured by BESS-Polar II

Author

Wada, Takuya, primary, Abe, K., additional, Fuke, H., additional, Haino, S., additional, Hams, T., additional, Hasegawa, M., additional, Kim, K. T., additional, Lee, M. H., additional, Makida, Y., additional, Mitchell, J. W., additional, Nishimura, J., additional, Nozaki, M., additional, Orito, R., additional, Ormes, J. F., additional, Sakai, K., additional, Sasaki, M., additional, Seo, E. S., additional, Streitmatter, R. E., additional, Thakur, N., additional, Yamamoto, A., additional, Yoshida, T., additional, and Yoshimura, K., additional

Published
2021
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93. BESS-Polar experiment: Progress and future prospects

Author

Yoshimura, K., Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Kim, K.C., Kumazawa, T., Kusumoto, A., Lee, M.-H., Makida, Y., Matsuda, S., Matsukawa, Y., Mitchell, J.W., Moiseev, A.A., Nishimura, J., Nozaki, M., Orito, R., Ormes, J.F., Sakai, K., Sasaki, M., Seo, E.S., Shikaze, Y., Shinoda, R., Streitmatter, R.E., Suzuki, J., Takeuchi, K., Thakur, N., Tanaka, K., Yamagami, T., Yamamoto, A., and Yoshida, T.

Published
2008
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95. CALET on the International Space Station: The first three years of observations

Author

Brogi, P, Adriani, O, Akaike, Y, Asano, K, Asaoka, Y, Bagliesi, Mg, Berti, E, Bigongiari, G, Binns, Wr, Bonechi, S, Bongi, M, Bruno, A, Buckley, Jh, Cannady, N, Castellini, G, Checchia, C, Cherry, Ml, Collazuol, G, Di Felice, V, Ebisawa, K, Fuke, H, Guzik, Tg, Hams, T, Hibino, K, Ichimura, M, Ioka, K, Ishizaki, W, Israel, Mh, Kasahara, K, Kataoka, J, Kataoka, R, Katayose, Y, Kato, C, Kawanaka, N, Kawakubo, Y, Kohri, K, Krawczynski, Hs, Krizmanic, Jf, Link, J, Maestro, P, Marrocchesi, Ps, Messineo, Am, Mitchell, Jw, Miyake, S, Moiseev, Aa, Mori, M, Mori, N, Motz, Hm, Munakata, K, Murakami, H, Nakahira, S, Nishimura, J, De Nolfo, Ga, Okuno, S, Ormes, Jf, Ospina, N, Ozawa, S, Pacini, L, Palma, F, Papini, P, Rauch, Bf, Ricciarini, Sb, Sakai, K, Sakamoto, T, Sasaki, M, Shimizu, Y, Shiomi, A, Sparvoli, R, Spillantini, P, Stolzi, F, Sugita, S, Suh, Je, Sulaj, A, Takahashi, I, Takita, M, Tamura, T, Terasawa, T, Torii, S, Tsunesada, Y, Uchihori, Y, Vannuccini, E, Wefel, Jp, Yamaoka, K, Yanagita, S, Yoshida, A, and Yoshida, K

Subjects
Physics, electron, Spectrometer, DARK MATTER, Settore FIS/04, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Astronomy, Cosmic ray, CALET, Electron, Condensed Matter Physics, Electromagnetic radiation, Atomic and Molecular Physics, and Optics, Spectral line, ANTIPROTONS, gamma rays, Cosmic rays, nuclei, International Space Station, Measuring instrument, Mathematical Physics
Abstract

The CALorimetric Electron Telescope CALET is a space instrument designed to carry out precision measurements of high energy cosmic-rays on the JEM-EF external platform on the International Space Station, where it has been collecting science data continuously since mid October 2015. In addition to its primary goal of identifying nearby sources of high-energy electrons and possible signatures of dark matter in the electron spectrum, CALET is carrying out extensive measurements of the energy spectra, relative abundances and secondary-to-primary ratios of elements from proton to iron, and even above (up to Z = 40), studying the details of galactic particle propagation and acceleration. An overview of CALET based on the data taken during the first three years of observations is presented, including a direct measurement of the electron+positron energy spectrum from 11 GeV to 4.8 TeV. The proton spectrum has been measured from 50 GeV to 10 TeV covering, for the first time with a single space-borne instrument, the whole energy interval previously investigated in separate sub-ranges by magnetic spectrometers and calorimetric instruments. Preliminary spectra of cosmic-ray nuclei are also presented, together with gamma-ray observations and searches for an e.m. counterpart of LIGO/Virgo GW events.

Published
2020

97. The BESS Program

Author

Yamamoto, A., Abe, K., Fuke, H., Haino, S., Hams, T., Kim, K., Lee, M.H., Makida, Y., Matsuda, S., Mitchell, J.W., Moiseev, A., Nishimura, J., Nozaki, M., Orito, R., Orito, S., Ormes, J.F., Sakai, K., Sanuki, T., Sasaki, M., Seo, E.S., Shikaze, Y., Streitmatter, R.E., Suzuki, J., Tanaka, K., Thakur, N., Yamagami, T., Yoshida, T., and Yoshimura, K.

Published
2007
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98. Time Variations of Cosmic-Ray Helium Isotopes with BESS-Polar I

Author

Abe, K, Fuke, H, Haino, S, Hams, T, Hasegawa, M, Horikoshi, A, Itazaki, A, Kim, K. C, Kumazawa, T, Kusumoto, A, Lee, M. H, Makida, Y, Matsuda, S, Matsukawa, Y, Matsumoto, K, Mitchell, J. W, Moiseev, A. A, Nishimura, J, Nozaki, M, Orito, R, Ormes, J. F, Picot-Clemente, N, Sakai, K, Sasaki, M, Seo, E. S, Shikaze, Y, and Streitmatter, R. E

Subjects
Astronomy
Abstract

The Balloon-borne Experiment with a Superconducting Spectrometer (BESS) is configured with a solenoidal superconducting magnet and a suite of precision particle detectors, including time-of-flight hodoscopes based on plastic scintillators, a silica-aerogel Cherenkov detector, and a high resolution tracking system with a central jet-type drift chamber. The charges of incident particles are determined from energy losses in the scintillators. Their magnetic rigidities (momentum/charge) are measured by reconstructing each particle trajectory in the magnetic field, and their velocities are obtained by using the time-of-flight system. Together, these measurements can accurately identify helium isotopes among the incoming cosmic-ray helium nuclei up to energies in the GeV per nucleon region. The BESS-Polar I instrument flew for 8.5 days over Antarctica from December 13th to December 21st, 2004. Its long-duration flight and large geometric acceptance allow the time variations of isotopic fluxes to be studied for the first time. The time variations of helium isotope fluxes are presented here for rigidities from 1.2 to 2.5 GV and results are compared to previously reported proton data and neutron monitor data.

Published
2013
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99. The CALorimetric Electron Telescope (CALET) for high-energy astroparticle physics on the International Space Station

Author

Adriani O., Akaike Y., Asano K., Asaoka Y., Bagliesi M.G., Bigongiari G., Binns W.R., Bonechi S., Bongi M., Buckley J.H., Castellini G., Cherry M.L., Collazuol G., Ebisawa K., Di Felice V., Fuke H., Guzik T.G., Hams T., Hareyama M., Hasebe N., Hibino K., Ichimura M., Ioka K., Israel M.H., Javaid A., Kamioka E., Kasahara K., Kataoka J., Kataoka R., Katayose Y., Kawanaka N., Kitamura H., Kotani T., Krawczynski H.S., Krizmanic J.F., Kubota A., Kuramata S., Lomtadze T., Maestro P., Marcelli L., Marrocchesi P.S., Mitchell J.W., Miyake S., Mizutani K., Moiseev A.A., Mori K., Mori M., Mori N., Motz H.M., Munakata K., Murakami H., Nakagawa Y.E., Nakahira S., Nishimura J., Okuno S., Ormes J.F., Ozawa S., Palma F., Papini P., Rauch B.F., Ricciarini S.B., Sakamoto T., Sasaki M., Shibata M., Shimizu Y., Shiomi A., Sparvoli R., Spillantini P., Takahashi I., 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., Yanagita S., Yoshida A., Yoshida K., and Yuda T.

Subjects
Physics, QC1-999
Abstract

The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma rays up to 10 TeV, of nuclei with Z from 1 to 40 up to 1 PeV energy, and will detect gamma-ray bursts in the 7 keV to 20 MeV energy range during a 5 year mission. These measurements are essential to investigate possible nearby astrophysical sources of high energy electrons, study the details of galactic particle propagation and search for dark matter signatures. The main detector of CALET, the Calorimeter, consists of a module to identify the particle charge, followed by a thin imaging calorimeter (3 radiation lengths) with tungsten plates interleaving scintillating fibre planes, and a thick energy measuring calorimeter (27 radiation lengths) composed of lead tungstate logs. The Calorimeter has the depth, imaging capabilities and energy resolution necessary for excellent separation between hadrons, electrons and gamma rays. The instrument is currently being prepared for launch (expected in 2015) to the International Space Station ISS, for installation on the Japanese Experiment Module - Exposure Facility (JEM-EF).

Published
2015
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100. Tuning properties of 2 GHz superconducting microstrip-line filters

Author

Fuke, H., Terashima, Y., Kayano, H., Yamazaki, M., Aiga, F., and Katoh, R.

Subjects
Dielectric films -- Research, Electrodes -- Research, High temperature superconductors -- Research, Microwave filters -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Research is presented concerning the design and construction of a 2-pole electrically tunable filter and a 2 GHz 12-pole superconducting microstrip line filter through the use of dielectric film and interdigital electrodes.

Published
2001

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