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Your search keyword '"Shunichiro Omika"' showing total 11 results
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11 results on '"Shunichiro Omika"'

1. Performance of a Time-Of-Flight Detector and Demonstration of a Novel Position-Sensitive Detector for Mass Measurements with the Rare-RI Ring

Author

Takayuki Yamaguchi, Atsushi Kitagawa, Takaaki Kobayashi, Natsuki Tadano, S. Naimi, Yasushi Abe, Shunichiro Omika, Kentaro Hiraishi, Akira Ozawa, Hiroki Arakawa, Shinji Suzuki, Daisuke Nagae, Shinji Sato, Tetsuaki Moriguchi, Daiki Kamioka, Kiyoshi Wakayama, Z. Ge, M. Amano, Kumi Inomata, Takuya Matsumoto, Yoshiyuki Tajiri, Yukina Ichikawa, and Hongfu Li

Subjects
Physics, Time of flight detector, Optics, Position (vector), business.industry, Detector, Ring (chemistry), business
Published
2021

2. A Simple Readout Method for a Position-Sensitive Detector Using Plastic Scintillator Bars

Author

Daisuke Nagae, M. Amano, Kumi Inomata, Hongfu Li, Hiroki Arakawa, Yasushi Abe, Z. Ge, Toshio Suzuki, Shinji Sato, Kiyoshi Wakayama, Takayuki Yamaguchi, Tetsuaki Moriguchi, Daiki Kamioka, Shunichiro Omika, Shinji Suzuki, Atsushi Kitagawa, Akira Ozawa, Natsuki Tadano, and Takaaki Kobayashi

Subjects
Physics, Optics, Position (vector), Simple (abstract algebra), business.industry, Detector, Scintillator, business
Published
2021

3. First Demonstration of Mass Measurements for Exotic Nuclei Using Rare-RI Ring

Author

M. Amano, Ryo Igosawa, Shinsuke Ota, Giuseppe Lorusso, Z. Ge, Yasushi Abe, Yasushige Yano, Kiyoshi Wakayama, Tomohiro Uesaka, Toshio Suzuki, Hidetada Baba, Kunimitsu Nishimuro, Kumi Inomata, Masanori Wakasugi, Sarah Naimi, F. Suzaki, Yoshitaka Yamaguchi, Shunichiro Omika, Daisuke Nagae, Shinji Suzuki, Tetsuaki Moriguchi, Daiki Kamioka, Natsuki Tadano, Yuri A. Litvinov, Akira Ozawa, Y. Yanagisawa, T. Fujii, Toshiya Mitsui, Takayuki Yamaguchi, Shin'ichiro Michimasa, and Hiroki Arakawa

Subjects
Physics, Atomic physics, Ring (chemistry)
Published
2021

4. Beam Test on a Long Scintillating Fiber as a Position Sensor in a Storage Ring Facility

Author

Toshio Suzuki, Atsushi Kitagawa, Shunichiro Omika, Kunimitsu Nishimuro, Daisuke Nagae, Shinji Sato, Kumi Inomata, Takayuki Yamaguchi, Kiyoshi Wakayama, Natsuki Tadano, and Hiroki Arakawa

Subjects
Optics, Materials science, Scintillating fiber, business.industry, business, Beam (structure), Position sensor, Storage ring
Published
2021

5. Basic Study on Delta Ray Detection for the Determination of In-Ring Revolution Time

Author

Shunichiro Omika, Shinji Suzuki, T. Fujii, Daisuke Nagae, Akira Ozawa, Atsushi Kitagawa, Yasushi Abe, M. Amano, Toshio Suzuki, Shinji Sato, Hiroki Arakawa, Kiyoshi Wakayama, Kumi Inomata, Tetsuaki Moriguchi, Daiki Kamioka, Hongfu Li, and Takayuki Yamaguchi

Subjects
Physics, Delta ray, Atomic physics, Ring (chemistry)
Published
2021

6. Properties of a Thin YAP(Ce) Scintillation Counter for Heavy Ions

Author

Yasushi Abe, Takayuki Yamaguchi, Shunichiro Omika, Tetsuaki Moriguchi, Shinji Suzuki, Hongfu Li, Daisuke Nagae, M. Amano, Daiki Kamioka, Shinji Sato, Atsushi Kitagawa, Kiyoshi Wakayama, Hiroki Arakawa, Akira Ozawa, Kumi Inomata, and Toshio Suzuki

Subjects
Materials science, Scintillation counter, Analytical chemistry, Ion
Published
2021

7. MCP with Delay-line Anode Used for Position Sensitive Detector at Rare RI Ring

Author

Kumi Inomata, Takayuki Yamaguchi, Hongfu Li, Hiroki Arakawa, S. Naimi, Daisuki Nagae, Yoshitaka Yamaguchi, Shinji Suzuki, Shunichiro Omika, Kiyoshi Wakayama, Tomohiro Uesaka, F. Suzaki, Z. Ge, Masanori Wakasugi, Yasushi Abe, Akira Ozawa, and Tetsuaki Moriguchi

Subjects
Physics, Optics, business.industry, Position (vector), Detector, Line (text file), Ring (chemistry), business, Anode
Published
2021

8. Development of Experimental Devices for Precise Mass Measurements at the Rare-RI Ring Facility

Author

Kunimitsu Nishimuro, Takayuki Yamaguchi, F. Suzaki, Shunichiro Omika, Kumi Inomata, Shinji Suzuki, Y. Yanagisawa, Hongfu Li, Akira Ozawa, M. Amano, Kiyoshi Wakayama, Sarah Naimi, Hiroki Arakawa, Tetsuaki Moriguchi, Masanori Wakasugi, Daiki Kamioka, Yasushi Abe, Natsuki Tadano, Toshio Suzuki, Hiroshi Miura, Z. Ge, Yoshitaka Yamaguchi, Daisuke Nagae, and Tomohiro Uesaka

Subjects
Materials science, business.industry, Optoelectronics, Experimental Devices, business, Ring (chemistry)
Published
2021

9. OEDO, the energy-degrading beamline at RI Beam Factory

Author

Yohei Shimizu, Shoichiro Masuoka, Masanori Dozono, Hiroari Miyatake, Takashi Teranishi, Satoshi Takeuchi, Nobuaki Imai, Kazunari Yamada, Kentaro Yako, Kensuke Kusaka, Jongwon Hwang, Masao Ohtake, Daisuke Nagae, Yutaka X. Watanabe, Toshiyuki Sumikama, Seiya Hayakawa, Hiroyuki Takeda, Yoshiyuki Yanagisawa, Keita Nakano, Hideaki Otsu, Shunichiro Omika, Ryo Nakajima, Koichi Yoshida, Xiaohui Sun, H. Yamaguchi, Maya Takechi, He Wang, Nobuyuki Chiga, D. S. Ahn, Yukinobu Watanabe, Hiroshi Suzuki, Takashi Nakamura, Olga Beliuskina, Susumu Shimoura, K. Kawata, Masafumi Matsushita, Shoichiro Kawase, Lei Yang, N. Kitamura, S. Michimasa, Daisuke Suzuki, Kathrin Wimmer, Chihiro Iwamoto, Motonobu Takaki, Rieko Tsunoda, Hiroya Yoshida, Eiji Ideguchi, Kotaro Iribe, P. Schrock, Naoki Fukuda, K. Chikaato, Hideki Shimizu, Shinsuke Ota, and Hiroyoshi Sakurai

Subjects
Physics, Optics, Beamline, business.industry, General Physics and Astronomy, Factory (object-oriented programming), business, Beam (structure), Energy (signal processing)
Published
2019

10. Efficiency and timing performance of time-of-flight detector utilizing thin foils and crossed static electric and magnetic fields for mass measurements with Rare-RI Ring facility

Author

M. Amano, Hong Fu Li, Atsushi Kitagawa, Takaaki Kobayashi, S. Naimi, Hiroki Arakawa, Kiyoshi Wakayama, Shinji Sato, M. Mukai, Yukina Ichikawa, Akira Ozawa, Shinji Suzuki, Yoshiyuki Tajiri, Kentaro Hiraishi, Kumi Inomata, Daisuke Nagae, Shunichiro Omika, Tetsuaki Moriguchi, Daiki Kamioka, Z. Ge, Takayuki Yamaguchi, Yasushi Abe, and Takuya Matsumoto

Subjects
Physics, Nuclear and High Energy Physics, Time of flight detector, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Electron, 01 natural sciences, Secondary electrons, Ion, Magnetic field, Optics, 0103 physical sciences, Microchannel plate detector, Nuclear Experiment, 010306 general physics, business, Instrumentation, Storage ring
Abstract

We developed a time-of-flight (TOF) detector for mass measurements of rare radioactive isotopes (RIs) with a storage ring, called the Rare-RI Ring, in RIKEN. For successful mass measurements, a time resolution of less than 100 ps and a detection efficiency close to 100% are required. Additionally, the change of ion velocity in the detector should be as small as possible ( 1 0 − 4 ). To satisfy these requirements, the TOF detector utilizes ion-induced secondary electrons emitted from a thin foil and the crossed static electric and magnetic fields to transport the electrons isochronously to the microchannel plate detectors. The TOF detector was tested in both offline test with an alpha source and online test with heavy ions. In the online test with 84Kr ions of 200 MeV/nucleon, a time resolution of 38.6(2) ps in sigma and a position-averaged detection efficiency of 95.2(2)% were achieved in the entire area of 45-mm-diameter aluminum-coated Mylar foil. This good performance is attributed to the electromagnetic field achieved, which is the strongest thus far for a detector with this design.

Published
2020

11. Development of secondary electron time detector for ion beams

Author

Yukina Ichikawa, Kiyoshi Wakayama, Yoshiyuki Tajiri, Shunichiro Omika, Tetsuaki Moriguchi, M. Amano, Shinji Suzuki, Daiki Kamioka, Yasushi Abe, Atsushi Kitagawa, Natsuki Tadano, Zhung Ge, S. Naimi, Takuya Matsumoto, Akira Ozawa, Shinji Sato, Kentaro Hiraishi, Daisuke Nagae, and Takayuki Yamaguchi

Subjects
Electromagnetic field, Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Electron, Secondary electrons, Ion, Magnetic field, Optics, Physics::Accelerator Physics, business, FOIL method, Beam (structure)
Abstract

A time detector is under development for the mass measurement with the Rare-RI (radioactive iso- tope) Ring at the RI beam factory (RIBF) in RIKEN. To perform successful mass measurement, a time detector requires a small energy loss of the ion beams, a good time resolution, and a suf- ficient detection efficiency. To satisfy these requirements, our time detector utilizes isochronous transport of the secondary electrons emitted from a thin foil. The isochronous transport of the electrons from the foil to the micro-channel plate (MCP) detector is provided by the crossed electromagnetic field. To improve the detection efficiency, the transport time of the electrons is reduced by a factor of two using a strong magnetic field. An experiment to test the performance of the time detector was carried out with heavy ion beams. The time resolution was σ < 100 ps with a maximum detection efficiency of 99% for heavy ion beams. The details of the detector are presented in this contribution.

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