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Dive into the research topics where Shinsuke Kawasaki is active.

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Featured researches published by Shinsuke Kawasaki.


11TH CONFERENCE ON THE INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: (CIPANP 2012) | 2013

An EDM measurement with a new comagnetometer and a high density UCN source

K. Matsuta; Yasuhiro Masuda; K. Hatanaka; Shinsuke Kawasaki; R. Matsumiya; M. Mihara; S. C. Jeong; Yutaka Watanabe; T. Adachi; D. Nishimura; K. Asahi; Jeffrey William Martin; A. Konaka; A. Miller; C. Bidinosti; T. Dawson; L. Lee; C.A. Davis; W. D. Ramsay; W. T. H. van Oers; E. Korkmaz; L. Buckman

We discuss a new neutron EDM measurement of 10−28 e cm. For the improved UCN density, we will apply a new spallation UCN source of superfluid He. For magnetometry, 129Xe nuclear spins are injected into a EDM cell, to supress GPE. Performance of the prototype KEK-RCNP UCN source, and the obtained Ramsey resonance spectra are presented.


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

Measurement of nEDM with a He-II Spallation UCN Source

Yasuhiro Masuda; K. Hatanaka; Sun-Chan Jeong; Shinsuke Kawasaki; R. Matsumiya; K. Matsuta; M. Mihara; Edgard Pierre; Yunchang Shin; Yutaka Watanabe

A neutron EDM measurement by means of a He-II spallation UCN source is discussed. For an improvement in the statistical error, a proton beam power is increased up to 20 kW so that a UCN density in an EDM measurement cell becomes 800 UCN/cm. The  heating in a He-II bottle is removed by using a He cryostat. Polarized UCN are extracted from the He-II bottle through an aluminum window by using a superconducting magnet for Ramsey resonance in the EDM cell. For an improvement in the systematic error, Xe nuclear spins are used for magnetic field monitoring in the EDM cell. A geometric phase effect is suppressed by a buffer gas effect.


Physical Review Letters | 2012

Spallation ultracold neutron source of superfluid helium below 1 K.

Yasuhiro Masuda; K. Hatanaka; Sun-Chan Jeong; Shinsuke Kawasaki; R. Matsumiya; K. Matsuta; M. Mihara; Yutaka Watanabe


Physics Letters A | 2012

Neutron electric dipole moment measurement with a buffer gas comagnetometer

Yasuhiro Masuda; K. Asahi; K. Hatanaka; Sun-Chan Jeong; Shinsuke Kawasaki; R. Matsumiya; K. Matsuta; M. Mihara; Yutaka Watanabe


Physics Procedia | 2014

Spallation UCN Production for nEDM

Yasuhiro Masuda; K. Hatanaka; Sun-Chan Jeong; Shinsuke Kawasaki; R. Matsumiya; K. Matsuta; M. Mihara; Yutaka Watanabe


Hyperfine Interactions | 2013

Nuclear moments as a probe of electronic structure in material, exotic nuclear structure and fundamental symmetry

K. Matsuta; T. Minamisono; M. Mihara; M. Fukuda; Shengyun Zhu; Yasuhiro Masuda; K. Hatanaka; Daqing Yuan; Yongnan Zheng; Yi Zuo; Ping Fang; Dongmei Zhou; T. Ohtsubo; T. Izumikawa; S. Momota; D. Nishimura; R. Matsumiya; A. Kitagawa; S. Sato; M. Kanazawa; M. Torikoshi; T. Nagatomo; Y. Nojiri; T. Suzuki; Xizhen Zhang; J. R. Alonso; T. J. M. Symons; Shinsuke Kawasaki; S. C. Jeong; Yutaka Watanabe


Hyperfine Interactions | 2013

Creation of polarized ultracold neutrons and observation of Ramsey resonance for electric dipole moment measurement

K. Matsuta; Yasuhiro Masuda; K. Hatanaka; S. C. Jeong; Shinsuke Kawasaki; R. Matsumiya; M. Mihara; Yutaka Watanabe; D. Nishimura; Y. Morita; K. Asahi; T. Adachi; Jeffrey William Martin; A. Konaka; A. Miller; C. Bidinosti; T. Dawson; L. Lee; C.A. Davis; D. Ramsay; W. T. H. van Oers; E. Korkmaz; L. Buchman


arXiv: Instrumentation and Detectors | 2018

A beamline for fundamental neutron physics at TRIUMF.

S. Ahmeda; T. Andalib; M.J. Barnes; C.B. Bidinosti; Y. Bylinsky; J. Chak; M. Das; C.A. Davis; B. Franke; M.T.W. Gericke; P. Giampa; M. Hahn; S. Hansen-Romu; K. Hatanaka; B. Jamieson; D. Jones; K. Katsika; Shinsuke Kawasaki; W. Klassen; A. Konaka; E. Korkmaz; F. Kuchler; L. Kurchaninov; M. Lang; L. Lee; T. Lindner; K.W. Madison; J. Mammei; R. Mammei; Jeffrey William Martin


Archive | 2018

arXiv : A beamline for fundamental neutron physics at TRIUMF

S. Ahmed; W. Schreyer; M. Lang; M. Hahn; W. Klassen; B. Jamieson; Shinsuke Kawasaki; L. Lee; R. Picker; C.A. Davis; J. Chak; Y.-N. Rao; W.T.H. van Oers; K. Hatanaka; E. Korkmaz; D. Yosifov; W. D. Ramsay; T. Andalib; Y. Bylinsky; K. Katsika; J. Mammei; E. Pierre; D. Jones; A. Konaka; A. Sikora; R. Mammei; C.B. Bidinosti; M.J. Barnes; Yutaka Watanabe; J. Sonier


Hyperfine Interactions | 2016

Present status of the 129Xe comagnetometer development for neutron EDM measurement

M. Mihara; Yasuhiro Masuda; K. Matsuta; Shinsuke Kawasaki; Yutaka Watanabe; K. Hatanaka; R. Matsumiya

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