Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Kido, Eiji*; Inakura, Tsunenori*; Kimura, Masaaki*; Kobayashi, Nobuyuki*; Nagataki, Shigehiro*; Shimizu, Noritaka*; Tamii, Atsushi*; Utsuno, Yutaka
Astroparticle Physics, 152, p.102866_1 - 102866_12, 2023/10
Times Cited Count：1 Percentile：50.35(Astronomy & Astrophysics)no abstracts in English
Oka, Makoto
Nihon Butsuri Gakkai-Shi, 75(10), p.608 - 609, 2020/10
An introductory review of the Skyrmion in the JPS bulletin journal.
O(
He,
)F reaction; Identification of the low-energy "super" -Gamow-Teller stateFujita, Hirohiko*; Fujita, Yoshitaka*; Utsuno, Yutaka; Yoshida, Kenichi*; Adachi, Tatsuya*; Algora, A.*; Csatl
s, M.*; Deaven, J. M.*; Estevez-Aguado, E.*; Guess, C. J.*; et al.
Physical Review C, 100(3), p.034618_1 - 034618_13, 2019/09
Times Cited Count：12 Percentile：76.6(Physics, Nuclear)no abstracts in English
Seki, Yoshichika; Shinohara, Takenao; Parker, J. D.*; Yashiro, Wataru*; Momose, Atsushi*; Kato, Kosuke*; Kato, Hidemi*; Sadeghilaridjani, M.*; Otake, Yoshie*; Kiyanagi, Yoshiaki*
Journal of the Physical Society of Japan, 86(4), p.044001_1 - 044001_5, 2017/03
Times Cited Count：13 Percentile：65.98(Physics, Multidisciplinary)For the effective phase imaging at pulsed neutron sources, we have designed and developed the multi-colored Talbot-Lau interferometer which works at several wavelengths. At the Energy Resolved Neutron Imaging System RADEN in J-PARC, we demonstrated its operation by observing the visibilities of moire fringes derived from different wavelengths (0.25, 0.50, and 0.75 nm). We also investigated the variation of moire fringes dependent on the wavelength resolution from 18% to 50% and showed the advantage of pulsed beams. At the central wavelength of 0.5 nm, we have succeeded in interferometric imaging for the samples of metal rods made of aluminum, lead, and copper. An absorption grating as an analyzer was fabricated by imprinting of metallic glass for the first time, and showed a clear moire fringe with the high visibility of 68% and a well-controlled shape in comparison with previous ones fabricated by oblique evaporation of gadolinium.
Seki, Yoshichika; Shinohara, Takenao; Ueno, Wakana; Parker, J. D.*; Samoto, Tetsuo*; Yashiro, Wataru*; Momose, Atsushi*
Physics Procedia, 88, p.217 - 223, 2017/00
Times Cited Count：12 Percentile：97.6(Instruments & Instrumentation)Miyao, Tomoaki*; Maruta, Tomofumi*; Liu, Y.*; Miura, Akihiko
Proceedings of 13th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.1094 - 1096, 2016/11
no abstracts in English
Miyawaki, Nobumasa; Fukuda, Mitsuhiro*; Kurashima, Satoshi; Kashiwagi, Hirotsugu; Okumura, Susumu
Proceedings of 12th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.706 - 708, 2015/09
no abstracts in English
Miyazaki, Akemi; Kawaguchi, Kenichi*
Nihon Kenchiku Gakkai Kozokei Rombunshu, 597, p.69 - 76, 2005/11
The objective of our research is to examine the wave propagation properties of framed structures. Those structures tend to become larger and higher recently. On the case of those structures it may be possible that the structure is locally damaged before it becomes vibration state by an external force. It is seemed that for such structures then the investigation and estimation of dynamic structural behaviour from the view point of wave propagation become important. For these purposes, we planned and carried out impact hammer experiments on some lattice-type plates. In this paper the experiment results performed on three lattice-type plates and one continuum plate are shown. The results show that wave propagation properties of lattice-type plates depend on wave propagation properties of the members consist of those lattice-type plates. Preliminary experiments for evaluating the effect of the boundary conditions performed in advance of the experiments for lattice-type plate models are also shown.
Yamazaki, Atsushi; Kotaki, Hideyuki; Daito, Izuru; Kando, Masaki; Bulanov, S. V.; Esirkepov, T. Z.; Kondo, Shuji; Kanazawa, Shuhei; Homma, Takayuki*; Nakajima, Kazuhisa; et al.
Physics of Plasmas, 12(9), p.093101_1 - 093101_5, 2005/09
Times Cited Count：70 Percentile：88.66(Physics, Fluids & Plasmas)no abstracts in English
Miura, Yukitoshi
Hikari Kagaku Kenkyu No Saizensen, p.142 - 143, 2005/08
no abstracts in English
Agui, Akane; Mizumaki, Masaichiro*; Matsushita, Tomohiro*; Kawamura, Naomi*; Nakatani, Takeshi
Physica Scripta, T115, p.611 - 613, 2005/00
no abstracts in English
Machida, Masahiko; Sakai, Shigeki*
Physical Review B, 70(14), p.144520_1 - 144520_6, 2004/10
Times Cited Count：33 Percentile：77.86(Materials Science, Multidisciplinary)no abstracts in English
Kobayashi, Tetsuya; Chishiro, Etsuji; Anami, Shozo*; Yamaguchi, Seiya*; Michizono, Shinichiro*
Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.320 - 322, 2004/08
J-PARC (Japan Proton Accelerator Complex) linac, which is 300 m long, consists of 324 MHz accelerating section of the upstream and 972 MHz section (as future plan) of the downstream. In the klystron gallery, totally about 60 RF source control stations will stand for the klystrons and solid-state amplifiers. The error of the accelerating field must be within 
1 degree in phase and 1% in amplitude. Thus, the high phase stability is required to the RF reference for all of the low-level RF control systems and the beam monitor systems. This paper presents a final design and the summary of the performance evaluation of the RF reference distribution system including the timing control signal distribution for this linac.
Kobayashi, Tetsuya; Suzuki, Hiroyuki*; Anami, Shozo*; Yamaguchi, Seiya*; Kawamura, Masato*; Fukui, Yuji*; Kadokura, Eiichi*; Kamikubota, Norihiko*; Takagi, Makoto*; Yoshida, Susumu*; et al.
Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.314 - 316, 2004/08
The beam study of the low-energy front of J-PARC linac has been in progress in the KEK site. Last year, DTL1 (the first tank of three DTL's) was installed in addition to RFQ and the Medium Energy Beam Transport line, and the beam commissioning up to 20MeV has been performed successfully. In this paper, the low level RF (LLRF) System for this beam test is summarized and the performance of the RF feed back control system and monitor system of the phase and amplitude of the accelerating fields (324 MHz) is presented. It was found that the feed back system for Bunchers is also necessary to stabilize and to compensate for the beam induced fields.
Takeshima, Yuriko; Takahashi, Shigeo*; Fujishiro, Issei*
Visual Computing/Gurafikusu To CAD Godo Shimpojiumu 2004 Yokoshu, p.37 - 42, 2004/06
no abstracts in English
Kiriyama, Hiromitsu
Recent Research Developments in Optics, Vol.3, p.155 - 171, 2003/12
no abstracts in English
Kobayashi, Tetsuya; Chishiro, Etsuji; Anami, Shozo*; Yamaguchi, Seiya*; Michizono, Shinichiro*
Proceedings of 28th Linear Accelerator Meeting in Japan, p.366 - 368, 2003/08
For the J-PARC linac, a 12-MHz RF reference is distributed to 60 low-level RF control systems of klystron stations through optical links. The error of the accelerating field must be within +/- 1 degree in phase and +/ 1% in amplitude. Thus, a very high phase stability (within +/- 0.3 degree in phase) is required to the reference distribution system. New optimized optical components for this linac were developed and the performance of them was tested. The results will be reported. In adition, the timing control signal distribution system for the linac will be illustlated.
Yamauchi, Toshihiko; Kikuzawa, Nobuhiro; Minehara, Eisuke
Japanese Journal of Applied Physics, Part 1, 41(11A), p.6360 - 6363, 2002/11
Times Cited Count：2 Percentile：10.79(Physics, Applied)no abstracts in English
Kobayashi, Tetsuya; Chishiro, Etsuji; Anami, Shozo*; Yamaguchi, Seiya*; Michizono, Shinichiro*
Proceedings of 27th Linear Accelerator Meeting in Japan, p.302 - 304, 2002/08
For the high-intensity proton linac of the KEK/JAERI joint project, the error of the accelerating field must be within 1 degree in phase and 1% in amplitude. Thus high phase stability is required to the RF reference distribution system. The 12 MHz RF reference is converted to optical signal and distributed to 50 low level RF control systems of klystron and solid-state amplifier stations through the optical fiber links (E/O, O/E and optical fibers). The phase-stabilized optical fiber (PSOF) will be used as an optical transfer line. Characteristics of the optical components (E/O, O/E, PSOF) are measured. The performance of the conventional E/O and O/E is not enough for the requirements. New optimized E/O and O/E for this linac are going to be produced. The total stability of the RF reference transfer system with new optical components will be evaluated.
Fukushima, Masahiro; Suganuma, Hideo*; Chiba, Satoshi
Progress of Theoretical Physics, 107(6), p.1147 - 1161, 2002/06
Times Cited Count：1 Percentile：13.39(Physics, Multidisciplinary)Quantum Chromodynamics (QCD) is established as the standard theory of the strong interaction. Based on the lattice gauge theory, we investigate a deformation of stabilized instanton solutions in a nontrivial topological sector and further discuss appearance of monopole trajectories around the instanton.
