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Journal Articles

Development of compact high field pulsed magnet system for new sample environment equipment at MLF in J-PARC

Watanabe, Masao; Nojiri, Hiroyuki*; Ito, Shinichi*; Kawamura, Seiko; Kihara, Takumi*; Masuda, Takatsugu*; Sahara, Takuro*; Soda, Minoru*; Takahashi, Ryuta

JPS Conference Proceedings (Internet), 25, p.011024_1 - 011024_5, 2019/03

Recently, neutron scattering experiments have been rapidly progressed under high magnetic field. In the J-PARC, proto-type compact pulse magnet system with the power supply, the coil and the sample stick has been developed. Basic specifications of the power supply are as follows; maximum charged voltage with capacitor is 2 kV, maximum current is 8 kA, repetition rate is a pulse per several minutes and pulse duration is several msec. Maximum magnetic field in the coil is more than 30 Tesla. The sample stick is designed for Orange-Cryostat. In this presentation, We report the details of the pulsed magnet system and the performance of it on neutron scattering experiments at MLF beam line (HRC).

Journal Articles

New injection bump power supply of the J-PARC RCS

Takayanagi, Tomohiro; Hayashi, Naoki; Ueno, Tomoaki*; Horino, Koki; Okabe, Kota; Kinsho, Michikazu; Irie, Yoshiro*

Proceedings of 6th International Particle Accelerator Conference (IPAC '15) (Internet), p.2908 - 2910, 2015/06

The new injection bump power supply for the shift bump (SB) magnet of the beam injection system at the J-PARC (Japan Proton Accelerator Research Complex) 3-GeV RCS (Rapid-Cycling Synchrotron) has been developed and manufactured. The power capacity of the new power supply demand doubling with the injection beam energy upgrading of the LIANC (Linear Accelerator) from 181 MeV to 400 MeV. Furthermore, the low ripple noise on the output current was required to prevent the occurrence of the resonation between the excitation magnetic field and the RF shield loop covered the ceramics duct at the magnet. The power supply newly adopted a capacitor commutation method to form the trapezoid waveform pattern (bump waveform). This paper reports characteristic about the new shift bump power supply.

Journal Articles

Type tests of JT-60SA Fast Plasma Position Control Coil (FPPCC) power supplies

Zito, P.*; Lampasi, A.*; Novello, L.*; Matsukawa, Makoto; Shimada, Katsuhiro; Portesine, M.*; Fasce, F.*; Cinarelli, D.*; Dorronsoro, A.*; Vian, D.*

Proceedings of IEEE 15th International Conference on Environment and Electrical Engineering (IEEE-EEEIC 2015), p.156 - 160, 2015/06

Journal Articles

Development of a dc 1MV power supply technology for NB injectors

Watanabe, Kazuhiro; Kashiwagi, Mieko; Kawashima, Shuichi*; Ono, Yoichi*; Yamashita, Yasuo*; Yamazaki, Choji*; Hanada, Masaya; Inoue, Takashi; Taniguchi, Masaki; Okumura, Yoshikazu; et al.

Nuclear Fusion, 46(6), p.S332 - S339, 2006/06

 Times Cited Count:24 Percentile:65.26(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Application of NBI technologies

Watanabe, Kazuhiro; Ando, Yasunori*

Purazuma, Kaku Yugo Gakkai-Shi, 81(10), p.792 - 797, 2005/10

no abstracts in English

Journal Articles

A New intelligent coil current control system combined with a synchronous generator and a diode rectifier

Shimada, Katsuhiro; Omori, Yoshikazu; Furukawa, Hiroshi*; Terakado, Tsunehisa; Matsukawa, Makoto; Kurihara, Kenichi

Proceedings of International Conference on Electrical Engineering 2004 (ICEE 2004), p.777 - 781, 2004/00

We developed a new coil current control system for a power supply that consists of a synchronous generator and diode rectifiers. Test results are reported for the toroidal field coil power supply of JT-60, a world-class tokamak-type fusion device. This coil current control system has been designed to improve the control flexibility of the plasma discharge, and to introduce new functions. A state feedback control method is adopted to control coil current. Limit functions for the generator field current, the generator output voltage, and the toroidal field coil voltage have been added to the original coil current control system. Moreover, the abnormal state detection function of a coil is implemented for safety. The developed new intelligent control system has been tested and its performance was confirmed.

Journal Articles

CS model coil test facility

Kato, Takashi; Nakajima, Hideo; Isono, Takaaki; Hamada, Kazuya; Kawano, Katsumi; Sugimoto, Makoto; Nunoya, Yoshihiko; Koizumi, Norikiyo; Matsui, Kunihiro; Oshikiri, Masayuki*; et al.

Teion Kogaku, 36(6), p.315 - 323, 2001/06

no abstracts in English

JAEA Reports

Design of neutral beam injection power supplies for ITER

Watanabe, Kazuhiro; Higa, Osamu*; Kawashima, Shuichi*; Okumura, Yoshikazu; Ono, Yoichi*; Tanaka, Masanobu*

JAERI-Tech 2000-033, p.72 - 0, 2000/03

JAERI-Tech-2000-033.pdf:2.72MB

no abstracts in English

Journal Articles

Operation and control of JT-60U ECRF system

Shinozaki, Shinichi; Shimono, Mitsugu; Terakado, Masayuki; Anno, Katsuto; Hiranai, Shinichi; Ikeda, Yoshitaka; Ikeda, Yukiharu; Imai, Tsuyoshi; Kasugai, Atsushi; Moriyama, Shinichi; et al.

Proceedings of the 18th IEEE/NPSS Symposium on Fusion Engineering (SOFE '99), p.403 - 406, 1999/10

no abstracts in English

Journal Articles

The JA home team design of the ITER ECRF power supply system

Tsuneoka, Masaki; Imai, Tsuyoshi; E.Bowles*; I.Benfatto*; *; *

Fusion Engineering and Design, 45(2), p.197 - 207, 1999/00

 Times Cited Count:1 Percentile:13.53(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of a high performance core snubber for high power neutral beam injectors

Watanabe, Kazuhiro; *; *; *; *

Review of Scientific Instruments, 69(12), p.4136 - 4141, 1998/12

 Times Cited Count:28 Percentile:84.65(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Design of ITER NBI power supply system

Watanabe, Kazuhiro; Higa, Osamu*; Kawashima, Shuichi*; Ohara, Yoshihiro; Okumura, Yoshikazu; Ono, Yoichi*; Tanaka, Masanobu*; *

JAERI-Tech 97-034, 106 Pages, 1997/07

JAERI-Tech-97-034.pdf:2.58MB

no abstracts in English

Journal Articles

Development of d.c.power supply for gyrotron with energy recovery system

Tsuneoka, Masaki; *; Sakamoto, Keishi; Kasugai, Atsushi; Imai, Tsuyoshi; Nagashima, Takashi; *; *; *; *; et al.

Fusion Engineering and Design, 36(4), p.461 - 469, 1997/00

 Times Cited Count:22 Percentile:84.32(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of a general tokamak circuit simulation program and some application results to the JT-60 power supply system

Matsukawa, Makoto; Aoyagi, Tetsuo; Miura, Yushi

Proc. of Power Conversion Conf. -Nagaoka 1997, 1, p.457 - 462, 1997/00

no abstracts in English

Journal Articles

Surge suppression in a power supply of a neutral beam injector

Watanabe, Kazuhiro; Ito, Takao*; Matsuoka, Mamoru

Purazuma, Kaku Yugo Gakkai-Shi, 69(10), p.1229 - 1241, 1993/10

no abstracts in English

Journal Articles

Future potential of nuclear heat utilization in energy, economy and environment

; Sato, Osamu; ; *

Nucl. Eng. Des., 136, p.211 - 217, 1992/00

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Conceptual design of SC magnet system for ITER, IV; Power supply and cryogenic system

Kato, Takashi; Yoshida, Kiyoshi; *; Okawa, Yoshinao

JAERI-M 91-123, 59 Pages, 1991/08

JAERI-M-91-123.pdf:1.09MB

no abstracts in English

Journal Articles

Future potential of nuclear heat utilization in energy, economy and environment

; Sato, Osamu; ; *

Proc. for the Seminar on 10th Int. Conf. SMiRT, p.VI.6.1 - VI.6.8, 1989/00

no abstracts in English

JAEA Reports

IAEA INTOR Workshop Report, Group 8; Power Supply and Transfer

; *; ; ;

JAERI-M 8511, 63 Pages, 1979/10

JAERI-M-8511.pdf:1.92MB

no abstracts in English

Oral presentation

Manufacturing and tests of 1MV power supply for ITER NBTF

Kashiwagi, Mieko; Watanabe, Kazuhiro; Yamanaka, Haruhiko; Maejima, Tetsuya; Terunuma, Yuto*; Oda, Yuki; Tobari, Hiroyuki; Dairaku, Masayuki; Hanada, Masaya

no journal, , 

Toward the neutral beam (NB) system of ITER, the prototype of the ITER NB is under construction in the NB test facility (NBTF), Padova, Italy. For the NBTF, Japan Atomic Energy Agency manufactures, transports and constructs the 1MV high voltage power supply components to generate 1 MV, 60 A for 3600 s, which consist of fourteen components such as five DC generators and transmission lines with 100 m in a length. The manufacturing of the power supply components is in progress as scheduled. Three of five DCGs and 80% of the transmission lines have been completed. In the factory, the voltage holding test including the margin of 20% were successfully demonstrated. Then, these are under transportation to the NBTF. The construction work is started from Dec/2015 as scheduled. As the one of R&Ds results, the development of the water choke made of fiber reinforced plastic (FRP) is reported, which is the alternative of the conventional ceramic.

26 (Records 1-20 displayed on this page)