Dr. Taketo Nagasaki Profile

Dr. Taketo Nagasaki

at High Energy Accelerator Research Organization KEK

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 21 December 2020 Presentation + Paper

LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization

M. Hazumi, P.A.R. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banjeri, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, P. de Bernardis, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. Cliche, L. Colombo, F. Columbro, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, J. Gudmundsson, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, S. Henrot-Versillé, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. L. Kuo, A. Kushino, L. Lamagna, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, F. Noviello, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. Rubino-Martin, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, G. Savini, D. Scott, J. Seibert, Y. Sekimoto, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, S. Stever, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, K. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, B. Westbrook, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11443, 114432F (2020) https://doi.org/10.1117/12.2563050

KEYWORDS: Polarization, Satellites, Microwave radiation, Telescopes, Algorithm development, Refractor telescopes, Rockets, Quantum physics, Astrophysics, Spatial resolution

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Proceedings Article | 16 December 2020 Presentation + Paper

Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD

Y. Sekimoto, P. A. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banerji, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, P. de Bernardis, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. F. Cliche, L. Colombo, F. Columbro, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. M. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. R. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, J. Gudmundsson, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, S. Henrot-Versillé, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. L. Kuo, A. Kushino, L. Lamagna, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minanmi, K. Mitsuda, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. A. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. A. Rubino-Martin, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, G. Savini, D. Scott, J. Seibert, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, S. Stever, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, K. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, B. Westbrook, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11453, 1145310 (2020) https://doi.org/10.1117/12.2561841

KEYWORDS: Telescopes, Polarization, Optical instrument design, Satellites, Stray light, Antennas, Reflectors, Microwave radiation, Spatial resolution, Diffraction

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Proceedings Article | 15 December 2020 Presentation + Paper

Overview of the medium and high frequency telescopes of the LiteBIRD space mission

L. Montier, B. Mot, P. de Bernardis, B. Maffei, G. Pisano, F. Columbro, J. Gudmundsson, S. Henrot-Versillé, L. Lamagna, J. Montgomery, T. Prouvé, M. Russell, G. Savini, S. Stever, K. Thompson, M. Tsujimoto, C. Tucker, B. Westbrook, P. A. R. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banerji, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. Cliche, L. Colombo, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. Kuo, A. Kushino, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, G. Morgante, Y. Murata, J. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Polenta, D. Poletti, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. Rubino-Martin, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, D. Scott, J. Seibert, Y. Sekimoto, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11443, 114432G (2020) https://doi.org/10.1117/12.2562243

KEYWORDS: Telescopes, Space operations, Refractor telescopes, Sensors, Microwave radiation, Polarization, Cryogenics, Wave plates, Optical components, Lenses

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

On-site performance of GroundBIRD, a CMB polarization telescope for large angular scale observations

Shunsuke Honda, Jihoon Choi, Ricardo Tanausu Génova-Santos, Makoto Hattori, Masashi Hazumi, Takuji Ikemitsu, Hidesato Ishida, Hikaru Ishitsuka, Yonggil Jo, Kenichi Karatsu, Kenji Kiuchi, Junta Komine, Ryo Koyano, Hiroki Kutsuma, Kyungmin Lee, Satoru Mima, Makoto Minowa, Joonhyeok Moon, Makoto Nagai, Takeo Nagasaki, Masato Naruse, Shugo Oguri, Chiko Otani, Michael Peel, Rafael Rebolo-López, José Alberto Rubiño-Martín, Yutaro Sekimoto, Yoshinori Sueno, Junya Suzuki, Tohru Taino, Osamu Tajima, Nozomu Tomita, Yuta Tsuji, Tomohisa Uchida, Eunil Won, Mitsuhiro Yoshida

Proceedings Volume 11445, 114457Q (2020) https://doi.org/10.1117/12.2560918

KEYWORDS: Telescopes, Polarization, Sensors, Observatories, Microwave radiation, Field programmable gate arrays, Telecommunications, Optical instrument design, Atmospheric sensing, Detector arrays

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Proceedings Article | 10 July 2018 Presentation

Performance evaluation of MKDs on a high-speed rotating system for CMB telescope: GroundBIRD (Conference Presentation)

Satoru Mima, Jihoon Choi, Ricardo Tanausú Génova-Santos, Makoto Hattori, Masashi Hazumi, Hikaru Ishitsuka, Fumiyasu Kanno, Kenichi Karatsu, Kenji Kiuchi, Junta Komine, Ryo Koyano, Hiroki Kutsuma, Kyungmin Lee, Makoto Minowa, Makoto Nagai, Takeo Nagasaki, Masato Naruse, Shugo Oguri, Chiko Otani, Rafael Rebolo, José Alberto Rubiño-Martín, Yutaro Sekimoto, Munehisa Semoto, Junya Suzuki, Tohru Taino, Osamu Tajima, Nozomu Tomita, Tomohisa Uchida, Eunil Won, Mitsuhiro Yoshida

Proceedings Volume 10708, 107081I (2018) https://doi.org/10.1117/12.2314321

KEYWORDS: Telescopes, Magnetism, Modulation, Microwave radiation, Polarization, Sensors, Optical scanning systems, Inductance, Atmospheric optics, Observatories

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The cosmic microwave background (CMB) radiation is an afterglow of the Big Bang. It contains the crucial keys to understand the beginning of the universe. In particular, the odd-parity patterns of CMB polarization, B-modes, at more than degree-scale, are the best probe to detect primordial gravitational waves at the cosmic inflation. The GroundBIRD experiment aims to detect this large angular scale patterns from the ground. The experiment employs novel techniques; a high-speed rotational scanning system (20 revolution-per-minutes) with cold optics below 4K, and microwave kinetic inductance detectors (MKIDs) as the focal plane detectors. The fast scanning modulation is a crucial characteristic in our observation strategy to mitigate effects of the atmospheric fluctuation. The telescope rotates and scans the sky along the azimuth at the elevation angle of 60 degrees at Teide observatory in the Canary Islands. It allows us to measure CMB polarization patterns at a wide multipole range, 6 < \ell < 300, i.e. aiming to catch the reionization bump. We have developed a telescope mount with 3-axis rotation mechanism (azimuth, elevation, and boresight). We are evaluating the vibration at the focal plane position with rotating the telescope mount. The focal plane consists of seven hexagonal corrugated horn coupled MKIDs array: six hexagon units are for 145 GHz band (55 pixels/unit), and one unit is for 220 GHz band (112 pixels). Each pixel consists of a corrugated horn, a planner OMT, millimeter wave circuits for transmission of dual-polarization signals with the suppression of crosstalk modes, and two MKIDs for each polarization. Magnetic shields are also mounted so as to suppress the external magnetic fields. Trapped magnetic fields inside of the superconducting materials decrease the performance of the MKID. The geomagnetism is the static and large magnetic fields. The telescope motion makes modulation of the geomagnetism as well as the modulation of CMB signals. Therefore, we need careful evaluation associating with the telescope rotation. By using a small evaluation system with modulated magnetic fields, we understand impacts the magnetic shield as well as responses of the MKID for the modulated magnetic field. We design the shield based on them. In this presentation, we will report an evaluation of detector responses on the high-speed rotating system along the azimuth. We will also show demonstrations of our own readout electronics which is well matching with the rapid scan modulation strategy.

Proceedings Article | 29 July 2016 Paper

LiteBIRD: lite satellite for the study of B-mode polarization and inflation from cosmic microwave background radiation detection

H. Ishino, Y. Akiba, K. Arnold, D. Barron, J. Borrill, R. Chendra, Y. Chinone, S. Cho, A. Cukierman, T. de Haan, M. Dobbs, A. Dominjon, T. Dotani, T. Elleflot, J. Errard, T. Fujino, H. Fuke, T. Funaki, N. Goeckner-Wald, N. Halverson, P. Harvey, T. Hasebe, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, N. Hidehira, C. Hill, G. Hilton, W. Holzapfel, Y. Hori, J. Hubmayr, K. Ichiki, H. Imada, J. Inatani, M. Inoue, Y. Inoue, F. Irie, K. Irwin, H. Ishitsuka, O. Jeong, H. Kanai, K. Karatsu, S. Kashima, N. Katayama, I. Kawano, T. Kawasaki, B. Keating, S. Kernasovskiy, R. Keskitalo, A. Kibayashi, Y. Kida, N. Kimura, K. Kimura, T. Kisner, K. Kohri, E. Komatsu, K. Komatsu, C.-L. Kuo, S. Kuromiya, A. Kusaka, A. Lee, D. Li, E. Linder, M. Maki, H. Matsuhara, T. Matsumura, S. Matsuoka, S. Matsuura, S. Mima, Y. Minami, K. Mitsuda, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, T. Nishibori, K. Nishijo, H. Nishino, A. Noda, T. Noguchi, H. Ogawa, W. Ogburn, S. Oguri, I. Ohta, N. Okada, A. Okamoto, T. Okamura, C. Otani, G. Pisano, G. Rebeiz, P. Richards, S. Sakai, Y. Sakurai, Y. Sato, N. Sato, Y. Segawa, S. Sekiguchi, Y. Sekimoto, M. Sekine, U. Seljak, B. Sherwin, T. Shimizu, K. Shinozaki, S. Shu, R. Stompor, H. Sugai, H. Sugita, J. Suzuki, T. Suzuki, A. Suzuki, O. Tajima, S. Takada, S. Takakura, K. Takano, S. Takatori, Y. Takei, D. Tanabe, T. Tomaru, N. Tomita, P. Turin, S. Uozumi, S. Utsunomiya, Y. Uzawa, T. Wada, H. Watanabe, B. Westbrook, N. Whitehorn, Y. Yamada, R. Yamamoto, N. Yamasaki, T. Yamashita, T. Yoshida, M. Yoshida, K. Yotsumoto

Proceedings Volume 9904, 99040X (2016) https://doi.org/10.1117/12.2231995

KEYWORDS: Telescopes, Satellites, Microwave radiation, Polarization, Sensors, Space telescopes, Space operations, Detector arrays, Mirrors, Bolometers

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Proceedings Article | 27 July 2016 Paper

GroundBIRD: observations of CMB polarization with fast scan modulation and MKIDs

Shugo Oguri, Jihoon Choi, Thushara Damayanthi, Makoto Hattori, Masashi Hazumi, Hikaru Ishitsuka, Kenji Kiuchi, Ryo Koyano, Hiroki Kutsuma, Kyungmin Lee, Satoru Mima, Makoto Minowa, Makoto Nagai, Taketo Nagasaki, Chiko Otani, Yutaro Sekimoto, Munehisa Semoto, Jun’ya Suzuki, Tohru Taino, Osamu Tajima, Nozomu Tomita, Eunil Won, Tomohisa Uchida, Mitsuhiro Yoshida

Proceedings Volume 9906, 99063L (2016) https://doi.org/10.1117/12.2231672

KEYWORDS: Microwave radiation, Polarization, Mirrors, Inductance, Sensors, Modulation, Telescopes, Prototyping, Calibration, Semiconducting wafers

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Proceedings Article | 27 July 2016 Paper

Ground-based atmospheric water vapor monitoring system with spectroscopy of radiation in 20-30 GHz and 50-60 GHz bands

Takeo Nagasaki, Osamu Tajima, Kentaro Araki, Hiroshi Ishimoto

Proceedings Volume 9906, 99063K (2016) https://doi.org/10.1117/12.2232277

KEYWORDS: Receivers, Atmospheric monitoring, Atmospheric physics, Clouds, Oxygen, Molecules, Calibration, Antennas, Prototyping, Spectroscopy

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Proceedings Article | 22 July 2014 Paper

Development of a 30-cm submillimeter-wave telescope for the operation at Dome Fuji in Antarctica

S. Ishii, M. Seta, T. Nagasaki, N. Nakai, M. Nagai, Y. Miyamoto, H. Imada, K. Doihata, K. Saito, Y. Sekimoto

Proceedings Volume 9145, 914535 (2014) https://doi.org/10.1117/12.2055748

KEYWORDS: Telescopes, Antennas, Receivers, Mirrors, Spectroscopy, Domes, Control systems, Clouds, Carbon monoxide, Reflectors

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