The CALorimetric Electron Telescope (CALET) has successfully been carrying out cosmic-ray observations on the International Space Station since October, 2015. CALET directly measures the cosmic-ray electron spectrum in the energy range of 1 GeV to 20 TeV with a 2 % energy resolution above 30 GeV. In addition, the instrument can measure the spectrum of gamma rays well into the TeV range, and the spectra of protons and nuclei up to a PeV. The scientific operations are implemented by taking into account orbital variations of geomagnetic rigidity cutoff. Scheduled command sequences are used to control the CALET observation modes on orbit. The high-energy (> 10 GeV) trigger mode is always active for maintaining maximum exposure to high-energy electrons and other high-energy shower events. Also, around the ISS orbit, calibration data acquisition by, for example, recording pedestal and penetrating particle events, a low-energy electron trigger mode operating at high geomagnetic latitude, a low-energy gamma-ray trigger mode operating at low geomagnetic latitude, and an ultra-heavy trigger mode, are scheduled. As of June 30, 2023, the total observation time is 2818 days with a live time fraction of the total time around 86 %. Nearly 1.86 billion events are collected with the high-energy trigger.

Status of the operations of CALET for 7.5 years on the International Space Station / Tamura, Tadahisa; Akaike, Yosui; Kobayashi, Kenko; Adriani, Oscar; Asano, Katsuaki; Asaoka, Yoichi; Berti, Eugenio; Bigongiari, Gabriele; Binns, Walter Robert; Bongi, Massimo; Brogi, Paolo; Bruno, Alessandro; Cannady, Nicholas W; Castellini, Guido; Checchia, Caterina; Cherry, Walter Robert; Collazuol, Gianmaria; de Nolfo, Georgia A.; Ebisawa, Ken; Ficklin, Anthony W.; Fuke, Hideyuki; Gonzi, Sandro; Guzik, T. Gregory; Hams, Thomas; Hibino, Kinya; Ichimura, Masakatsu; Ioka, Kunihito; Ishizaki, Wataru; Israel, Martin H.; Kasahara, Katsumasa; Kataoka, Jun; Kataoka, Ryuho; Katayose, Yusaku; Kato, Chihiro; Kawanaka, Norita; Kawakubo, Yuta; Kohri, Kazunori; Krawczynski, Henric S.; Krizmanic, John F.; Maestro, Paolo; Marrocchesi, Pier Simone; Messineo, Alberto Maria; Mitchell, Jason W.; Miyake, Shoko; Moiseev, Alexander; Mori, Masaki; Mori, Nicola; Motz, Holger Martin; Munakata, Kazuoki; Nakahira, Satoshi; Nishimura, Jun; Okuno, Shoji; Ormes, Jonathan; Ozawa, Shunsuke; Pacini, Lorenzo; Papini, Paolo; Rauch, Brian Flint; Ricciarini, Sergio Bruno; Sakai, Kazuhiro; Sakamoto, Takanori; Sasaki, Makoto; Shimizu, Yuki; Shiomi, Atsushi; Spillantini, Piero; Stolzi, Francesco; Sugita, Satoshi; Sulaj, Arta; Takita, Masato; Terasawa, Toshio; Torii, Shoji; Tsunesada, Yoshiki; Uchihori, Yukio; Vannuccini, Elena; Wefel, John P.; Yamaoka, Kazutaka; Yanagita, Shohei; Yoshida, Atsumasa; Yoshida, Kenji; Zober, Wolfgang V;. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 444 - 38th International Cosmic Ray Conference (ICRC2023):(2024), pp. 094.0-094.0. [10.22323/1.444.0094]

Status of the operations of CALET for 7.5 years on the International Space Station

Adriani, Oscar;Berti, Eugenio;Bongi, Massimo;Gonzi, Sandro;Spillantini, Piero;
2024

Abstract

The CALorimetric Electron Telescope (CALET) has successfully been carrying out cosmic-ray observations on the International Space Station since October, 2015. CALET directly measures the cosmic-ray electron spectrum in the energy range of 1 GeV to 20 TeV with a 2 % energy resolution above 30 GeV. In addition, the instrument can measure the spectrum of gamma rays well into the TeV range, and the spectra of protons and nuclei up to a PeV. The scientific operations are implemented by taking into account orbital variations of geomagnetic rigidity cutoff. Scheduled command sequences are used to control the CALET observation modes on orbit. The high-energy (> 10 GeV) trigger mode is always active for maintaining maximum exposure to high-energy electrons and other high-energy shower events. Also, around the ISS orbit, calibration data acquisition by, for example, recording pedestal and penetrating particle events, a low-energy electron trigger mode operating at high geomagnetic latitude, a low-energy gamma-ray trigger mode operating at low geomagnetic latitude, and an ultra-heavy trigger mode, are scheduled. As of June 30, 2023, the total observation time is 2818 days with a live time fraction of the total time around 86 %. Nearly 1.86 billion events are collected with the high-energy trigger.
2024
444 - 38th International Cosmic Ray Conference (ICRC2023)
0
0
Tamura, Tadahisa; Akaike, Yosui; Kobayashi, Kenko; Adriani, Oscar; Asano, Katsuaki; Asaoka, Yoichi; Berti, Eugenio; Bigongiari, Gabriele; Binns, Walter Robert; Bongi, Massimo; Brogi, Paolo; Bruno, Alessandro; Cannady, Nicholas W; Castellini, Guido; Checchia, Caterina; Cherry, Walter Robert; Collazuol, Gianmaria; de Nolfo, Georgia A.; Ebisawa, Ken; Ficklin, Anthony W.; Fuke, Hideyuki; Gonzi, Sandro; Guzik, T. Gregory; Hams, Thomas; Hibino, Kinya; Ichimura, Masakatsu; Ioka, Kunihito; Ishizaki, Wataru; Israel, Martin H.; Kasahara, Katsumasa; Kataoka, Jun; Kataoka, Ryuho; Katayose, Yusaku; Kato, Chihiro; Kawanaka, Norita; Kawakubo, Yuta; Kohri, Kazunori; Krawczynski, Henric S.; Krizmanic, John F.; Maestro, Paolo; Marrocchesi, Pier Simone; Messineo, Alberto Maria; Mitchell, Jason W.; Miyake, Shoko; Moiseev, Alexander; Mori, Masaki; Mori, Nicola; Motz, Holger Martin; Munakata, Kazuoki; Nakahira, Satoshi; Nishimura, Jun; Okuno, Shoji; Ormes, Jonathan; Ozawa, Shunsuke; Pacini, Lorenzo; Papini, Paolo; Rauch, Brian Flint; Ricciarini, Sergio Bruno; Sakai, Kazuhiro; Sakamoto, Takanori; Sasaki, Makoto; Shimizu, Yuki; Shiomi, Atsushi; Spillantini, Piero; Stolzi, Francesco; Sugita, Satoshi; Sulaj, Arta; Takita, Masato; Terasawa, Toshio; Torii, Shoji; Tsunesada, Yoshiki; Uchihori, Yukio; Vannuccini, Elena; Wefel, John P.; Yamaoka, Kazutaka; Yanagita, Shohei; Yoshida, Atsumasa; Yoshida, Kenji; Zober, Wolfgang V;
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1350549
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