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Ishida, Takekazu*; Vu, TheDang*; Shishido, Hiroaki*; Aizawa, Kazuya; Oku, Takayuki; Oikawa, Kenichi; Harada, Masahide; Kojima, Kenji M*; Miyajima, Shigeyuki*; Koyama, Tomio*; et al.
Journal of Low Temperature Physics, 214(3-4), p.152 - 157, 2024/02
Times Cited Count:0 Percentile:0.01(Physics, Applied)Shishido, Hiroaki*; Vu, TheDang*; Aizawa, Kazuya; Kojima, Kenji M*; Koyama, Tomio*; Oikawa, Kenichi; Harada, Masahide; Oku, Takayuki; Soyama, Kazuhiko; Miyajima, Shigeyuki*; et al.
Journal of Applied Crystallography, 56(4), p.1108 - 1113, 2023/08
Times Cited Count:0 Percentile:0.02(Chemistry, Multidisciplinary)Shishido, Hiroaki*; Nishimura, Kazuma*; Vu, TheDang*; Aizawa, Kazuya; Kojima, Kenji M*; Koyama, Tomio*; Oikawa, Kenichi; Harada, Masahide; Oku, Takayuki; Soyama, Kazuhiko; et al.
IEEE Transactions on Applied Superconductivity, 31(9), p.2400505_1 - 2400505_5, 2021/12
Times Cited Count:0 Percentile:0(Engineering, Electrical & Electronic)In this study, we employed a superconducting detector, current-biased kinetic-inductance detector (CB-KID) for neutron imaging using a pulsed neutron source. We employed the delay-line method, and high spatial resolution imaging with only four reading channels was achieved. We also performed wavelength-resolved neutron imaging by the time-of-flight method. We obtained the neutron transmission images of a Gd-Al alloy sample, inside which single crystals of GdAl were grown, using the delay-line CB-KID. Single crystals were well imaged, in both shapes and distributions, throughout the Al-Gd alloy. We identified Gd nuclei via neutron transmissions that exhibited characteristic suppression above the neutron wavelength of 0.03 nm. In addition, the Gd resonance dip, a dip structure of the transmission caused by the nuclear reaction between an isotope and neutrons, was observed even when the number of events was summed over a limited area of 15 m 12 m. Gd selective imaging was performed using the resonance dip of Gd, and it showed clear Gd distribution even with a limited neutron wavelength range of 1 pm.
Shishido, Hiroaki*; Nishimura, Kazuma*; Vu, TheDang*; Kojima, Kenji M*; Koyama, Tomio*; Oikawa, Kenichi; Harada, Masahide; Miyajima, Shigeyuki*; Hidaka, Mutsuo*; Oku, Takayuki; et al.
Journal of Physics; Conference Series, 1590, p.012033_1 - 012033_8, 2020/10
Times Cited Count:0 Percentile:0.01(Engineering, Electrical & Electronic)Takayanagi, Tomohiro; Ueno, Tomoaki; Horino, Koki
Journal of Physics; Conference Series, 1350(1), p.012183_1 - 012183_7, 2019/12
Times Cited Count:0 Percentile:0.06(Physics, Particles & Fields)As one of the advanced research and development for maintaining the stable operation of J-PARC RCS, we are developing semiconductor switch circuit for thyratron substitute adopted in kicker system. Radiation symmetric type circuits using semiconductors of SIC-MOSFETs are composed of circuits in which many semiconductor switches are multiplexed in parallel. Since the lengths of all parallel circuits are equal, the output waveform will not be distorted due to timing jitter or impedance. This circuit is useful for outputting the waveform of ultrafast short pulse. Therefore, we have developed a circuit that achieves further low inductance by making the power transmission circuit into a double circular ring structure equal to the coaxial shape. Compare the inductance value obtained from the structure and the output waveform. In addition, we compare the calculation and the measurement in the test and present the verification result of the developed circular ring structure.
Iizawa, Yuki*; Shishido, Hiroaki*; Nishimura, Kazuma*; Vu, TheDang*; Kojima, Kenji M*; Koyama, Tomio*; Oikawa, Kenichi; Harada, Masahide; Miyajima, Shigeyuki*; Hidaka, Mutsuo*; et al.
Superconductor Science and Technology, 32(12), p.125009_1 - 125009_8, 2019/12
Times Cited Count:13 Percentile:58.41(Physics, Applied)Matsuoka, Mamoru; JT-60 Team
Fusion Engineering and Design, 26(1-4), p.59 - 68, 1995/01
Times Cited Count:2 Percentile:28.04(Nuclear Science & Technology)no abstracts in English
Tamai, Hiroshi; Shoji, Teruaki; Nagashima, Keisuke; Miura, Yukitoshi; Yamauchi, Toshihiko; Ogawa, Hiroaki; Kawashima, Hisato; Matsuda, Toshiaki; Mori, Masahiro; *; et al.
Journal of Nuclear Materials, 220-222, p.365 - 369, 1995/00
Times Cited Count:17 Percentile:82.2(Materials Science, Multidisciplinary)no abstracts in English
Kamada, Yutaka; Takizuka, Tomonori; Kikuchi, Mitsuru; Ninomiya, Hiromasa
Nuclear Fusion, 33(2), p.225 - 236, 1993/00
Times Cited Count:19 Percentile:55.85(Physics, Fluids & Plasmas)no abstracts in English
; ; *; *; *; *
Fujikura Densen Giho, 66(9), p.101 - 104, 1983/00
no abstracts in English
Machida, Masahiko; Ota, Yukihiro
no journal, ,
Fluctuations significantly alter the conventional picture on transport phenomena in 1D superconductors. We study the current-dependence of the kinetic inductance in superconducting wires using the Ginzuburg-Landau approach with fluctuations. We obtain a non-monotonic current-dependence of the kinetic inductance when the thermal fluctuations predominate the behaviors of the superconducting phase. This result is ascribed to the occurrence of phase-slip centers from thermally-activated processes. We also find that our approach qualitatively reproduces the experiment by Annunziata et al. Moreover, we discuss the effects of thermal fluctuations on the characteristics of superconducting detectors. We will also discuss the effects of quantum phase slips on superconducting detectors.
Ieda, Junichi; Yamane, Yuta*
no journal, ,
no abstracts in English
Ieda, Junichi; Yamane, Yuta*
no journal, ,
no abstracts in English
Ieda, Junichi
no journal, ,
no abstracts in English
Ieda, Junichi; Araki, Yasufumi; Yamane, Yuta*
no journal, ,
no abstracts in English