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Dive into the research topics where S. Seki is active.

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Featured researches published by S. Seki.


Progress of Theoretical and Experimental Physics | 2016

Development of a low-mass and high-efficiency charged-particle detector

D. Naito; Y. Maeda; N. Kawasaki; T. Masuda; H. Nanjo; T. Nomura; M. Sasaki; Noboru Sasao; S. Seki; K. Shiomi; Y. Tajima

We developed a low-mass and high-efficiency charged particle detector for an experimental study of the rare decay


Progress of Theoretical and Experimental Physics | 2016

Long-lived neutral-kaon flux measurement for the KOTO experiment

T. Masuda; J. K. Ahn; S. Banno; M. Campbell; Y. T. Duh; T. Hineno; Y. B. Hsiung; T. Inagaki; E. Iwai; N. Kawasaki; E. J. Kim; Y. J. Kim; J. W. Ko; T. K. Komatsubara; A. S. Kurilin; G. H. Lee; J. W. Lee; S. K. Lee; G. Y. Lim; J. Ma; D. MacFarland; Y. Maeda; T. Matsumura; R. Murayama; D. Naito; Y. Nakaya; H. Nanjo; T. Nomura; Y. Odani; H. Okuno

K_L \rightarrow \pi^0 \nu \bar{\nu}


Progress of Theoretical and Experimental Physics | 2015

An aerogel Cherenkov detector for multi-GeV photon detection with low sensitivity to neutrons

Y. Maeda; N. Kawasaki; T. Masuda; Hideki Morii; D. Naito; Y. Nakajima; H. Nanjo; T. Nomura; Noboru Sasao; S. Seki; K. Shiomi; T. Sumida; Y. Tajima

. The detector is important to suppress the background with charged particles to the level below the signal branching ratio predicted by the Standard Model (O(10


Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe — | 2015

Evaluation of the Inefficiency of a Charged Particle Detector for the KOTO Experiment

D. Naito; Noboru Sasao; T. Nomura; H. Nanjo; N. Kawasaki; Y. Maeda; S. Seki; Ichinori Kamiji; Kota Nakagiri

^{-11}


Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe — | 2015

Halo Neutron Measurement for KOTO Experiment

N. Kawasaki; Noboru Sasao; T. Nomura; H. Nanjo; D. Naito; Y. Maeda; S. Seki; Ichinori Kamiji; Kouta Nakagiri

)). The detector consists of two layers of 3-mm-thick plastic scintillators with wavelength shifting fibers embedded and Multi Pixel Photon Counters for readout. We manufactured the counter and evaluated the performance such as light yield, timing resolution, and efficiency. With this design, we achieved the inefficiency per layer against penetrating charged particles to be less than


Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe — | 2015

Gas Wire Chamber for In-Beam Charged Particle Detector in KOTO Experiment

Kota Nakagiri; Noboru Sasao; T. Nomura; H. Nanjo; N. Kawasaki; D. Naito; Y. Maeda; S. Seki; Ichinori Kamiji

1.5 \times 10^{-5}


Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe — | 2015

Development of Amplifier and Shaper for High-Rate MWPC

Ichinori Kamiji; Noboru Sasao; T. Nomura; H. Nanjo; N. Kawasaki; Y. Maeda; D. Naito; S. Seki; Kota Nakagiri

, which satisfies the requirement of the KOTO experiment determined from simulation studies.


Progress of Theoretical and Experimental Physics | 2017

A new search for the KL → π0ν ν and KL → π 0X0 decays

J. K. Ahn; K. Y. Baek; S. Banno; B. Beckford; B. Brubaker; T. Cai; M. Campbell; C. Carruth; S. H. Chen; S. Chu; Y. T. Duh; T. Furukawa; H. Haraguchi; T. Hineno; Y. B. Hsiung; M. Hutcheson; T. Inagaki; M. Isoe; E. Iwai; T. Kamibayashi; I. Kamiji; N. Kawasaki; E. J. Kim; Y. J. Kim; J. W. Ko; T. K. Komatsubara; A. S. Kurilin; G. H. Lee; H. S. Lee; J. W. Lee

The KOTO (


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2014

A vacuum tolerant high voltage system with a low noise and low power Cockcroft–Walton photomultiplier base

T. Masuda; E. Iwai; N. Kawasaki; E.J. Kim; T. K. Komatsubara; J. W. Lee; G. Y. Lim; Y. Maeda; D. Naito; H. Nanjo; T. Nomura; Y. D. Ri; Noboru Sasao; Kazufumi Sato; S. Seki; K. Shiomi; Y. Sugiyama; M. Togawa; H. Watanabe; Tatsuhiko Yamanaka

K^0


arXiv: High Energy Physics - Experiment | 2018

Search for the

J. K. Ahn; B. Beckford; J. Beechert; K. Bryant; M. Campbell; S. H. Chen; K. Dona; N. Hara; H. Haraguchi; Y. B. Hsiung; M. Hutcheson; T. Inagaki; I. Kamiji; N. Kawasaki; E. J. Kim; J. L. Kim; Y. J. Kim; J. W. Ko; T. K. Komatsubara; K. Kotera; A. S. Kurilin; J. W. Lee; G. Y. Lim; C. Lin; Q. Lin; Y. Luo; J. Ma; Y. Maeda; T. Mari; T. Masuda

at Tokai) experiment aims to observe the CP-violating rare decay

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E. J. Kim

Chonbuk National University

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