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Journal Articles

Strong flux pinning by columnar defects with directionally dependent morphologies in GdBCO-coated conductors irradiated with 80 MeV Xe ions

Sueyoshi, Tetsuro*; Kotaki, Tetsuya*; Furuki, Yuichi*; Fujiyoshi, Takanori*; Semboshi, Satoshi*; Ozaki, Toshinori*; Sakane, Hitoshi*; Kudo, Masaki*; Yasuda, Kazuhiro*; Ishikawa, Norito

Japanese Journal of Applied Physics, 59(2), p.023001_1 - 023001_7, 2020/02

 Times Cited Count:6 Percentile:38.95(Physics, Applied)

We show that Xe ion irradiation with 80 MeV to GdBa$$_{2}$$Cu$$_{3}$$Oy-coated conductors creates different morphologies of columnar defects (CDs) depending on the irradiation angles relative to the c-axis: continuous CDs with a larger diameter are formed for oblique irradiation at $$theta_{rm i}$$ = 45$$^{circ}$$, whereas the same ion beam at a different angle ($$theta_{rm i}$$ = 0$$^{circ}$$) induces the formation of discontinuous CDs. The direction-dependent morphologies of CDs significantly affect the angular behavior of the critical current density $$J_{rm c}$$.

Journal Articles

Improvement of inner surface inspection system for superconducting cavities applying image processing technique

Kuriyama, Yasutoshi*; Iwashita, Yoshihisa*; Hirota, Katsuya*; Hayano, Hitoshi*; Fuwa, Yasuhiro

Proceedings of 16th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.32 - 35, 2019/10

Research and development of gradient enhancement of superconducting RF accelerating cavity is carried out by accelerator research institute in the world, but defects on the cavity surface limit accelerating electric field. Therefore, development of "Inside inspection system for superconducting accelerated cavity" that optically visualizes the state of the inner surface of the superconducting cavity has been carried out, and results have been achieved. In this research, we apply image processing technology that has developed remarkably in recent years to the internal inspection system, and advanced the defect recognition method. Extraction of depth information and image synthesis were performed from images obtained with different focal positions with the camera for internal surface inspection. Also, by performing pattern recognition processing on the images, automatic detection of defects has become possible. By integrating these techniques into the cavity inner surface inspection system, it becomes possible to shorten the scan time for defect search and acquire the defect shape.

Journal Articles

Inverted-parabolic and weak strain dependencies on the critical current in practical $$<$$110$$>$$ and $$<$$100$$>$$ oriented REBCO tapes

Osamura, Kozo*; Machiya, Shutaro*; Kajiwara, Kentaro*; Kawasaki, Takuro; Harjo, S.; Zhang, Y.*; Fujita, Shinji*; Iijima, Yasuhiro*; Hampshire, D. P.*

AIP Advances (Internet), 9(7), p.075216_1 - 075216_11, 2019/07

 Times Cited Count:7 Percentile:37.59(Nanoscience & Nanotechnology)

Journal Articles

Beamline test of a transition-edge-sensor spectrometer in preparation for kaonic-atom measurements

Hashimoto, Tadashi*; Tanida, Kiyoshi; 49 of others*

IEEE Transactions on Applied Superconductivity, 27(4), p.2100905_1 - 2100905_5, 2017/06

 Times Cited Count:12 Percentile:54.67(Engineering, Electrical & Electronic)

Journal Articles

Status report on the JAERI tandem accelerator facility

Matsuda, Makoto; Takeuchi, Suehiro; Tsukihashi, Yoshihiro; Horie, Katsuzo; Ouchi, Isao; Hanashima, Susumu; Abe, Shinichi; Ishizaki, Nobuhiro; Tayama, Hidekazu; Nakanoya, Takamitsu; et al.

Dai-17-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.1 - 4, 2004/00

no abstracts in English

Journal Articles

A Bright prospect of low aspect ratio tokamaks toward a power reactor

Nishio, Satoshi

Denki Gakkai Purazuma Kenkyukai Shiryo (PST-03-37), p.1 - 6, 2003/10

no abstracts in English

Journal Articles

Conceptual design of tokamak high power reactor (A-SSTR2)

Nishio, Satoshi; Tobita, Kenji; Ushigusa, Kenkichi; Konishi, Satoshi

Purazuma, Kaku Yugo Gakkai-Shi, 78(11), p.1218 - 1230, 2002/11

no abstracts in English

Journal Articles

Fusion-Tokamak

Okuno, Kiyoshi

Denki Gakkai-Shi, 122(1), P. 15, 2002/01

no abstracts in English

Journal Articles

Fusion reactor technology; Challenge to future energy

Seki, Masahiro; Hishinuma, Akimichi; Kurihara, Kenichi; Akiba, Masato; Abe, Tetsuya; Ishitsuka, Etsuo; Imai, Tsuyoshi; Enoeda, Mikio; Ohira, Shigeru; Okumura, Yoshikazu; et al.

Kaku Yugoro Kogaku Gairon; Mirai Enerugi Eno Chosen, 246 Pages, 2001/09

no abstracts in English

Journal Articles

Analysis of current after normal transition in a cable-in-conduit conductor

Koizumi, Norikiyo; Ando, Toshinari; Takahashi, Yoshikazu; Tsuji, Hiroshi; Shimamoto, Susumu*

IEEE Transactions on Applied Superconductivity, 11(1), p.2575 - 2578, 2001/03

 Times Cited Count:2 Percentile:23.34(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Conceptual design description of a CT fueler for JT-60U

Raman, R.*; Itami, Kiyoshi

Purazuma, Kaku Yugo Gakkai-Shi, 76(10), p.1079 - 1087, 2000/10

no abstracts in English

Journal Articles

Design of an energy-recovery beam line for the JAERI FEL

Shizuma, Toshiyuki; Hajima, Ryoichi; Minehara, Eisuke

Proceedings of 25th Linear Accelerator Meeting in Japan, p.53 - 55, 2000/07

no abstracts in English

Journal Articles

Analysis of JAERI FEL power stabilization

Sakaki, Hironao; Nagai, Ryoji; Yoshikawa, Hiroshi; Minehara, Eisuke

Proceedings of 25th Linear Accelerator Meeting in Japan, p.261 - 263, 2000/07

no abstracts in English

JAEA Reports

Feasibility study on magnetic separation

Oda, Yoshihiro; Funasaka, Hideyuki; Wang, X.*; Obara, Kenji*; Wada, Hitoshi*

JNC TY8400 2000-002, 47 Pages, 2000/03

JNC-TY8400-2000-002.pdf:2.53MB

no abstracts in English

Journal Articles

Development of a 13T-640MJ superconducting pulsed coil for fusion machines

Ando, Toshinari; Hiyama, Tadao; Takahashi, Yoshikazu; Nakajima, Hideo; Kato, Takashi; Isono, Takaaki; Sugimoto, Makoto; Kawano, Katsumi; Koizumi, Norikiyo; Nunoya, Yoshihiko; et al.

Denki Gakkai Rombunshi, B, 120(3), p.449 - 456, 2000/03

no abstracts in English

Journal Articles

The JAERI superconducting linac based FEL

Shizuma, Toshiyuki; Minehara, Eisuke; Nishimori, Nobuyuki; Nagai, Ryoji; Hajima, Ryoichi; Sawamura, Masaru; Kikuzawa, Nobuhiro; Yamauchi, Toshihiko

Proceedings of 20th International Linac Conference (CD-ROM), 3 Pages, 2000/00

no abstracts in English

Journal Articles

Neutron scattering experiments at high pressure on a heavy fermion superconductor UPd$$_{2}$$Al$$_{3}$$

Homma, Tetsuo; Haga, Yoshinori; Yamamoto, Etsuji; Metoki, Naoto; Koike, Yoshihiro; Osakabe, Toyotaka; Onuki, Yoshichika

Journal of the Physical Society of Japan, 68(12), p.4047 - 4048, 1999/12

 Times Cited Count:1 Percentile:16.25(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Limiting and breaking of fault current on fusion devices

Matsuzaki, Yoshimi

Denki Gakkai Gijutsu Hokoku, (709), p.54 - 58, 1999/01

no abstracts in English

Journal Articles

Development of high performance Nb$$_{3}$$Sn superconducting wire and large current conductor

Isono, Takaaki; Nunoya, Yoshihiko; Matsui, Kunihiro; Sugimoto, Makoto; Yoshida, Kiyoshi; Nishi, Masataka; Takahashi, Yoshikazu; Ando, Toshinari; Tsuji, Hiroshi; Shimamoto, Susumu*

Denki Gakkai Rombunshi, B, 119(11), p.1263 - 1269, 1999/00

no abstracts in English

160 (Records 1-20 displayed on this page)