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1. Design Method for Single-Blade Centrifugal Pump Impeller

Author

Yasuyuki NISHI, Ryota FUJIWARA, and Junichiro FUKUTOMI

Subjects
turbomachinery, centrifugal impeller, single blade, design method, cfd, Science (General), Q1-390, Technology
Abstract

The sewage pumps are demanded a high pump efficiency and a performance in passing foreign bodies. Therefore, the impeller used by these usages requires the large passed particle size (minimum particle size in the pump). However, because conventional design method of pump impeller results in small impeller exit width, it is difficult to be applied to the design of single-blade centrifugal pump impeller which is used as a sewage pump. This paper proposes a design method for single-blade centrifugal pump impeller. As a result, the head curve of the impeller designed by the proposed design method satisfied design specifications, and pump efficiency was over 62% more than conventional single-blade centrifugal pump impeller. By comparing design values with CFD analysis values, the suction velocity ratio of the design parameter agreed well with each other, but the relative velocity ratio did not agree due to the influence of the backflow of the impeller entrance.

Published
2009
Full Text
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3. ПОИСК НЕЙТРИНО УЛЬТРАВЫСОКИХ ЭНЕРГИЙ ПО ДАННЫМ НАЗЕМНОЙ РЕШЕТКИ ЭКСПЕРИМЕНТА TELESCOPE ARRAY

Author

Taka Tomida, J. Remington, Kenta Yashiro, Yasunori Saito, M. Abe, O. Kalashev, Jonathan Smith, Takeshi Okuda, Igor Tkachev, N. Inoue, M. Ohnishi, Federico R. Urban, Yuichiro Tameda, H. Oda, Akimichi Taketa, T. Suzawa, Naoaki Hayashida, Shingo Kawana, Yasuhiro H. Takahashi, John N. Matthews, Isaac Myers, Vladim Kuzmin, William Hanlon, Elliott Barcikowski, Seok Ho Jeong, K. Nagasawa, B. G. Cheon, Hidemi Ito, Fumiya Shibata, Zach Zundel, J. Yang, S. Kitamura, Dmitri Ivanov, Keijiro Mukai, R. Sahara, John Belz, Y. J. Kwon, Hideyuki Ohoka, Fumio Kakimoto, Toshiyuki Nonaka, Toshitsugu Fujii, Daisuke Ikeda, R. Ishimori, Yuta Tanoue, D. R. Bergman, S. R. Stratton, G. Furlich, Takaaki Ishii, Tiffany Wong, Hideki Tanaka, K. Kadota, Inkyu Park, Motoki Hayashi, Hisono Tokuno, T. K. Sako, J. P. Lundquist, D. C. Rodriguez, Ben Stokes, Toru Nakamura, K. Yamazaki, Hongsu Kim, S. B. Thomas, Masahiro Fukushima, S. Kawakami, K. Hibino, Pierre Sokolsky, Ryo Nakamura, K. H. Lee, Jihee Kim, T.-A. Shibata, Eiji Kido, M. V. Kuznetsov, Kazuhiro Machida, Hiroshi Yamaoka, Keitaro Fujita, M. Takeda, Shigehiro Nagataki, Yana Zhezher, Y. Uchihori, Kei Nakai, Kohei Yada, Gordon Thomson, Tom Stroman, Robert Cady, Kazuo Saito, Charlie Jui, BayarJon Paul Lubsandorzhiev, Hiroyuki Sagawa, Mayuko Minamino, Michiyuki Chikawa, K. Honda, Yasunori Kitamura, Grigory Rubtsov, Masaaki Tanaka, Kalen Martens, M. Takita, H. Yoshii, Bokkyun Shin, Koichi Sekino, Kiyoshi Tanaka, Maxim Pshirkov, Jyunsei Chiba, P. Tinyakov, Dongsu Ryu, Y. Omura, Mai Takamura, Y. Takagi, Samuel Blake, Shoichi Ogio, Priti Shah, Ryuji Takeishi, J. Ogura, M. Allen, K. Kasahara, Shoichi Kishigami, Akitoshi Oshima, Y. Tsunesada, Hideaki Shimodaira, Hyoming Jeong, Masaomi Ono, K. Tsutsumi, Rasha Abbasi, Tareq Abu-Zayyad, L. M. Scott, Y. Hayashi, K. Kawata, M. Yamamoto, Nobuyuki Sakurai, Ryota Onogi, J. H. Kim, A. Di Matteo, Ryota Fujiwara, R. Mayta, Heungsu Shin, Naoto Sakaki, Shigeharu Udo, R. Azuma, H. Kawai, T. Seki, T. Matsuyama, S. Ozawa, and Sergey Troitsky

Subjects
General Physics and Astronomy
Published
2020

4. Study on the cosmic ray intensity variation using scintillation counters for air shower observation

Author

Ryuji Takeishi, Daiki Shinto, Priti Shah, Michiyuki Chikawa, Ryo Nakamura, Shingo Kawana, Rasha Abbasi, Masahiro Takeda, Ken Honda, Takashi Sako, M. Ohnishi, Taichi Inadomi, Kinya Hibino, William Hanlon, Sergey Troitsky, Fumiya Shibata, Saori Kasami, G. Furlich, Takaaki Ishii, Aoi Iwasaki, Taka Tomida, Jyunsei Chiba, Dongsu Ryu, Fugo Yoshida, J. Remington, Ben Stokes, Min Hyo Kim, Koki Sato, Zach Zundel, Matt Potts, Kenta Yashiro, Hirokazu Iwakura, Kengo Sano, Federico R. Urban, Nobuyuki Sakurai, Y. Takagi, D. C. Rodriguez, HangBae Kim, Vladim Kuzmin, Hideki Tanaka, Shinnosuke Kurisu, Keitaro Fujita, Shigeharu Udo, Hisono Tokuno, Hideaki Shimodaira, Hyoming Jeong, Takeshi Okuda, Igor Tkachev, Naohiro Sone, Naoaki Hayashida, Tatsunobu Shibata, H. Oda, Ivan Kharuk, Ryuhei Arimura, S. Kawakami, Stanton Thomas, Akitoshi Oshima, Ryota Fujiwara, Toshiyuki Nonaka, Ryo Higuchi, Shunsuke Ozawa, Yuta Tanoue, Ricardo Gonzalez, Yoshiki Tsunesada, Daisuke Ikeda, Naoto Sakaki, Katsuaki Kasahara, Pierre Sokolsky, Yuya Oku, Arata Nakazawa, Katsumasa Kawata, Charlie Jui, Motoki Hayashi, Shigehiro Nagataki, Oleg Kalashev, Tiffany Wong, Samuel Blake, Hirotaka Ito, Shoichi Ogio, Yana Zhezher, Hiroyuki Sagawa, Kei Nakai, BayarJon Paul Lubsandorzhiev, Sang Woo Kim, Masaki Fukushima, Fumio Kakimoto, M. Yamamoto, Yuichiro Tameda, Heungsu Shin, Mayuko Minamino, K. Yamazaki, Kozo Fujisue, Jeremy Smith, Tareq Abu-Zayyad, John Matthews, Tsubasa Yoshioka, Koichi Tanaka, J. Yang, Tomoyuki Nakamura, Yukio Uchihori, Toru Nakamura, Koichi Sekino, Jon Paul Lundquist, Kenichi Kadota, Youngjoon Kwon, John Belz, Akimichi Taketa, Eiji Nishio, P. Tinyakov, Il Hung Park, Masato Takita, Ryota Fukushima, Ryota Onogi, J. H. Kim, Mikhail Kuznetsov, Maxim Pshirkov, Y. Takahashi, Mai Takamura, Yuto Arai, Isaac Myers, Hideyuki Kawai, Yuma Shibasaki, R. Mayta, Douglas Bergman, Grigory Rubtsov, Ryosuke Tsuda, Soomin Jeong, R. Sahara, T. Seki, Naoya Inoue, Yasunori Saito, Hiroyuki Matsumiya, Takafumi Uehama, Eiji Kido, Kazuhiro Machida, Telescope Array, Shoichi Kishigami, Masaomi Ono, Norimichi Shibata, Y. Omura, Monica Allen, Bokkyun Shin, ByongGu Cheon, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Hideyuki Ohoka, Yusuke Kimura, Toshio Matsuyama, Manobu Tanaka, K. H. Lee, Jihee Kim, Gordon Thomson, Tom Stroman, Robert Cady, Toshihiro Fujii, Yuto Kubota, Y. Nakamura, and Kohei Yada

Subjects
Physics, Air shower, Scintillation counter, Cosmic ray, Astrophysics, Variation (astronomy), Intensity (heat transfer)
Published
2021

5. Anisotropy search in the Ultra High Energy Cosmic Ray Spectrum in the Northern Hemisphere using latest data obtained with Telescope Array surface detector

Author

Grigory Rubtsov, John Matthews, Norimichi Shibata, Y. Omura, J. Yang, Fumiya Shibata, Shingo Kawana, M. Ohnishi, Taichi Inadomi, Matt Potts, William Hanlon, Monica Allen, Bokkyun Shin, Fugo Yoshida, Yuma Shibasaki, ByongGu Cheon, Ben Stokes, Douglas Bergman, Jyunsei Chiba, Dongsu Ryu, Toshihiro Fujii, Koki Sato, Yasunori Saito, M. Yamamoto, Hirokazu Iwakura, Y. Takagi, Ryuhei Arimura, Hideyuki Ohoka, Yuto Kubota, Federico R. Urban, Nobuyuki Sakurai, Kengo Sano, Mikhail Kuznetsov, Heungsu Shin, Ivan Kharuk, Yukio Uchihori, Keitaro Fujita, K. H. Lee, Jihee Kim, Yoshiki Tsunesada, Daisuke Ikeda, Hirotaka Ito, Sergey Troitsky, Yuto Arai, Ryota Onogi, J. H. Kim, Maxim Pshirkov, Takeshi Okuda, Y. Nakamura, Kohei Yada, Charlie Jui, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Hiroyuki Matsumiya, Igor Tkachev, R. Mayta, Hideki Tanaka, Naohiro Sone, Ryosuke Tsuda, Tiffany Wong, Taka Tomida, J. Remington, Masaki Fukushima, Takafumi Uehama, Aoi Iwasaki, Daiki Shinto, Hideaki Shimodaira, Hyoming Jeong, Shoichi Kishigami, Soomin Jeong, Shigeharu Udo, Eiji Kido, Hiroyuki Sagawa, Takashi Sako, Ryo Higuchi, Hisono Tokuno, H. Oda, Gordon Thomson, Tom Stroman, Priti Shah, Ryo Nakamura, Robert Cady, Kazuhiro Machida, Masahiro Takeda, Pierre Sokolsky, Naoaki Hayashida, Ken Honda, Tatsunobu Shibata, T. Seki, G. Furlich, Takaaki Ishii, R. Sahara, Fumio Kakimoto, Naoya Inoue, Akitoshi Oshima, Vladim Kuzmin, Ryuji Takeishi, Ryota Fukushima, Shigehiro Nagataki, Shunsuke Ozawa, K. Yamazaki, Masaomi Ono, Elliott Barcikowski, Toshiyuki Nonaka, Saori Kasami, Tareq Abu-Zayyad, Zach Zundel, Yana Zhezher, Kenta Yashiro, Dmitri Ivanov, D. C. Rodriguez, Ricardo Gonzalez, Samuel Blake, Sang Woo Kim, Kinya Hibino, Shoichi Ogio, Keijiro Mukai, HangBae Kim, Yusuke Kimura, Rasha Abbasi, Koichi Tanaka, Yuya Oku, Michiyuki Chikawa, Jon Paul Lundquist, Katsuaki Kasahara, Stanton Thomas, Katsumasa Kawata, Oleg Kalashev, Yuichiro Tameda, Tomoyuki Nakamura, Tsubasa Yoshioka, Arata Nakazawa, Masato Takita, Toru Nakamura, Telescope Array, Min Hyo Kim, Toshio Matsuyama, Kei Nakai, Ryota Fujiwara, Kenichi Kadota, Manobu Tanaka, Il Hung Park, Naoto Sakaki, S. Kawakami, Akimichi Taketa, Eiji Nishio, Hideyuki Kawai, Shinnosuke Kurisu, Jeremy Smith, Isaac Myers, Youngjoon Kwon, John Belz, Koichi Sekino, P. Tinyakov, Y. Takahashi, Mai Takamura, Yuta Tanoue, Motoki Hayashi, and Kozo Fujisue

Subjects
Surface (mathematics), Telescope, Physics, law, Detector, Northern Hemisphere, Astrophysics, Ultra-high-energy cosmic ray, Anisotropy, law.invention
Published
2021

6. The measurements of the cosmic ray energy spectrum and the depth of maximum shower development of Telescope Array Hybrid trigger events

Author

Katsuaki Kasahara, Shinnosuke Kurisu, Katsumasa Kawata, Shingo Kawana, William Hanlon, Tsubasa Yoshioka, R. Sahara, Hideaki Shimodaira, Hyoming Jeong, Ryo Higuchi, Norimichi Shibata, Monica Allen, Bokkyun Shin, Jeremy Smith, Y. Omura, Vladim Kuzmin, G. Furlich, Takaaki Ishii, Akimichi Taketa, Toshio Matsuyama, Eiji Nishio, ByongGu Cheon, K. Yamazaki, Tareq Abu-Zayyad, Toshiyuki Nonaka, Hideyuki Ohoka, D. C. Rodriguez, Fumiya Shibata, Hiroyuki Matsumiya, Fugo Yoshida, HangBae Kim, Hiroyuki Sagawa, Ricardo Gonzalez, Pierre Sokolsky, Tatsunobu Shibata, Hideyuki Kawai, Takafumi Uehama, Manobu Tanaka, Rasha Abbasi, Takeshi Okuda, Youngjoon Kwon, John Belz, Yuma Shibasaki, Shigehiro Nagataki, Matt Potts, Yana Zhezher, Mikhail Kuznetsov, Akitoshi Oshima, Igor Tkachev, Sang Woo Kim, Eiji Kido, Koichi Tanaka, K. H. Lee, Jihee Kim, Kazuhiro Machida, Isaac Myers, Naohiro Sone, Shunsuke Ozawa, Hideki Tanaka, Heungsu Shin, Douglas Bergman, Gordon Thomson, Ryo Nakamura, Jon Paul Lundquist, Tom Stroman, Robert Cady, Yuta Tanoue, Ben Stokes, H. Oda, Grigory Rubtsov, Tomoyuki Nakamura, Yasunori Saito, Yuto Arai, Motoki Hayashi, Ryota Fujiwara, Federico R. Urban, Nobuyuki Sakurai, Ryosuke Tsuda, Hirotaka Ito, Hisono Tokuno, Elliott Barcikowski, Charlie Jui, Soomin Jeong, Naoto Sakaki, Kozo Fujisue, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Yuya Oku, Oleg Kalashev, Dmitri Ivanov, Fumio Kakimoto, Arata Nakazawa, Kenta Yashiro, Kei Nakai, T. Seki, Naoya Inoue, Keijiro Mukai, Min Hyo Kim, Yusuke Kimura, S. Kawakami, Stanton Thomas, M. Ohnishi, Taichi Inadomi, Koki Sato, Sergey Troitsky, Kengo Sano, Aoi Iwasaki, Toshihiro Fujii, Michiyuki Chikawa, Toru Nakamura, Taka Tomida, J. Remington, Kenichi Kadota, Yuto Kubota, Il Hung Park, Saori Kasami, Y. Nakamura, Kohei Yada, Koichi Sekino, Naoaki Hayashida, P. Tinyakov, Ryuji Takeishi, Ryuhei Arimura, Yoshiki Tsunesada, Daisuke Ikeda, Tiffany Wong, Masaki Fukushima, Takashi Sako, Zach Zundel, John Matthews, J. Yang, Daiki Shinto, Priti Shah, Jyunsei Chiba, Dongsu Ryu, Masahiro Takeda, Ken Honda, Hirokazu Iwakura, Y. Takagi, Shigeharu Udo, Keitaro Fujita, Ryota Fukushima, Ivan Kharuk, M. Yamamoto, Yukio Uchihori, Ryota Onogi, J. H. Kim, R. Mayta, Kinya Hibino, Yuichiro Tameda, Masato Takita, Shoichi Kishigami, Y. Takahashi, Mai Takamura, Masaomi Ono, Telescope Array, Samuel Blake, Shoichi Ogio, and Maxim Pshirkov

Subjects
Telescope, Physics, Shower, law, Energy spectrum, Astronomy, Cosmic ray, law.invention
Published
2021

7. Cosmic ray energy spectrum in the 2nd knee region measured by the TALE-SD array

Author

Taka Tomida, J. Remington, G. Furlich, Takaaki Ishii, D. C. Rodriguez, Stanton Thomas, Hideki Tanaka, HangBae Kim, Fumiya Shibata, Naoaki Hayashida, Hiroyuki Matsumiya, ByongGu Cheon, Fugo Yoshida, Michiyuki Chikawa, Pierre Sokolsky, Shigehiro Nagataki, Yana Zhezher, Isaac Myers, Maxim Pshirkov, Sang Woo Kim, Matt Potts, Telescope Array, Hisono Tokuno, Ryuhei Arimura, Vladim Kuzmin, Daiki Shinto, Toru Nakamura, Takafumi Uehama, Koichi Sekino, Tomoyuki Nakamura, Takeshi Okuda, P. Tinyakov, Heungsu Shin, R. Sahara, Aoi Iwasaki, Yoshiki Tsunesada, Kenichi Kadota, Priti Shah, Daisuke Ikeda, Igor Tkachev, Il Hung Park, Toshiyuki Nonaka, Hideyuki Ohoka, Shoichi Kishigami, Rasha Abbasi, Masahiro Takeda, Naohiro Sone, Arata Nakazawa, Y. Takahashi, Mai Takamura, Ricardo Gonzalez, Tiffany Wong, Eiji Kido, Kei Nakai, Ben Stokes, Kazuhiro Machida, Masaki Fukushima, Ken Honda, H. Oda, Katsuaki Kasahara, Masaomi Ono, Yuto Arai, Toshihiro Fujii, Jyunsei Chiba, Katsumasa Kawata, Takashi Sako, Charlie Jui, Yuta Tanoue, Dongsu Ryu, Federico R. Urban, Nobuyuki Sakurai, Motoki Hayashi, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Kenta Yashiro, Yuto Kubota, Saori Kasami, Kozo Fujisue, Tsubasa Yoshioka, John Matthews, Hirokazu Iwakura, Shingo Kawana, Y. Takagi, Ryosuke Tsuda, Soomin Jeong, Yasunori Saito, Zach Zundel, J. Yang, William Hanlon, Fumio Kakimoto, Grigory Rubtsov, Ryuji Takeishi, Tatsunobu Shibata, Samuel Blake, Shoichi Ogio, T. Seki, Akitoshi Oshima, Yuya Oku, M. Ohnishi, Ryota Fujiwara, Taichi Inadomi, Y. Nakamura, Oleg Kalashev, Kohei Yada, Keitaro Fujita, Shunsuke Ozawa, Koki Sato, Yuichiro Tameda, Monica Allen, Bokkyun Shin, Naoto Sakaki, Naoya Inoue, Kengo Sano, Ryota Fukushima, Hirotaka Ito, Youngjoon Kwon, Ivan Kharuk, Masato Takita, John Belz, Norimichi Shibata, Y. Omura, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Yusuke Kimura, Hideaki Shimodaira, Hyoming Jeong, Kinya Hibino, Ryo Higuchi, Toshio Matsuyama, K. Yamazaki, Tareq Abu-Zayyad, Manobu Tanaka, K. H. Lee, Jihee Kim, Gordon Thomson, Tom Stroman, Akimichi Taketa, Robert Cady, Mikhail Kuznetsov, Eiji Nishio, M. Yamamoto, Yukio Uchihori, Ryota Onogi, J. H. Kim, R. Mayta, Shigeharu Udo, Hideyuki Kawai, Shinnosuke Kurisu, Ryo Nakamura, Jeremy Smith, Yuma Shibasaki, Min Hyo Kim, Douglas Bergman, S. Kawakami, Hiroyuki Sagawa, Koichi Tanaka, Jon Paul Lundquist, and Sergey Troitsky

Subjects
Physics, Energy spectrum, Cosmic ray, Knee region, Astrophysics
Published
2021

8. Cosmic Ray Composition between 2 PeV and 2 EeV measured by the TALE Fluorescence Detector

Author

Shigeharu Udo, Daiki Shinto, Fumiya Shibata, Priti Shah, Stanton Thomas, Norimichi Shibata, Y. Omura, Matt Potts, Masahiro Takeda, Ken Honda, Ryo Nakamura, Youngjoon Kwon, Vladim Kuzmin, John Belz, Telescope Array, Yasunori Saito, Shinnosuke Kurisu, Yuta Tanoue, Motoki Hayashi, Tatsunobu Shibata, ByongGu Cheon, Saori Kasami, M. Yamamoto, Takeshi Okuda, Igor Tkachev, Naohiro Sone, Fumio Kakimoto, John N. Matthews, K. H. Lee, Jihee Kim, Tomoyuki Nakamura, Yukio Uchihori, J. P. Lundquist, Akitoshi Oshima, Hideyuki Ohoka, Michiyuki Chikawa, Toru Nakamura, Fugo Yoshida, Ryota Onogi, J. H. Kim, Keitaro Fujita, Kozo Fujisue, Hideki Tanaka, Shunsuke Ozawa, Jeremy Smith, Kenichi Kadota, Il Hung Park, H. Oda, Takashi Sako, Charlie Jui, Hiroyuki Matsumiya, R. Mayta, Shoichi Kishigami, Akimichi Taketa, Gordon Thomson, Hisono Tokuno, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Takafumi Uehama, Ryota Fujiwara, Eiji Nishio, Sergey Troitsky, Kinya Hibino, Min Hyo Kim, Masaomi Ono, Maxim Pshirkov, Tom Stroman, Robert Cady, Pierre Sokolsky, Taka Tomida, Shingo Kawana, Eiji Kido, Kazuhiro Machida, J. Remington, Naoto Sakaki, Katsuaki Kasahara, Shigehiro Nagataki, Yana Zhezher, M. Ohnishi, Taichi Inadomi, Yuto Kubota, Zach Zundel, Ben Stokes, William Hanlon, Sang Woo Kim, Koki Sato, Federico R. Urban, Nobuyuki Sakurai, Hideyuki Kawai, Yuma Shibasaki, Ryuhei Arimura, Katsumasa Kawata, J. Yang, Koichi Sekino, Monica Allen, Bokkyun Shin, Naoaki Hayashida, Kengo Sano, P. Tinyakov, Yoshiki Tsunesada, Daisuke Ikeda, Y. Nakamura, Douglas Bergman, Kohei Yada, S. Kawakami, Kenta Yashiro, Y. Takahashi, Mai Takamura, Tiffany Wong, Heungsu Shin, Tsubasa Yoshioka, Masaki Fukushima, Yuya Oku, Oleg Kalashev, Hiroyuki Sagawa, Samuel Blake, Shoichi Ogio, Toshiyuki Nonaka, Ricardo Gonzalez, Yuichiro Tameda, Yuto Arai, Koichi Tanaka, Rasha Abbasi, T. Fujii, Masato Takita, Toshio Matsuyama, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Manobu Tanaka, Yusuke Kimura, Ryosuke Tsuda, Soomin Jeong, T. Seki, Naoya Inoue, Arata Nakazawa, Kei Nakai, G. Furlich, Takaaki Ishii, D. C. Rodriguez, HangBae Kim, Isaac Myers, Hideaki Shimodaira, Hyoming Jeong, Ryo Higuchi, K. Yamazaki, Tareq Abu-Zayyad, Mikhail Kuznetsov, Grigory Rubtsov, Hirotaka Ito, Aoi Iwasaki, Ivan Kharuk, Ryuji Takeishi, R. Sahara, Ryota Fukushima, Jyunsei Chiba, Dongsu Ryu, Hirokazu Iwakura, and Y. Takagi

Subjects
Physics, Cosmic ray, Astrophysics, Fluorescence spectroscopy
Published
2021

9. The status of the TALE surface detector array and TALE infill project

Author

Takashi Sako, Zach Zundel, Shigeharu Udo, Kenta Yashiro, Toru Nakamura, Kenichi Kadota, Il Hung Park, Min Hyo Kim, Ryo Nakamura, Tatsunobu Shibata, R. Sahara, Noemie Globus, Elliott Barcikowski, S. Kawakami, Akitoshi Oshima, Dmitri Ivanov, Grigory Rubtsov, Fugo Yoshida, Shunsuke Ozawa, Keijiro Mukai, Charlie Jui, BayarJon Paul Lubsandorzhiev, Yusuke Kimura, Fumio Kakimoto, Mayuko Minamino, Saori Kasami, G. Furlich, Takaaki Ishii, Norimichi Shibata, Fumiya Shibata, Hiroyuki Sagawa, Y. Omura, D. C. Rodriguez, Matt Potts, Aoi Iwasaki, HangBae Kim, Koichi Tanaka, Jon Paul Lundquist, Ryota Fukushima, Monica Allen, Bokkyun Shin, Yuya Oku, Ryuji Takeishi, Vladim Kuzmin, Oleg Kalashev, Telescope Array, M. Yamamoto, Youngjoon Kwon, Arata Nakazawa, John Belz, Kei Nakai, Yukio Uchihori, Stanton Thomas, Yasunori Saito, Maxim Pshirkov, Michiyuki Chikawa, Ben Stokes, Ryota Onogi, J. H. Kim, Hirotaka Ito, R. Mayta, Ryuhei Arimura, Shoichi Kishigami, Pierre Sokolsky, Federico R. Urban, Nobuyuki Sakurai, Hideki Tanaka, Kinya Hibino, Yoshiki Tsunesada, Shigehiro Nagataki, Yana Zhezher, Masaomi Ono, Sang Woo Kim, Sergey Troitsky, Hisono Tokuno, Taka Tomida, J. Remington, Rasha Abbasi, M. Ohnishi, Taichi Inadomi, Naoaki Hayashida, Hideaki Shimodaira, Hyoming Jeong, Isaac Myers, Koki Sato, Ryo Higuchi, Toshihiro Fujii, Tomoyuki Nakamura, Hiroyuki Matsumiya, Ryota Fujiwara, Takafumi Uehama, ByongGu Cheon, Yuto Kubota, Eiji Kido, Naoto Sakaki, Kazuhiro Machida, Kengo Sano, Katsuaki Kasahara, K. Yamazaki, Katsumasa Kawata, Tareq Abu-Zayyad, Tsubasa Yoshioka, Takeshi Okuda, Igor Tkachev, Y. Nakamura, Kohei Yada, Naohiro Sone, Mikhail Kuznetsov, Hideyuki Ohoka, H. Oda, Akimichi Taketa, Eiji Nishio, Ivan Kharuk, Hideyuki Kawai, Yuma Shibasaki, Jyunsei Chiba, Dongsu Ryu, Hirokazu Iwakura, Y. Takagi, Douglas Bergman, Shinnosuke Kurisu, Jeremy Smith, Toshio Matsuyama, K. H. Lee, Jihee Kim, Gordon Thomson, Tom Stroman, Robert Cady, Manobu Tanaka, Keitaro Fujita, Daiki Shinto, Priti Shah, Masahiro Takeda, Ken Honda, John Matthews, J. Yang, Koichi Sekino, P. Tinyakov, Y. Takahashi, Mai Takamura, Daisuke Ikeda, Tiffany Wong, Masaki Fukushima, Yuta Tanoue, Motoki Hayashi, Heungsu Shin, Kozo Fujisue, Yuto Arai, Ryosuke Tsuda, Soomin Jeong, Shingo Kawana, William Hanlon, T. Seki, Toshiyuki Nonaka, Ricardo Gonzalez, Naoya Inoue, Yuichiro Tameda, Masato Takita, Samuel Blake, and Shoichi Ogio

Subjects
Surface (mathematics), Optics, business.industry, Infill, Detector array, business, Geology
Published
2021

10. Current status and prospects of surface detector of the TAx4 experiment

Author

Katsumasa Kawata, Grigory Rubtsov, Tsubasa Yoshioka, Tatsunobu Shibata, Yuichiro Tameda, Kenta Yashiro, Akitoshi Oshima, Fugo Yoshida, Jyunsei Chiba, Ryosuke Tsuda, Soomin Jeong, M. Yamamoto, Ryo Nakamura, Shunsuke Ozawa, Dongsu Ryu, Takashi Sako, Shingo Kawana, Hirokazu Iwakura, Y. Takagi, ByongGu Cheon, T. Seki, Naoya Inoue, Yukio Uchihori, Hideaki Shimodaira, Hyoming Jeong, Hideki Tanaka, Aoi Iwasaki, John Matthews, Ryota Onogi, J. H. Kim, William Hanlon, Ryo Higuchi, Fumiya Shibata, J. Yang, Hisono Tokuno, Masato Takita, Akimichi Taketa, M. Ohnishi, Taichi Inadomi, Hideyuki Ohoka, Ryota Fujiwara, Youngjoon Kwon, John Belz, R. Mayta, Yuta Tanoue, Koki Sato, Eiji Nishio, Motoki Hayashi, Naoto Sakaki, Ryota Fukushima, Matt Potts, Ivan Kharuk, K. Yamazaki, Ben Stokes, Sergey Troitsky, Min Hyo Kim, Tareq Abu-Zayyad, Kengo Sano, Kozo Fujisue, Zach Zundel, Kinya Hibino, Saori Kasami, Toru Nakamura, R. Sahara, Taka Tomida, J. Remington, Federico R. Urban, Nobuyuki Sakurai, Takeshi Okuda, Igor Tkachev, Naohiro Sone, Samuel Blake, Shoichi Ogio, Kenichi Kadota, Il Hung Park, Hideyuki Kawai, Rasha Abbasi, Keitaro Fujita, Koichi Sekino, H. Oda, Mikhail Kuznetsov, Heungsu Shin, Shinnosuke Kurisu, Toshiyuki Nonaka, Ricardo Gonzalez, P. Tinyakov, S. Kawakami, Charlie Jui, Fumio Kakimoto, Yuto Arai, Naoaki Hayashida, Shigeharu Udo, Yuya Oku, Michiyuki Chikawa, Oleg Kalashev, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Y. Takahashi, Mai Takamura, Jeremy Smith, Ryuhei Arimura, Daiki Shinto, Monica Allen, Bokkyun Shin, Yuma Shibasaki, Priti Shah, Hiroyuki Sagawa, Masahiro Takeda, Vladim Kuzmin, Yoshiki Tsunesada, Daisuke Ikeda, Ken Honda, Toshio Matsuyama, Douglas Bergman, Tiffany Wong, Koichi Tanaka, Masaki Fukushima, Jon Paul Lundquist, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Yusuke Kimura, Manobu Tanaka, K. H. Lee, Jihee Kim, Maxim Pshirkov, Gordon Thomson, Toshihiro Fujii, Tom Stroman, Robert Cady, Yuto Kubota, Y. Nakamura, Kohei Yada, Pierre Sokolsky, Shigehiro Nagataki, Shoichi Kishigami, Yana Zhezher, Sang Woo Kim, Masaomi Ono, Telescope Array, Tomoyuki Nakamura, Stanton Thomas, Hiroyuki Matsumiya, Takafumi Uehama, Eiji Kido, Kazuhiro Machida, Yasunori Saito, Isaac Myers, Norimichi Shibata, Y. Omura, G. Furlich, Takaaki Ishii, D. C. Rodriguez, HangBae Kim, Arata Nakazawa, Kei Nakai, Hirotaka Ito, Ryuji Takeishi, and Katsuaki Kasahara

Subjects
Physics, Surface (mathematics), Optics, business.industry, Detector, Current (fluid), business
Published
2021

11. Cosmic Ray Composition in the Second Knee Region as Measured by the TALE Hybrid Detector

Author

ByongGu Cheon, Hiroyuki Matsumiya, Charlie Jui, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Takashi Sako, Ivan Kharuk, Takeshi Okuda, Igor Tkachev, Takafumi Uehama, Hideyuki Ohoka, Daiki Shinto, Priti Shah, Isaac Myers, K. H. Lee, Jihee Kim, Telescope Array, Naohiro Sone, Eiji Kido, Fugo Yoshida, Kazuhiro Machida, Aoi Iwasaki, Hideaki Shimodaira, Hyoming Jeong, Masahiro Takeda, Ken Honda, H. Oda, Zach Zundel, Yuta Tanoue, Fumiya Shibata, Gordon Thomson, Tom Stroman, Robert Cady, Shoichi Kishigami, Ryo Higuchi, Youngjoon Kwon, Sergey Troitsky, Motoki Hayashi, Masaomi Ono, John Belz, Kozo Fujisue, Stanton Thomas, Kinya Hibino, Elliott Barcikowski, Matt Potts, Taka Tomida, Dmitri Ivanov, John Matthews, Samuel Blake, Ryuhei Arimura, J. Remington, M. Ohnishi, Taichi Inadomi, Koichi Sekino, Shoichi Ogio, Keijiro Mukai, J. Yang, P. Tinyakov, K. Yamazaki, G. Furlich, Takaaki Ishii, Pierre Sokolsky, Norimichi Shibata, Yuichiro Tameda, Shingo Kawana, Yusuke Kimura, Y. Omura, Tareq Abu-Zayyad, Yoshiki Tsunesada, Ryuji Takeishi, Daisuke Ikeda, Y. Takahashi, Mai Takamura, Koki Sato, Shigehiro Nagataki, Yana Zhezher, Jyunsei Chiba, Dongsu Ryu, William Hanlon, Hiroyuki Sagawa, Shigeharu Udo, Sang Woo Kim, D. C. Rodriguez, Kengo Sano, Tatsunobu Shibata, Tiffany Wong, Hirokazu Iwakura, Y. Takagi, HangBae Kim, Toshihiro Fujii, Mikhail Kuznetsov, Masato Takita, Keitaro Fujita, Yasunori Saito, Masaki Fukushima, Akitoshi Oshima, Yuto Kubota, Vladim Kuzmin, Kenta Yashiro, Grigory Rubtsov, Shunsuke Ozawa, Tomoyuki Nakamura, Manobu Tanaka, Y. Nakamura, Kohei Yada, Koichi Tanaka, Ryosuke Tsuda, Fumio Kakimoto, Ben Stokes, Ryota Fukushima, Naoaki Hayashida, M. Yamamoto, Monica Allen, Bokkyun Shin, Soomin Jeong, Michiyuki Chikawa, R. Sahara, Jon Paul Lundquist, Federico R. Urban, Arata Nakazawa, Nobuyuki Sakurai, Toshiyuki Nonaka, Yukio Uchihori, Kei Nakai, Ryota Onogi, J. H. Kim, Ricardo Gonzalez, Maxim Pshirkov, Toshio Matsuyama, T. Seki, Naoya Inoue, R. Mayta, Hirotaka Ito, Min Hyo Kim, S. Kawakami, Heungsu Shin, Yuto Arai, Saori Kasami, Ryo Nakamura, Hideki Tanaka, Hisono Tokuno, Yuma Shibasaki, Douglas Bergman, Akimichi Taketa, Eiji Nishio, Yuya Oku, Hideyuki Kawai, Shinnosuke Kurisu, Oleg Kalashev, Jeremy Smith, Toru Nakamura, Kenichi Kadota, Il Hung Park, Ryota Fujiwara, Naoto Sakaki, Katsuaki Kasahara, Katsumasa Kawata, Tsubasa Yoshioka, and Rasha Abbasi

Subjects
Physics, Detector, Cosmic ray, Knee region, Astrophysics, Composition (combinatorics)
Published
2021

12. Effects of Galactic magnetic field on the UHECR anisotropy studies

Author

Tomoyuki Nakamura, Sergey Troitsky, Taka Tomida, M. Yamamoto, Fugo Yoshida, J. Remington, M. Ohnishi, Taichi Inadomi, Elliott Barcikowski, Stanton Thomas, Pierre Sokolsky, Yuichiro Tameda, Hideaki Shimodaira, Hyoming Jeong, Dmitri Ivanov, R. Sahara, Shigehiro Nagataki, Yana Zhezher, Ryota Fujiwara, Sang Woo Kim, Yukio Uchihori, Manobu Tanaka, Ryo Higuchi, Ivan Kharuk, Keijiro Mukai, Koki Sato, ByongGu Cheon, Norimichi Shibata, Yuma Shibasaki, Ryota Onogi, J. H. Kim, Y. Omura, Keitaro Fujita, Naoto Sakaki, Aoi Iwasaki, Yusuke Kimura, K. H. Lee, Jihee Kim, Hideyuki Ohoka, R. Mayta, Kengo Sano, Gordon Thomson, K. Yamazaki, Tom Stroman, Robert Cady, Tareq Abu-Zayyad, Kinya Hibino, Toru Nakamura, Yasunori Saito, Douglas Bergman, Naoaki Hayashida, Takeshi Okuda, Igor Tkachev, Mikhail Kuznetsov, Min Hyo Kim, Kenichi Kadota, Michiyuki Chikawa, Rasha Abbasi, Ryosuke Tsuda, Yuta Tanoue, Naohiro Sone, Il Hung Park, Masato Takita, Soomin Jeong, John N. Matthews, Katsuaki Kasahara, H. Oda, Saori Kasami, Shinnosuke Kurisu, Motoki Hayashi, Takashi Sako, Katsumasa Kawata, Youngjoon Kwon, John Belz, Ben Stokes, J. P. Lundquist, Arata Nakazawa, S. Kawakami, Monica Allen, Bokkyun Shin, T. Seki, Yuto Kubota, Kozo Fujisue, Federico R. Urban, Hiroyuki Matsumiya, Nobuyuki Sakurai, Tsubasa Yoshioka, Naoya Inoue, Vladim Kuzmin, J. Yang, Shigeharu Udo, Kei Nakai, Kenta Yashiro, T. Fujii, Hiroyuki Sagawa, Maxim Pshirkov, Takafumi Uehama, Shingo Kawana, Kazumasa Kawata, Toshio Matsuyama, Y. Nakamura, Jeremy Smith, Yuya Oku, Kohei Yada, Koichi Tanaka, Akimichi Taketa, Koichi Sekino, Hideki Tanaka, Oleg Kalashev, Eiji Kido, Tatsunobu Shibata, William Hanlon, Daiki Shinto, Eiji Nishio, Kazuhiro Machida, Jyunsei Chiba, Dongsu Ryu, Telescope Array, Zach Zundel, Akitoshi Oshima, Priti Shah, P. Tinyakov, Heungsu Shin, Fumio Kakimoto, Shunsuke Ozawa, Isaac Myers, Ryuhei Arimura, Hisono Tokuno, Masahiro Takeda, Ken Honda, Ryuji Takeishi, Yoshiki Tsunesada, Daisuke Ikeda, Hideyuki Kawai, Hirokazu Iwakura, Y. Takagi, Tiffany Wong, Samuel Blake, Masaki Fukushima, Shoichi Ogio, Yuto Arai, Toshiyuki Nonaka, Shoichi Kishigami, Ricardo Gonzalez, G. Furlich, Takaaki Ishii, Y. Takahashi, Mai Takamura, Masaomi Ono, D. C. Rodriguez, HangBae Kim, Grigory Rubtsov, Ryota Fukushima, Hirotaka Ito, Ryo Nakamura, Charlie Jui, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, Fumiya Shibata, and Matt Potts

Subjects
Physics, Astrophysics, Anisotropy, Magnetic field
Published
2021

13. Mass composition of Telescope Array's surface detectors events using deep learning

Author

Hideaki Shimodaira, Hyoming Jeong, Hiroyuki Sagawa, Fumiya Shibata, Ryuji Takeishi, Ryo Higuchi, Youngjoon Kwon, John Belz, Hideyuki Ohoka, Ryo Nakamura, Rasha Abbasi, Daiki Shinto, Ryuhei Arimura, Koichi Tanaka, Yoshiki Tsunesada, Daisuke Ikeda, Michiyuki Chikawa, Tiffany Wong, Masaki Fukushima, Matt Potts, Yuma Shibasaki, Priti Shah, Jon Paul Lundquist, K. Yamazaki, Pierre Sokolsky, Katsuaki Kasahara, Katsumasa Kawata, Tareq Abu-Zayyad, Fugo Yoshida, Masahiro Takeda, Takashi Sako, Ken Honda, Zach Zundel, Shigehiro Nagataki, Yana Zhezher, Ben Stokes, Tsubasa Yoshioka, Kenta Yashiro, Sergey Troitsky, R. Sahara, Douglas Bergman, Sang Woo Kim, Taka Tomida, Shingo Kawana, Charlie Jui, BayarJon Paul Lubsandorzhiev, J. Remington, Mayuko Minamino, Mikhail Kuznetsov, Min Hyo Kim, Shinnosuke Kurisu, William Hanlon, Ryota Fujiwara, Elliott Barcikowski, Dmitri Ivanov, Monica Allen, Naoto Sakaki, Tomoyuki Nakamura, G. Furlich, Takaaki Ishii, Federico R. Urban, Nobuyuki Sakurai, Saori Kasami, Keijiro Mukai, Bokkyun Shin, Toshio Matsuyama, K. H. Lee, Jihee Kim, Gordon Thomson, Ryota Fukushima, Samuel Blake, Shoichi Ogio, Hirotaka Ito, Yusuke Kimura, Tom Stroman, Robert Cady, Naoaki Hayashida, Norimichi Shibata, Y. Omura, S. Kawakami, D. C. Rodriguez, Keitaro Fujita, Jeremy Smith, HangBae Kim, Takeshi Okuda, Igor Tkachev, Akimichi Taketa, Hideki Tanaka, Stanton Thomas, Naohiro Sone, Isaac Myers, Eiji Nishio, Yuya Oku, Aoi Iwasaki, Oleg Kalashev, Hiroyuki Matsumiya, Toshihiro Fujii, Hisono Tokuno, H. Oda, Jyunsei Chiba, Grigory Rubtsov, Dongsu Ryu, Manobu Tanaka, Yuto Kubota, Koichi Sekino, Takafumi Uehama, Maxim Pshirkov, Hideyuki Kawai, P. Tinyakov, Toru Nakamura, Kenichi Kadota, M. Ohnishi, Y. Nakamura, Il Hung Park, Kohei Yada, Hirokazu Iwakura, Taichi Inadomi, Y. Takagi, Y. Takahashi, Mai Takamura, Eiji Kido, Kazuhiro Machida, Arata Nakazawa, Koki Sato, John Matthews, Toshiyuki Nonaka, Kei Nakai, Ivan Kharuk, J. Yang, Ricardo Gonzalez, Kengo Sano, Yasunori Saito, Yuta Tanoue, Fumio Kakimoto, Motoki Hayashi, Yuichiro Tameda, Kozo Fujisue, Shoichi Kishigami, Masaomi Ono, Masato Takita, Telescope Array, Shigeharu Udo, Kinya Hibino, M. Yamamoto, Yukio Uchihori, Ryota Onogi, J. H. Kim, R. Mayta, Vladim Kuzmin, Ryosuke Tsuda, Soomin Jeong, T. Seki, Naoya Inoue, Heungsu Shin, Yuto Arai, Tatsunobu Shibata, Akitoshi Oshima, Shunsuke Ozawa, and ByongGu Cheon

Subjects
Surface (mathematics), Telescope, Physics, Optics, business.industry, law, Deep learning, Detector, Artificial intelligence, Mass composition, business, law.invention
Published
2021

14. FOV direction and image size calibration of Fluorescence Detector using light source on UAV

Author

Telescope Array, Yasunori Saito, Shoichi Kishigami, Hideaki Shimodaira, Hyoming Jeong, Masaomi Ono, Ryo Higuchi, Ryuhei Arimura, Fugo Yoshida, Ryo Nakamura, Tomoyuki Nakamura, Charlie Jui, Min Hyo Kim, M. Ohnishi, Taichi Inadomi, Hideki Tanaka, Hisono Tokuno, BayarJon Paul Lubsandorzhiev, John Matthews, Yoshiki Tsunesada, Heungsu Shin, Manobu Tanaka, Koki Sato, Mayuko Minamino, J. Yang, Daisuke Ikeda, K. Yamazaki, Tareq Abu-Zayyad, M. Yamamoto, S. Kawakami, Kengo Sano, Sergey Troitsky, Fumio Kakimoto, Yuto Arai, Tiffany Wong, Taka Tomida, J. Remington, Koichi Sekino, Stanton Thomas, Kenta Yashiro, Ryosuke Tsuda, Saori Kasami, Monica Allen, Yukio Uchihori, Masaki Fukushima, Fumiya Shibata, Ben Stokes, Toshio Matsuyama, P. Tinyakov, Mikhail Kuznetsov, Soomin Jeong, Bokkyun Shin, Pierre Sokolsky, Norimichi Shibata, Hiroyuki Sagawa, K. H. Lee, Jihee Kim, Y. Omura, Ryota Onogi, J. H. Kim, Gordon Thomson, G. Furlich, Takaaki Ishii, Tom Stroman, Robert Cady, Y. Takahashi, Mai Takamura, ByongGu Cheon, Matt Potts, Shigehiro Nagataki, Yana Zhezher, Keitaro Fujita, Federico R. Urban, Nobuyuki Sakurai, Koichi Tanaka, Naoaki Hayashida, T. Seki, Naoya Inoue, R. Mayta, Jon Paul Lundquist, Sang Woo Kim, Hiroyuki Matsumiya, Yuta Tanoue, Yuichiro Tameda, Kinya Hibino, Motoki Hayashi, Takafumi Uehama, D. C. Rodriguez, Eiji Kido, Maxim Pshirkov, Kozo Fujisue, Takeshi Okuda, Kazuhiro Machida, HangBae Kim, Hideyuki Ohoka, Igor Tkachev, Naohiro Sone, Shigeharu Udo, Shinnosuke Kurisu, Grigory Rubtsov, Tatsunobu Shibata, H. Oda, Michiyuki Chikawa, Daiki Shinto, Arata Nakazawa, Kei Nakai, Akitoshi Oshima, Priti Shah, R. Sahara, Jeremy Smith, Akimichi Taketa, Eiji Nishio, Masahiro Takeda, Takashi Sako, Vladim Kuzmin, Ken Honda, Masato Takita, Shunsuke Ozawa, Isaac Myers, Hideyuki Kawai, Yuma Shibasaki, Douglas Bergman, Samuel Blake, Shoichi Ogio, Zach Zundel, Jyunsei Chiba, Dongsu Ryu, Hirokazu Iwakura, Y. Takagi, Ivan Kharuk, Toru Nakamura, Elliott Barcikowski, Kenichi Kadota, Dmitri Ivanov, Il Hung Park, Keijiro Mukai, Yusuke Kimura, Yuya Oku, Oleg Kalashev, Ryota Fukushima, Youngjoon Kwon, John Belz, Toshihiro Fujii, Yuto Kubota, Y. Nakamura, Kohei Yada, Hirotaka Ito, Rasha Abbasi, Aoi Iwasaki, Ryota Fujiwara, Naoto Sakaki, Katsuaki Kasahara, Katsumasa Kawata, Tsubasa Yoshioka, Ryuji Takeishi, Shingo Kawana, William Hanlon, Toshiyuki Nonaka, and Ricardo Gonzalez

Subjects
Physics, Light source, Optics, business.industry, Calibration, business, Image resolution, Fluorescence spectroscopy
Published
2021

15. UHECR mass composition from anisotropy of their arrival directions with the Telescope Array SD

Author

Katsuaki Kasahara, Ryota Fukushima, Takeshi Okuda, Igor Tkachev, Katsumasa Kawata, Daiki Shinto, Naohiro Sone, ByongGu Cheon, Shoichi Kishigami, Norimichi Shibata, Manobu Tanaka, Grigory Rubtsov, Ryuhei Arimura, M. Yamamoto, H. Oda, Masaomi Ono, Priti Shah, Y. Omura, Yoshiki Tsunesada, Tsubasa Yoshioka, Daisuke Ikeda, Masahiro Takeda, Tiffany Wong, Mikhail Kuznetsov, Ken Honda, K. H. Lee, Jihee Kim, Kenta Yashiro, Gordon Thomson, Hideyuki Ohoka, Yuichiro Tameda, Yukio Uchihori, Masaki Fukushima, Hiroyuki Sagawa, R. Sahara, Charlie Jui, Jyunsei Chiba, Dongsu Ryu, Tom Stroman, Fugo Yoshida, Robert Cady, Ryota Onogi, J. H. Kim, Shinnosuke Kurisu, Shingo Kawana, Ryota Fujiwara, BayarJon Paul Lubsandorzhiev, William Hanlon, Hirokazu Iwakura, Y. Takagi, R. Mayta, Hiroyuki Matsumiya, Koichi Tanaka, Mayuko Minamino, Vladim Kuzmin, Hideaki Shimodaira, Ivan Kharuk, Jon Paul Lundquist, Naoto Sakaki, Youngjoon Kwon, Kinya Hibino, John Belz, Ryo Nakamura, Hyoming Jeong, Michiyuki Chikawa, Keitaro Fujita, Takafumi Uehama, Saori Kasami, Fumiya Shibata, Ryo Higuchi, Yuya Oku, M. Ohnishi, Takashi Sako, Masato Takita, Eiji Kido, Toshiyuki Nonaka, Taichi Inadomi, Oleg Kalashev, Ryosuke Tsuda, Soomin Jeong, Ricardo Gonzalez, Rasha Abbasi, Kazuhiro Machida, Toshio Matsuyama, Min Hyo Kim, Matt Potts, Koki Sato, Kengo Sano, K. Yamazaki, Tareq Abu-Zayyad, Hideki Tanaka, Zach Zundel, S. Kawakami, Yasunori Saito, Peter Tinyakov, Samuel Blake, Shoichi Ogio, Shigeharu Udo, T. Seki, Toru Nakamura, Naoya Inoue, Jeremy Smith, John Matthews, J. Yang, Monica Allen, Kenichi Kadota, Hisono Tokuno, Yuta Tanoue, Akimichi Taketa, Bokkyun Shin, Eiji Nishio, Il Hung Park, Motoki Hayashi, Ben Stokes, Kozo Fujisue, Heungsu Shin, Federico R. Urban, Nobuyuki Sakurai, Hideyuki Kawai, Yuma Shibasaki, Koichi Sekino, Yuto Arai, Douglas Bergman, Tatsunobu Shibata, Y. Takahashi, Mai Takamura, Akitoshi Oshima, Shunsuke Ozawa, Maxim Pshirkov, Fumio Kakimoto, Sergey Troitsky, Taka Tomida, J. Remington, Naoaki Hayashida, Toshihiro Fujii, Yuto Kubota, Y. Nakamura, Kohei Yada, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Yusuke Kimura, Stanton Thomas, Aoi Iwasaki, Tomoyuki Nakamura, Ryuji Takeishi, Pierre Sokolsky, Shigehiro Nagataki, Yana Zhezher, Isaac Myers, Sang Woo Kim, Hirotaka Ito, G. Furlich, Takaaki Ishii, D. C. Rodriguez, HangBae Kim, Arata Nakazawa, and Kei Nakai

Subjects
Telescope, Physics, law, Astrophysics, Mass composition, Anisotropy, law.invention
Published
2021

16. Analysis of TAx4 hybrid trigger and events

Author

Ivan Kharuk, Yuma Shibasaki, Jyunsei Chiba, Dongsu Ryu, Aoi Iwasaki, Hirokazu Iwakura, Y. Takagi, K. H. Lee, Jihee Kim, Ryota Fukushima, Ryuhei Arimura, Shigeharu Udo, Fumiya Shibata, Gordon Thomson, Hideki Tanaka, Fugo Yoshida, Tom Stroman, Robert Cady, Yoshiki Tsunesada, Sergey Troitsky, Daisuke Ikeda, Douglas Bergman, Taka Tomida, J. Remington, Tiffany Wong, John Matthews, ByongGu Cheon, Hiroyuki Matsumiya, Ryo Nakamura, Ryuji Takeishi, Masaki Fukushima, Hisono Tokuno, Ryosuke Tsuda, Soomin Jeong, M. Yamamoto, J. Yang, Matt Potts, Pierre Sokolsky, Min Hyo Kim, Yukio Uchihori, Naoaki Hayashida, Takashi Sako, T. Seki, Shigehiro Nagataki, Yana Zhezher, Akimichi Taketa, Naoya Inoue, Tatsunobu Shibata, Daiki Shinto, Sang Woo Kim, Eiji Nishio, Ryota Onogi, J. H. Kim, Priti Shah, Takafumi Uehama, G. Furlich, Takaaki Ishii, Saori Kasami, Hideaki Shimodaira, Hyoming Jeong, Masahiro Takeda, Charlie Jui, Ken Honda, R. Mayta, S. Kawakami, Heungsu Shin, BayarJon Paul Lubsandorzhiev, Ryo Higuchi, Toru Nakamura, Yuta Tanoue, Mayuko Minamino, Kenichi Kadota, Zach Zundel, Akitoshi Oshima, Eiji Kido, Elliott Barcikowski, Shingo Kawana, Shoichi Kishigami, Yuto Arai, Keitaro Fujita, Motoki Hayashi, Yuichiro Tameda, Hideyuki Ohoka, Il Hung Park, Kinya Hibino, Hirotaka Ito, Toshio Matsuyama, Kazuhiro Machida, Hiroyuki Sagawa, Hideyuki Kawai, D. C. Rodriguez, Dmitri Ivanov, Vladim Kuzmin, William Hanlon, Stanton Thomas, HangBae Kim, Shinnosuke Kurisu, Kozo Fujisue, Keijiro Mukai, K. Yamazaki, Masaomi Ono, Michiyuki Chikawa, Tareq Abu-Zayyad, Yusuke Kimura, Yasunori Saito, Koichi Tanaka, Grigory Rubtsov, Tomoyuki Nakamura, Jon Paul Lundquist, Koichi Sekino, Shunsuke Ozawa, Yuya Oku, P. Tinyakov, Isaac Myers, Oleg Kalashev, Masato Takita, Y. Takahashi, Mai Takamura, R. Sahara, Telescope Array, S. W. Kim, Manobu Tanaka, Toshiyuki Nonaka, Jeremy Smith, Norimichi Shibata, Y. Omura, Mikhail Kuznetsov, Ricardo Gonzalez, Ben Stokes, Samuel Blake, Toshihiro Fujii, Monica Allen, Shoichi Ogio, Yuto Kubota, Bokkyun Shin, Y. Nakamura, Kohei Yada, Federico R. Urban, Arata Nakazawa, Nobuyuki Sakurai, Kei Nakai, Youngjoon Kwon, John Belz, Rasha Abbasi, M. Ohnishi, Taichi Inadomi, Koki Sato, Fumio Kakimoto, Ryota Fujiwara, Kengo Sano, Naoto Sakaki, Katsuaki Kasahara, Katsumasa Kawata, Kenta Yashiro, Tsubasa Yoshioka, Maxim Pshirkov, Takeshi Okuda, Igor Tkachev, Naohiro Sone, and H. Oda

Published
2021

17. Reconstruction of air shower events measured by the surface detectors of the TAx4 experiment

Author

Fugo Yoshida, Fumio Kakimoto, Norimichi Shibata, Kinya Hibino, John Matthews, J. Yang, Y. Omura, Ivan Kharuk, Toshihiro Fujii, Hiroyuki Sagawa, Yuichiro Tameda, Hideki Tanaka, Yuma Shibasaki, Yuto Kubota, Hisono Tokuno, Mikhail Kuznetsov, Katsuaki Kasahara, Koichi Tanaka, Jon Paul Lundquist, M. Yamamoto, Katsumasa Kawata, Monica Allen, Bokkyun Shin, Hiroyuki Matsumiya, Tsubasa Yoshioka, Takafumi Uehama, Y. Nakamura, Kohei Yada, Yukio Uchihori, Hyomin Jeong, Tatsunobu Shibata, Ryota Onogi, J. H. Kim, Michiyuki Chikawa, ByongGu Cheon, Hideaki Shimodaira, Hyoming Jeong, Eiji Kido, M. Ohnishi, Taichi Inadomi, Kazuhiro Machida, Ryo Higuchi, Charlie Jui, Akitoshi Oshima, R. Mayta, Douglas Bergman, Keitaro Fujita, Elliott Barcikowski, Maxim Pshirkov, Manobu Tanaka, Pierre Sokolsky, Vladim Kuzmin, BayarJon Paul Lubsandorzhiev, Shunsuke Ozawa, Min Hyo Kim, Dmitri Ivanov, Koki Sato, Mayuko Minamino, Saori Kasami, Shigehiro Nagataki, Hideyuki Ohoka, Takashi Sako, K. Yamazaki, Tareq Abu-Zayyad, Keijiro Mukai, Youngjoon Kwon, Yasunori Saito, John Belz, Yana Zhezher, Sang Woo Kim, S. Kawakami, Jyunsei Chiba, Ryo Nakamura, Masato Takita, Yusuke Kimura, Daiki Shinto, Dongsu Ryu, Yuta Tanoue, Fumiya Shibata, Yuya Oku, K. H. Lee, Jihee Kim, Kengo Sano, Priti Shah, Hirokazu Iwakura, Y. Takagi, Motoki Hayashi, Oleg Kalashev, Kenta Yashiro, Zach Zundel, Masahiro Takeda, Ken Honda, Ben Stokes, Matt Potts, Kozo Fujisue, Stanton Thomas, Gordon Thomson, Toshiyuki Nonaka, Ryuhei Arimura, Ryosuke Tsuda, Akimichi Taketa, Tom Stroman, Robert Cady, Soomin Jeong, Ricardo Gonzalez, Federico R. Urban, Nobuyuki Sakurai, Koichi Sekino, Yoshiki Tsunesada, P. Tinyakov, Daisuke Ikeda, Eiji Nishio, T. Seki, Tomoyuki Nakamura, Ryota Fukushima, Naoya Inoue, Tiffany Wong, Toru Nakamura, Kenichi Kadota, Y. Takahashi, Mai Takamura, Masaki Fukushima, Takeshi Okuda, Igor Tkachev, Shingo Kawana, Naohiro Sone, Heungsu Shin, William Hanlon, H. Oda, Il Hung Park, G. Furlich, Takaaki Ishii, Hideyuki Kawai, Shinnosuke Kurisu, Yuto Arai, Toshio Matsuyama, Samuel Blake, Shoichi Ogio, Jeremy Smith, D. C. Rodriguez, Aoi Iwasaki, HangBae Kim, Ryota Fujiwara, Naoto Sakaki, Grigory Rubtsov, Rasha Abbasi, R. Sahara, Arata Nakazawa, Kei Nakai, Telescope Array, Isaac Myers, Hirotaka Ito, Ryuji Takeishi, Shoichi Kishigami, Masaomi Ono, Sergey Troitsky, Taka Tomida, J. Remington, Naoaki Hayashida, and Shigeharu Udo

Subjects
Surface (mathematics), Materials science, Optics, Air shower, business.industry, Detector, business
Published
2021

19. Observations of the Origin of Downward Terrestrial Gamma‐Ray Flashes

Author

Hideaki Shimodaira, Hyoming Jeong, Hidemi Ito, N. Inoue, Takashi Sako, D. Ikeda, M. Ohnishi, Taichi Inadomi, Tareq Abu-Zayyad, Takayuki Tomida, Toru Nakamura, Federico R. Urban, Yuya Oku, Oleg Kalashev, Fumiya Shibata, Kenichi Kadota, S. Udo, C. C. H. Jui, Pierre Sokolsky, M. Takeda, Zach Zundel, Shigehiro Nagataki, Sergey Troitsky, Toshiyuki Nonaka, M. Byrne, Kengo Sano, R. Sahara, Matt Potts, K. H. Lee, Yasunori Saito, Hiroyuki Sagawa, Ben Stokes, T.-A. Shibata, Heungsu Shin, S. B. Thomas, H. Tokuno, H. Yamaoka, Yuta Tanoue, Motoki Hayashi, J. P. Lundquist, Gordon Thomson, Tom Stroman, Robert Cady, Kiyoshi Tanaka, Michiyuki Chikawa, J. Remington, Y. Hayashi, G. Furlich, Takaaki Ishii, Igor Tkachev, Naohiro Sone, Y. Zhezher, Yoshihiko Nakamura, Akimichi Taketa, J. D. Smith, T. Fujii, Keitaro Fujita, Y. J. Kwon, Hideyuki Ohoka, Vladim Kuzmin, H. Oda, K. Kawata, D. C. Rodriguez, S. Ozawa, BayarJon Paul Lubsandorzhiev, S. Jeong, B. K. Shin, D. Rodeheffer, Naoaki Hayashida, B. G. Cheon, T. Matuyama, Kenta Yashiro, Mayuko Minamino, M. Allen, Tiffany Wong, R. Takeishi, Yuichiro Tameda, Isaac Myers, K. Honda, Ryota Fujiwara, John N. Matthews, John Belz, Elliott Barcikowski, K. Kasahara, Masaki Fukushima, Akitoshi Oshima, Fumio Kakimoto, Dmitri Ivanov, Naoto Sakaki, Paul R. Krehbiel, M. Yamamoto, Y. Takahashi, Keijiro Mukai, Masaomi Ono, Masato Takita, M. Wallace, K. Yamazaki, H. Kawai, Masaaki Tanaka, Nobuyuki Sakurai, S. Kawakami, Hiroyuki Matsumiya, Saori Kasami, A. Di Matteo, T. Seki, Takafumi Uehama, Y. Tsunesada, Maxim Pshirkov, R. Mayta, R. LeVon, Hongsu Kim, Y. Uchihori, Eiji Kido, Kei Nakai, M. V. Kuznetsov, Kazuhiro Machida, K. Sekino, William Hanlon, T. Okuda, Inkyu Park, Grigory Rubtsov, William Rison, D. R. Bergman, R. U. Abbasi, Peter Tinyakov, Samuel Blake, Shoichi Ogio, J. H. Kim, Y. Omura, Dongsu Ryu, Mark A. Stanley, Hirokazu Iwakura, Y. Takagi, Ryo Nakamura, Kazuo Saito, H. Yoshii, M. Yosei, and K. Hibino

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Atmospheric Science, 010504 meteorology & atmospheric sciences, Conjunction (astronomy), Gamma ray, FOS: Physical sciences, Astrophysics, Electron, Radio atmospheric, 01 natural sciences, Lightning, High Energy Physics - Experiment, Physics - Atmospheric and Oceanic Physics, High Energy Physics - Experiment (hep-ex), Geophysics, Space and Planetary Science, Electric field, Atmospheric and Oceanic Physics (physics.ao-ph), Earth and Planetary Sciences (miscellaneous), Atmospheric electricity, Astrophysics - High Energy Astrophysical Phenomena, Cosmic-ray observatory, 0105 earth and related environmental sciences
Abstract

In this paper we report the first close, high-resolution observations of downward-directed terrestrial gamma-ray flashes (TGFs) detected by the large-area Telescope Array cosmic ray observatory, obtained in conjunction with broadband VHF interferometer and fast electric field change measurements of the parent discharge. The results show that the TGFs occur during strong initial breakdown pulses (IBPs) in the first few milliseconds of negative cloud-to-ground and low-altitude intracloud flashes, and that the IBPs are produced by a newly-identified streamer-based discharge process called fast negative breakdown. The observations indicate the relativistic runaway electron avalanches (RREAs) responsible for producing the TGFs are initiated by embedded spark-like transient conducting events (TCEs) within the fast streamer system, and potentially also by individual fast streamers themselves. The TCEs are inferred to be the cause of impulsive sub-pulses that are characteristic features of classic IBP sferics. Additional development of the avalanches would be facilitated by the enhanced electric field ahead of the advancing front of the fast negative breakdown. In addition to showing the nature of IBPs and their enigmatic sub-pulses, the observations also provide a possible explanation for the unsolved question of how the streamer to leader transition occurs during the initial negative breakdown, namely as a result of strong currents flowing in the final stage of successive IBPs, extending backward through both the IBP itself and the negative streamer breakdown preceding the IBP., Comment: Typo fixed and reference added. Manuscript is 36 pages. Supplemental Information is 42 pages. This paper is to be published in the Journal of Geophysical Research: Atmospheres. Online data repository: Open Science Framework DOI: 10.17605/OSF.IO/Z3XDA

Published
2020

20. Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment

Author

Takashi Sako, Hideaki Shimodaira, Hyoming Jeong, Ryo Higuchi, Inkyu Park, Kenta Yashiro, R. U. Abbasi, Tareq Abu-Zayyad, R. Azuma, Fumiya Shibata, F. Kakimoto, R. Ishimori, Daisuke Ikeda, K. Yamazaki, H. Kawai, Tiffany Wong, R. Takeishi, Masaki Fukushima, Maxim Pshirkov, Hongsu Kim, B. K. Shin, Hideki Tanaka, Toshiyuki Fujii, B. G. Cheon, T. Seki, John Belz, K. Kawata, BayarJon Paul Lubsandorzhiev, Akimichi Taketa, Min Hyo Kim, G. Furlich, Takaaki Ishii, Mayuko Minamino, K. Honda, Takayuki Tomida, Seok Ho Jeong, K. H. Lee, Yuta Tanoue, Masaaki Tanaka, D. C. Rodriguez, T.-A. Shibata, S. Kawakami, Motoki Hayashi, Zach Zundel, Peter Tinyakov, Samuel Blake, Gordon Thomson, Ben Stokes, Tom Stroman, Robert Cady, J. P. Lundquist, Shoichi Ogio, Kozo Fujisue, Hiroyuki Sagawa, M. Yamamoto, M. Yosei, Hidemi Ito, Grigory Rubtsov, Koichi Sekino, Kiyoshi Tanaka, D. R. Bergman, T. Suzawa, Y. Zhezher, Heungsu Shin, Isaac Myers, Katsuaki Kasahara, Y. Takahashi, Mai Takamura, Nobuyuki Sakurai, Yuya Oku, Oleg Kalashev, K. Hibino, Shoichi Kishigami, M. Allen, Sergey Troitsky, Toru Nakamura, Kenichi Kadota, T. Matsuyama, S. Ozawa, Masaomi Ono, Toshiyuki Nonaka, Y. Uchihori, Kei Nakai, Ryota Onogi, A. Di Matteo, J. Remington, Hideyuki Ohoka, R. Mayta, Vladim Kuzmin, Ryota Fujiwara, Keitaro Fujita, Saori Kasami, Shingo Kawana, Naoto Sakaki, Naoaki Hayashida, Yoshihiko Nakamura, William Hanlon, Priti Shah, T. Okuda, J. Yang, Masato Takita, R. Sahara, Pierre Sokolsky, M. Takeda, Shigehiro Nagataki, M. Abe, Akitoshi Oshima, Y. Tsunesada, H. Tokuno, Younghoon Kwon, J. D. Smith, J. H. Kim, Elliott Barcikowski, Dmitri Ivanov, Keijiro Mukai, Jyunsei Chiba, Dongsu Ryu, Hirokazu Iwakura, Y. Takagi, Kohei Yada, Y. Omura, Igor Tkachev, Naohiro Sone, H. Oda, N. Inoue, M. Ohnishi, Taichi Inadomi, Federico R. Urban, S. Udo, C. C. H. Jui, Kengo Sano, S. B. Thomas, Yasunori Saito, Yuichiro Tameda, John N. Matthews, S. W. Kim, Hiroyuki Matsumiya, M. Chikawa, Takafumi Uehama, Eiji Kido, M. V. Kuznetsov, Kazuhiro Machida, and Ryo Nakamura

Subjects
Physics, Pierre Auger Observatory, High Energy Astrophysical Phenomena (astro-ph.HE), 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, 01 natural sciences, Auger, Computational physics, law.invention, Telescope, Dipole, Amplitude, Space and Planetary Science, law, 0103 physical sciences, Ultra-high-energy cosmic ray, Astrophysics - High Energy Astrophysical Phenomena, Anisotropy, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences
Abstract

Motivated by the detection of a significant dipole structure in the arrival directions of ultrahigh-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 years of TA data, a dipole structure in a projection of the right ascension is fitted with an amplitude of 3.3+- 1.9% and a phase of 131 +- 33 degrees. The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible with both an isotropic distribution and the dipole structure reported by Auger., Comment: 6 pages, 3 figures, 1 table, Proofed title. Added journal reference and DOI

Published
2020
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21. Long distance network link for TAx4 expansion

Author

Stan B. Thomas, Toshiyuki Nonaka, Takeshi Okuda, Naoto Sakaki, Hiroyuki Sagawaa, Eiji Kido, Kohei Yada, John Matthews, Robert Cady, Ryota Fujiwara, and Shoichi Ogio

Subjects
Computer science, business.industry, Attenuation, Detector, Elevation, Measure (physics), Electrical engineering, Terrain, Power (physics), law.invention, Telescope, Air shower, law, business
Abstract

As a high-energy expansion of existing Telescope Array (TA) experiment, TAx4 SDs have been deployed and operated from Apr.2019. Network communication for inter-site and each detector also have been expanded to longer distance. Communication towers are located in off-grid. Those are operated by solar panel and batteries. In this report we describe hardware configuration and installation as well as operation status after the installation. We measure reception signals at communication towers and each detector sites. The reception depends on condition of terrain. There are several models and tools those are used for predicting received power considering elevation model. For future ground experiment of air shower observation, it is useful if attenuation of signal strength and communication quality could be estimated quantitatively. In this report, we present observed signal strength and its comparison with available attenuation models also.

Published
2019

22. Search for Ultra-High-Energy Neutrinos with the Telescope Array Surface Detector

Author

Koichi Sekino, Y. Takahashi, Mai Takamura, S. Kitamura, Hidemi Ito, K. Martens, Yuta Tanoue, Motoki Hayashi, J. P. Lundquist, K. Tsutsumi, John Belz, Heungsu Shin, Vladim Kuzmin, Takashi Sako, Toru Nakamura, Inkyu Park, Kenichi Kadota, Yana Zhezher, Hiroyuki Sagawa, D. R. Bergman, Maxim Pshirkov, Charlie Jui, BayarJon Paul Lubsandorzhiev, Mayuko Minamino, K. Yamazaki, M. Abe, K. H. Lee, K. Honda, Daisuke Ikeda, S. R. Stratton, Yasunori Kitamura, T.-A. Shibata, Gordon Thomson, Toshiyuki Fujii, Ryo Nakamura, Tom Stroman, Robert Cady, Masaaki Tanaka, Fumiya Shibata, M. Yamamoto, Nobuyuki Sakurai, Tiffany Wong, R. Takeishi, L. M. Scott, Hongsu Kim, Y. Hayashi, R. Ishimori, Masaki Fukushima, Kazuo Saito, Ben Stokes, N. Inoue, M. Ohnishi, Y. J. Kwon, Akimichi Taketa, Eiji Kido, B. G. Cheon, H. Kawai, K. Kawata, Federico R. Urban, M. V. Kuznetsov, Ryota Onogi, Hideyuki Ohoka, Pierre Sokolsky, A. Di Matteo, H. Yoshii, S. Udo, Kazuhiro Machida, Hideaki Shimodaira, Hyoming Jeong, M. Takeda, Shigehiro Nagataki, R. Mayta, T. Seki, Seok Ho Jeong, S. B. Thomas, Peter Tinyakov, Samuel Blake, Oleg Kalashev, Shoichi Ogio, Priti Shah, Igor Tkachev, Zach Zundel, S. Kawakami, Fumio Kakimoto, Tareq Abu-Zayyad, K. Nagasawa, H. Oda, H. Tokuno, R. Azuma, Toshiyuki Nonaka, K. Hibino, Kenta Yashiro, Akitoshi Oshima, Y. Tsunesada, Keitaro Fujita, B. K. Shin, H. Yamaoka, Michiyuki Chikawa, Masato Takita, J. D. Smith, Sergey Troitsky, Y. Omura, J. Remington, J. H. Kim, Elliott Barcikowski, Dmitri Ivanov, Jyunsei Chiba, Keijiro Mukai, Naoaki Hayashida, Shingo Kawana, Dongsu Ryu, Y. Takagi, Yasunori Saito, William Hanlon, T. Okuda, J. Yang, Yuichiro Tameda, John N. Matthews, Kohei Yada, Hideki Tanaka, Takayuki Tomida, K. Kasahara, Shoichi Kishigami, Kiyoshi Tanaka, Grigory Rubtsov, M. Allen, Masaomi Ono, R. Sahara, Ryota Fujiwara, Naoto Sakaki, Y. Uchihori, Kei Nakai, Rasha Abbasi, T. Matsuyama, S. Ozawa, T. Suzawa, J. Ogura, Isaac Myers, G. Furlich, Takaaki Ishii, and D. C. Rodriguez

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, FOS: Physical sciences, General Physics and Astronomy, Flux, Observable, Cosmic ray, 01 natural sciences, law.invention, Telescope, Optics, Distribution function, law, 0103 physical sciences, Alternating decision tree, High Energy Physics::Experiment, Neutrino, 010306 general physics, business, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present an upper limit on the flux of ultra-high-energy down-going neutrinos for $E > 10^{18}\ \mbox{eV}$ derived with the nine years of data collected by the Telescope Array surface detector (05-11-2008 -- 05-10-2017). The method is based on the multivariate analysis technique, so-called Boosted Decision Trees (BDT). Proton-neutrino classifier is built upon 16 observables related to both the properties of the shower front and the lateral distribution function., 10 pages, 4 figures, accepted to JETP

Published
2019

23. Search for point sources of ultra-high energy photons with the Telescope Array surface detector

Author

Yasunori Saito, Yuichiro Tameda, John N. Matthews, G. Furlich, Takaaki Ishii, Takayuki Tomida, Heungsu Shin, D. C. Rodriguez, Fumio Kakimoto, Hideki Tanaka, Hideyuki Ohoka, Pierre Sokolsky, Elliott Barcikowski, M. Takeda, Shigehiro Nagataki, Yana Zhezher, K. Hibino, Dmitri Ivanov, Douglas Bergman, Hideaki Shimodaira, Hyoming Jeong, Keijiro Mukai, Younghoon Kwon, T. Suzawa, K. Martens, Eiji Kido, Kenta Yashiro, M. V. Kuznetsov, K. Tsutsumi, Kazuhiro Machida, K. Yamazaki, Isaac Myers, Sergey Troitsky, K. H. Lee, Grigory Rubtsov, T.-A. Shibata, Hidemi Ito, J. Remington, Gordon Thomson, BayarJon Paul Lubsandorzhiev, K. Kasahara, Tom Stroman, Shoichi Kishigami, Robert Cady, Mayuko Minamino, John Belz, Hiroyuki Sagawa, Kiyoshi Tanaka, Kuzmin, Maxim Pshirkov, K. Honda, J. H. Kim, Toshio Seki, Y. Uchihori, Kei Nakai, Masaaki Tanaka, Naoaki Hayashida, Akitoshi Oshima, Y. Tsunesada, Y. Omura, Fumiya Shibata, Masaomi Ono, Toshiyuki Nonaka, R. Sahara, M. Allen, Takashi Sako, R. Ishimori, Hongsu Kim, Toru Nakamura, Kohei Yada, Igor Tkachev, Kenichi Kadota, Inkyu Park, Shingo Kawana, Jyunsei Chiba, Dongsu Ryu, H. Oda, T. Fujii, Keitaro Fujita, Y. Takagi, Akimichi Taketa, Ben Stokes, Tareq Abu-Zayyad, N. Inoue, B. G. Cheon, H. Kawai, B. K. Shin, M. Ohnishi, Federico R. Urban, S. Udo, C. C. H. Jui, Oleg Kalashev, William Hanlon, S. B. Thomas, S. Kawakami, T. Okuda, Rasha Abbasi, Seok Ho Jeong, J. Yang, L. M. Scott, Y. Hayashi, M. Yamamoto, Priti Shah, K. Kawata, Zach Zundel, Nobuyuki Sakurai, Ryota Onogi, A. Di Matteo, Daisuke Ikeda, Ryota Fujiwara, R. Mayta, S. R. Stratton, Tiffany Wong, Naoto Sakaki, R. Takeishi, Ryo Nakamura, Kazuo Saito, Masaki Fukushima, H. Yoshii, R. Azuma, T. Matsuyama, S. Ozawa, Masato Takita, H. Yamaoka, Michiyuki Chikawa, H. Tokuno, J. D. Smith, Peter Tinyakov, Samuel Blake, Shoichi Ogio, Yuta Tanoue, Motoki Hayashi, J. P. Lundquist, Koichi Sekino, Y. Takahashi, Mai Takamura, and M. Abe

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Photon flux, Library science, FOS: Physical sciences, Astronomy and Astrophysics, 01 natural sciences, Joint research, High energy photon, Science research, Space and Planetary Science, 0103 physical sciences, Research policy, Science policy, Astrophysics - High Energy Astrophysical Phenomena, 010306 general physics, 010303 astronomy & astrophysics, Vice president
Abstract

The surface detector (SD) of the Telescope Array (TA) experiment allows one to indirectly detect photons with energies of order $10^{18}$ eV and higher and to separate photons from the cosmic-ray background. In this paper we present the results of a blind search for point sources of ultra-high energy (UHE) photons in the Northern sky using the TA SD data. The photon-induced extensive air showers (EAS) are separated from the hadron-induced EAS background by means of a multivariate classifier based upon 16 parameters that characterize the air shower events. No significant evidence for the photon point sources is found. The upper limits are set on the flux of photons from each particular direction in the sky within the TA field of view, according to the experiment's angular resolution for photons. Average 95% C.L. upper limits for the point-source flux of photons with energies greater than $10^{18}$, $10^{18.5}$, $10^{19}$, $10^{19.5}$ and $10^{20}$ eV are $0.094$, $0.029$, $0.010$, $0.0073$ and $0.0058$ km$^{-2}$yr$^{-1}$ respectively. For the energies higher than $10^{18.5}$ eV, the photon point-source limits are set for the first time. Numerical results for each given direction in each energy range are provided as a supplement to this paper., Comment: accepted to MNRAS, 11 pages, 4 figures, 2 tables; results in text-file format are supplemented to paper source

Published
2019
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24. The Cosmic-Ray Composition between 2 PeV and 2 EeV Observed with the TALE Detector in Monocular Mode

Author

BayarJon Paul Lubsandorzhiev, Mayuko Minamino, K. Honda, Masaaki Tanaka, Ryuji Takeishi, Hiroyuki Sagawa, Yasunori Saito, Pierre Sokolsky, B. K. Shin, M. Takeda, M. Yamamoto, Shigehiro Nagataki, R. Sahara, Toshiyuki Fujii, Shingo Kawana, William Hanlon, T. Okuda, J. Yang, M. Allen, Seok Ho Jeong, Nobuyuki Sakurai, K. H. Lee, T.-A. Shibata, Shoichi Kishigami, Yuichiro Tameda, John N. Matthews, Zach Zundel, T. Suzawa, Fugo Yoshida, Gordon Thomson, Tom Stroman, Fumiya Shibata, Ryota Onogi, Saori Kasami, D. Ikeda, Robert Cady, S. W. Kim, Ryosuke Tsuda, Isaac Myers, Hidemi Ito, R. Mayta, Masaomi Ono, H. Kawai, K. Kawata, N. Inoue, B. G. Cheon, Katsuaki Kasahara, J. H. Kim, Takashi Sako, T. Seki, Kiyoshi Tanaka, Koichi Sekino, M. Ohnishi, Min Hyo Kim, Takayuki Tomida, Grigory Rubtsov, Hideki Tanaka, Peter Tinyakov, Samuel Blake, Toshiyuki Nonaka, Taichi Inadomi, Norimichi Shibata, Y. Omura, Hideaki Shimodaira, Hyoming Jeong, Shoichi Ogio, Younghoon Kwon, Inkyu Park, John Belz, T. Matsuyama, Ryo Higuchi, Ryota Fukushima, S. Ozawa, Katsuya Yamazaki, Y. Nakamura, Federico R. Urban, Heungsu Shin, Kohei Yada, S. Kawakami, Keitaro Fujita, Y. Takahashi, Mai Takamura, Elliott Barcikowski, R. U. Abbasi, Y. Uchihori, Kei Nakai, Maxim Pshirkov, Dmitri Ivanov, S. Udo, C. C. H. Jui, Koki Sato, Tiffany Wong, Yuto Arai, Keijiro Mukai, Hiroyuki Matsumiya, Masaki Fukushima, Yusuke Kimura, Akimichi Taketa, Yuta Tanoue, Ryota Fujiwara, M. Chikawa, Takafumi Uehama, Tareq Abu-Zayyad, Motoki Hayashi, G. Furlich, Takaaki Ishii, J. P. Lundquist, Jyunsei Chiba, Naoto Sakaki, Daiki Shinto, Eiji Kido, M. V. Kuznetsov, Kazuhiro Machida, D. C. Rodriguez, Kozo Fujisue, Kengo Sano, Priti Shah, Dongsu Ryu, S. B. Thomas, Hirokazu Iwakura, Y. Takagi, Igor Tkachev, Naohiro Sone, H. Oda, Kenta Yashiro, Masato Takita, F. Kakimoto, Hongsu Kim, Sergey Troitsky, J. Remington, Naoaki Hayashida, Akitoshi Oshima, Y. Tsunesada, Ben Stokes, Y. Zhezher, Hideyuki Ohoka, Vladim Kuzmin, Toru Nakamura, Kenichi Kadota, M. Abe, Yuya Oku, Oleg Kalashev, Ryo Nakamura, D. R. Bergman, K. Hibino, H. Tokuno, and J. D. Smith

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astroparticle physics, Physics, Monocular, Astrophysics::High Energy Astrophysical Phenomena, Detector, Mode (statistics), FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, 030226 pharmacology & pharmacy, 01 natural sciences, 03 medical and health sciences, 0302 clinical medicine, Space and Planetary Science, 0103 physical sciences, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics
Abstract

We report on a measurement of the cosmic ray composition by the Telescope Array Low-Energy Extension (TALE) air fluorescence detector (FD). By making use of the Cherenkov light signal in addition to air fluorescence light from cosmic ray (CR) induced extensive air showers, the TALE FD can measure the properties of the cosmic rays with energies as low as $\sim 2$ PeV and exceeding 1 EeV. In this paper, we present results on the measurement of $X_{\rm max}$ distributions of showers observed over this energy range. Data collected over a period of $\sim 4$ years was analyzed for this study. The resulting $X_{\rm max}$ distributions are compared to the Monte Carlo (MC) simulated data distributions for primary cosmic rays with varying composition and a 4-component fit is performed. The comparison and fit are performed for energy bins, of width 0.1 or 0.2 in $\log_{10} (E/{\rm eV})$, spanning the full range of the measured energies. We also examine the mean $X_{\rm max}$ value as a function of energy for cosmic rays with energies greater than $10^{15.8}$ eV. Below $10^{17.3}$ eV, the slope of the mean $X_{\rm max}$ as a function of energy (the elongation rate) for the data is significantly smaller than that of all elements in the models, indicating that the composition is becoming heavier with energy in this energy range. This is consistent with a rigidity-dependent cutoff of events from galactic sources. Finally, an increase in the $X_{\rm max}$ elongation rate is observed at energies just above $10^{17}$ eV indicating another change in the cosmic rays composition., 20 pages, 22 figures, accepted for publication in ApJ

Published
2021

27. Design Method for Single-Blade Centrifugal Pump Impeller

Author

Ryota Fujiwara, Junichiro Fukutomi, and Yasuyuki Nishi

Subjects
Fluid Flow and Transfer Processes, Technology, Materials science, single blade, Science (General), Axial-flow pump, Mechanical Engineering, Mechanics, Volute, Centrifugal pump, design method, Slip factor, Impeller, Q1-390, Rotodynamic pump, Turbomachinery, turbomachinery, cfd, Backflow, centrifugal impeller
Abstract

The sewage pumps are demanded a high pump efficiency and a performance in passing foreign bodies. Therefore, the impeller used by these usages requires the large passed particle size (minimum particle size in the pump). However, because conventional design method of pump impeller results in small impeller exit width, it is difficult to be applied to the design of single-blade centrifugal pump impeller which is used as a sewage pump. This paper proposes a design method for single-blade centrifugal pump impeller. As a result, the head curve of the impeller designed by the proposed design method satisfied design specifications, and pump efficiency was over 62% more than conventional single-blade centrifugal pump impeller. By comparing design values with CFD analysis values, the suction velocity ratio of the design parameter agreed well with each other, but the relative velocity ratio did not agree due to the influence of the backflow of the impeller entrance.

Published
2009

28. Radial Thrust of Single-Blade Centrifugal Pump(Fluids Engineering)

Author

Yasuyuki Nishi, Ryota Fujiwara, and Junichiro Fukutomi

Subjects
Blade (geometry), business.industry, Mechanical Engineering, Radial piston pump, Turbomachinery, Thrust, Mechanics, Computational fluid dynamics, Condensed Matter Physics, Centrifugal pump, business, Geology
Published
2009

29. Study of Word Intelligibility Based on Control of ITD or ILD on Binaural Hearing

Author

Yuto Tanaka, Ryota Fujiwara, and Yoshihisa Nakatoh

Subjects
Sound localization, Engineering, Absolute threshold of hearing, business.industry, Younger adults, Precedence effect, Speech recognition, Sense of direction, otorhinolaryngologic diseases, Intelligibility (communication), business, Binaural recording, Loudness
Abstract

Through current hearing aids research, it is possible to wear hearing aids in both ears, and hearing-impaired individuals have been found to obtain a binaural effect equivalent to that of hearing individuals. In this study, it is assumed that hearing aids are being worn in both ears, and the study focuses on the direction of the sound. This study assumes that hearing aids are being worn in both ears, and focuses on the direction of the sound. If other noise is present near the target sound, we consider whether the clarity of the target sound can be improved by applying a noise removal process, a process which gives a sense of direction to the target sound (Inter-aural Time Differences, Inter-aural Level Differences, etc.) and separates the sound images of the target sound and the noise. In this paper, the subjects consisted of both younger adults and elderly individuals; we performed a word intelligibility experiment to assay changes in word intelligibility in the case of performing inter-aural time difference to the target sound.

Published
2015

31. J0501-4-6 Radial thrust of Single-Blade Centrifugal pump

Author

Yasuyuki Nishi, Yoshikado Hotta, Toru Shigemitsu, Ryota Fujiwara, and Junichiro Fukutomi

Subjects
Materials science, Blade (geometry), Radial piston pump, Rotodynamic pump, Thrust, Mechanics, Centrifugal pump
Published
2009

35. Effect of blade outlet angle on radial thrust of single-blade centrifugal pump

Author

Ryota Fujiwara, Yasuyuki Nishi, and Junichiro Fukutomi

Subjects
Engineering, Turbine blade, business.industry, media_common.quotation_subject, Mechanical engineering, Thrust, Fluid mechanics, Mechanics, Static pressure, Centrifugal pump, Inertia, Slip factor, law.invention, Impeller, law, business, media_common
Abstract

Single-blade centrifugal pumps are widely used as sewage pumps. However, a large radial thrust acts on a single blade during pump operation because of the geometrical axial asymmetry of the impeller. This radial thrust causes vibrations of the pump shaft, reducing the service life of bearings and shaft seal devices. Therefore, to ensure pump reliability, it is necessary to quantitatively understand the radial thrust and clarify the behavior and generation mechanism. This study investigated the radial thrust acting on two kinds of single-blade centrifugal impellers having different blade outlet angles by experiments and computational fluid dynamics (CFD) analysis. Furthermore, the radial thrust was modeled by a combination of three components, inertia, momentum, and pressure, by applying an unsteady conservation of momentum to this impeller. As a result, the effects of the blade outlet angle on both the radial thrust and the modeled components were clarified. The total head of the impeller with a blade outlet angle of 16 degrees increases more than the impeller with a blade outlet angle of 8 degrees at a large flow rate. In this case, since the static pressure of the circumference of the impeller increases uniformly, the time-averaged value of the radial thrust of both impellers does not change at every flow rate. On the other hand, since the impeller blade loading becomes large, the fluctuation component of the radial thrust of the impeller with the blade outlet angle of 16 degrees increases. If the blade outlet angle increases, the fluctuation component of the inertia component will increase, but the time-averaged value of the inertia component is located near the origin despite changes in the flow rate. The fluctuation component of the momentum component becomes large at all flow rates. Furthermore, although the time-averaged value of the pressure component is almost constant, the fluctuation component of the pressure component becomes large at a large flow rate. In addition to the increase of the fluctuation component of this pressure component, because the fluctuation component of the inertia and momentum components becomes large (as mentioned above), the radial thrust increases at a large flow rate, as is the case for the impeller with a large blade outlet angle.

Published
2012

36. Influence of Argon-Plasma Etching of Single-Crystalline Silicon on Electroless Displacement Deposition of Metal Particles

Author

Shinji Yae, Naoki Fukumuro, Hitoshi Matsuda, Takashi Matsuda, Takuma Ego, Ryota Fujiwara, and Taizo Hagihara

Subjects
Materials science, Argon, Plasma etching, Metallurgy, General Engineering, chemistry.chemical_element, Metal, Chemical engineering, chemistry, visual_art, visual_art.visual_art_medium, Deposition (phase transition), Crystalline silicon, Dry etching, Reactive-ion etching, Displacement (fluid)
Published
2012

37. An engineered lipid remodeling system using a galactolipid synthase promoter during phosphate starvation enhances oil accumulation in plants.

Author

Mie Shimojima, Yuka Madoka, Ryota Fujiwara, Masato Murakawa, Yushi Yoshitake, Ryota Koizumi, Hiroyuki Ohta, Keiko Ikeda, Keiji Endo, and Katsuya Ozaki

Subjects
PLANT lipids, GALACTOLIPIDS, TRIGLYCERIDES
Abstract

Inorganic phosphate (Pi) depletion is a serious problem for plant growth. Membrane lipid remodeling is a defense mechanism that plants use to survive Pi-depleted conditions. During Pi starvation, phospholipids are degraded to supply Pi for other essential biological processes, whereas galactolipid synthesis in plastids is up-regulated via the transcriptional activation of monogalactosyldiacylglycerol synthase 3 (MGD3). Thus, the produced galactolipids are transferred to extraplastidial membranes to substitute for phospholipids. We found that, Pi starvation induced oil accumulation in the vegetative tissues of various seed plants without activating the transcription of enzymes involved in the later steps of triacylglycerol (TAG) biosynthesis. Moreover, the Arabidopsis starchless phosphoglucomutase mutant, pgm-1, accumulated higher TAG levels than did wild-type plants under Pi-depleted conditions. We generated transgenic plants that expressed a key gene involved in TAG synthesis using the Pi deficiency-responsive MGD3 promoter in wild-type and pgm-1 backgrounds. During Pi starvation, the transgenic plants accumulated higher TAG amounts compared with the non-transgenic plants, suggesting that the Pi deficiency-responsive promoter of galactolipid synthase in plastids may be useful for producing transgenic plants that accumulate more oil under Pi-depleted conditions. [ABSTRACT FROM AUTHOR]

Published
2015
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38. Distribution and fate of macrophagic ameboid cells in the rat brain

Author

Toshisaburo Nagai, Ryota Fujiwara, Kikuko Imamoto, and Toshihiro Maeda

Subjects
Histology, Microglia, Macrophages, Central nervous system, Acid Phosphatase, Brain, Primuline, Anatomy, Biology, Cell biology, Rats, White matter, chemistry.chemical_compound, Thiazoles, medicine.anatomical_structure, chemistry, Animals, Newborn, Cytoplasm, medicine, Subependymal zone, Animals, Nucleus, Medulla
Abstract

Following an intravenous injection of a fluorescent dye, primuline, into neonatal rats, the distribution of ameboid cells and their fate in the central nervous system were examined under incident fluorescence, light and electron microscopes. In the ameboid cells labeled with primuline, the ingested fluorogen spread throughout the cytoplasm, in which it appeared as a whitish yellow fluorescence. Such labeled cells displayed increased acid phosphatase (ACPase) activity. Combining primuline labeling with the ACPase reaction allowed for the identification of ameboid cells even after the transformation mentioned below. Ameboid cells were distributed throughout the white matter in neonatal rats, but were few in the gray matter. Particularly, they appeared as cell clusters in the corona radiata of the corpus callosum, the subependymal layer surrounding the ventricles, the fornical commissure, the internal and external capsules, the cerebellar peduncles and the medulla. Around 8 to 14 days after birth, the ameboid cells which had so far appeared spherical became gradually elongated with a few branched cytoplasmic processes, and scattered in the white matter. Thereafter, most primuline labeled cells transformed into cells with a dark nucleus and a thin cytoplasm including small phagosomes, i.e., into cells with features of microglia. However, a small number of ameboid cells underwent degeneration. The data indicate that the ameboid cells observed in the white matter during the postnatal period transform into microglia. Since other investigations suggest that the ameboid cells are derived from blood monocytes, microglia could initially come from monocytes.

Published
1982

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