Dr. Tomohisa Uchida Profile

Dr. Tomohisa Uchida

at High Energy Accelerator Research Organization KEK

SPIE Involvement:

Author

Publications (14)

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 | 9 August 2016 Paper

Conceptual design of wide-field focal plane with InGaAs image sensors

Y. Komiyama, H. Nakaya, N. Kashikawa, T. Uchida

Proceedings Volume 9908, 99085X (2016) https://doi.org/10.1117/12.2231569

KEYWORDS: Sensors, Indium gallium arsenide, Image sensors, Astronomy, Charge-coupled devices, Aluminum nitride, Near infrared, Cameras, Quantum efficiency, Silicon carbide

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Proceedings Article | 5 August 2016 Paper

Low temperature performance of a commercially available InGaAs image sensor

Hidehiko Nakaya, Yutaka Komiyama, Nobunari Kashikawa, Tomohisa Uchida, Takahiro Nagayama, Michitoshi Yoshida

Proceedings Volume 9915, 99151O (2016) https://doi.org/10.1117/12.2231169

KEYWORDS: Sensors, Indium gallium arsenide, Image sensors, Astronomy, Photonics, Quantum efficiency, Electronics, Cadmium sulfide, Readout integrated circuits, Photons

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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 | 5 October 2012 Paper

Hyper Suprime-Cam

Satoshi Miyazaki, Yutaka Komiyama, Hidehiko Nakaya, Yukiko Kamata, Yoshi Doi, Takashi Hamana, Hiroshi Karoji, Hisanori Furusawa, Satoshi Kawanomoto, Tomoki Morokuma, Yuki Ishizuka, Kyoji Nariai, Yoko Tanaka, Fumihiro Uraguchi, Yousuke Utsumi, Yoshiyuki Obuchi, Yuki Okura, Masamune Oguri, Tadafumi Takata, Daigo Tomono, Tomio Kurakami, Kazuhito Namikawa, Tomonori Usuda, Hitomi Yamanoi, Tsuyoshi Terai, Hatsue Uekiyo, Yoshihiko Yamada, Michitaro Koike, Hiro Aihara, Yuki Fujimori, Sogo Mineo, Hironao Miyatake, Naoki Yasuda, Jun Nishizawa, Tomoki Saito, Manobu Tanaka, Tomohisa Uchida, Nobu Katayama, Shiang-Yu Wang, Hsin-Yo Chen, Robert Lupton, Craig Loomis, Steve Bickerton, Paul Price, Jim Gunn, Hisanori Suzuki, Yasuhito Miyazaki, Masaharu Muramatsu, Koei Yamamoto, Makoto Endo, Yutaka Ezaki, Noboru Itoh, Yoshinori Miwa, Hideo Yokota, Toru Matsuda, Ryuichi Ebinuma, Kunio Takeshi

Proceedings Volume 8446, 84460Z (2012) https://doi.org/10.1117/12.926844

KEYWORDS: Charge-coupled devices, Cameras, Telescopes, Quantum efficiency, Galactic astronomy, Silicon, Diffusion, Mirrors, Sensors, Image quality

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Proceedings Article | 27 September 2012 Paper

Development of electron tracking Compton camera for both balloon and future satellite experiments for MeV gamma-ray astronomy

Toru Tanimori, Masahiro Ikeno, Hidetoshi Kubo, Kentaro Miuchi, Shigeto Kabuki, Joseph Parker, Yuji Kishimoto, Shotaro Komura, Shunsuke Kurosawa, Satoru Iwaki, Tatsuya Sawano, Kiseki Nakamura, Yoshihiro Matsuoka, Tetsuya Mizumoto, Yasushi Sato, Manobu Tanaka, Atsushi Takada, Tomohisa Uchida, Kazuki Ueno

Proceedings Volume 8443, 84430D (2012) https://doi.org/10.1117/12.924242

KEYWORDS: Gamma radiation, Satellites, Cameras, Scintillators, Sensors, Gamma-ray astronomy, Compton scattering, Atmospheric particles, Spatial resolution, Genetical swarm optimization

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Proceedings Article | 25 September 2012 Paper

Hyper Suprime-Cam: performance of the CCD readout electronics

Hidehiko Nakaya, Hironao Miyatake, Tomohisa Uchida, Hiroki Fujimori, Sogo Mineo, Hiroaki Aihara, Hisanori Furusawa, Yukiko Kamata, Hiroshi Karoji, Satoshi Kawanomoto, Yutaka Komiyama, Satoshi Miyazaki, Tomoki Morokuma, Yoshiyuki Obuchi, Yuki Okura, Manobu Tanaka, Yoko Tanaka, Fumihiro Uraguchi, Yousuke Utsumi

Proceedings Volume 8453, 84532R (2012) https://doi.org/10.1117/12.925764

KEYWORDS: Electronics, Charge-coupled devices, CCD cameras, Cameras, Cadmium sulfide, Interference (communication), Signal to noise ratio, Telescopes, Analog electronics, Clocks

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Proceedings Article | 20 July 2010 Paper

Hyper Suprime-Cam: camera design

Yutaka Komiyama, Hiroaki Aihara, Hiroki Fujimori, Hisano Furusawa, Yukiko Kamata, Hiroshi Karoji, Satoshi Kawanomoto, Sogo Mineo, Hironao Miyatake, Satoshi Miyazaki, Tomoki Morokuma, Hidehiko Nakaya, Kyoji Nariai, Yoshiyuki Obuchi, Yuki Okura, Yoko Tanaka, Tomohisa Uchida, Fumihiro Uraguchi, Yosuke Utsumi, Makoto Endo, Yutaka Ezaki, Toru Matsuda, Yoshinori Miwa, Hideo Yokota, Shiang-Yu Wang, Eric Liaw, Hsin-Yo Chen, Chyi-Fong Chiu, Dun-Zen Jeng

Proceedings Volume 7735, 77353F (2010) https://doi.org/10.1117/12.856856

KEYWORDS: Charge-coupled devices, Telescopes, Camera shutters, Manufacturing, Image quality, Optical filters, CCD cameras, Cameras, Glasses, Lenses

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Proceedings Article | 19 July 2010 Paper

A prototype of Hyper Suprime-Cam data analysis system

Hisanori Furusawa, Naoki Yasuda, Yuki Okura, Fumiaki Nakata, Sogo Mineo, Tadafumi Takata, Manobu Tanaka, Ryosuke Itoh, Nobuhiko Katayama, Yutaka Komiyama, Satoshi Miyazaki, Yousuke Utsumi, Hiroaki Aihara, Tomohisa Uchida, Robert Lupton

Proceedings Volume 7740, 77402I (2010) https://doi.org/10.1117/12.856823

KEYWORDS: Prototyping, Data analysis, Statistical analysis, Cameras, Data processing, Databases, Astronomy, Current controlled current source, Imaging systems, Telescopes

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Proceedings Article | 15 July 2010 Paper

Hyper Suprime-Cam: development of the CCD readout electronics

Hidehiko Nakaya, Tomohisa Uchida, Hironao Miyatake, Hiroki Fujimori, Sogo Mineo, Hiroaki Aihara, Hisanori Furusawa, Yukiko Kamata, Hiroshi Karoji, Satoshi Kawanomoto, Yutaka Komiyama, Satoshi Miyazaki, Tomoki Morokuma, Yoshiyuki Obuchi, Yuki Okura, Manobu Tanaka, Yoko Tanaka, Fumihiro Uraguchi, Yosuke Utsumi

Proceedings Volume 7735, 77352P (2010) https://doi.org/10.1117/12.856853

KEYWORDS: Charge-coupled devices, Electronics, Clocks, CCD cameras, Power supplies, Analog electronics, Interfaces, Interference (communication), Cadmium sulfide, Cameras

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Proceedings Article | 12 July 2008 Paper

Hyper Suprime-Cam: data analysis and management system

Hisanori Furusawa, Manobu Tanaka, Yoshiji Yasu, Soh Suzuki, Ryosuke Itoh, Nobuhiko Katayama, Yutaka Komiyama, Satoshi Miyazaki, Yousuke Utsumi, Tomohisa Uchida, Hiroaki Aihara, Naoki Yasuda

Proceedings Volume 7016, 70161F (2008) https://doi.org/10.1117/12.788375

KEYWORDS: Data analysis, Prototyping, Statistical analysis, Databases, Data processing, Imaging systems, Calibration, Cameras, Data archive systems, Analytical research

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Proceedings Article | 11 July 2008 Paper

Hyper Suprime-Cam: CCD readout electronics

Hidehiko Nakaya, Tomohisa Uchida, Hironao Miyatake, Hiroaki Aihara, Yoshiyuki Doi, Hisanori Furusawa, Hiroshi Karoji, Yukiko Kamata, Satoshi Kawanomoto, Yutaka Komiyama, Satoshi Miyazaki, Tomoki Morokuma, Manobu Tanaka, Yoko Tanaka

Proceedings Volume 7014, 70144X (2008) https://doi.org/10.1117/12.789197

KEYWORDS: Charge-coupled devices, Electronics, Analog electronics, Cadmium sulfide, Telescopes, CCD cameras, Interference (communication), Clocks, Aluminum, Astronomy

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Proceedings Article | 9 July 2008 Paper

Hyper Suprime-Cam: back-end electronics for CCD readout

Tomohisa Uchida, Hironao Miyatake, Hidehiko Nakaya, Hiroaki Aihara, Satoshi Miyazaki

Proceedings Volume 7014, 70146K (2008) https://doi.org/10.1117/12.788085

KEYWORDS: Data acquisition, Charge-coupled devices, Cameras, Electronics, Prototyping, Control systems, Image processing, Clocks, Data processing, Field programmable gate arrays

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Showing 5 of 14 publications

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