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Suzuki, Seiya; Nemoto, Yoshihiro*; Shiiki, Natsumi*; Nakayama, Yoshiko*; Takeguchi, Masaki*
Annalen der Physik, 535(9), p.2300122_1 - 2300122_12, 2023/09
Times Cited Count：0 Percentile：0.00(Physics, Multidisciplinary)Hoshino, Katsumichi; Yamamoto, Takumi; Tamai, Hiroshi; Oasa, Kazumi; Kawashima, Hisato; Miura, Yukitoshi; Ogawa, Toshihide; Shoji, Teruaki*; Shibata, Takatoshi; Kikuchi, Kazuo; et al.
Fusion Science and Technology, 49(2), p.139 - 167, 2006/02
Times Cited Count：2 Percentile：16.77(Nuclear Science & Technology)The main results obtained by the various heating and current drive systems, external coil system and divertor bias system are reviewed from the viewpoint of the advanced active control of the tokamak plasma. Also, the features of each system are described. The contribution of the JFT-2M in these areas are summarized.
Moriyama, Shinichi; Shinozaki, Shinichi
Japanese Journal of Applied Physics, Part 1, 44(8), p.6224 - 6229, 2005/08
Times Cited Count：1 Percentile：4.62(Physics, Applied)The control system of RF heating system in JT-60U has been improved with a concept of dispersion processing and featuring a real time waveform shaping method. It is proper that the brand-new, dispersion processing system has higher performance and reliability than old single processor system before modification, however it is worthy of mention that improvement on operation roll sharing, using the real time waveform shaping, has enabled more efficient and smooth operation. The typical roll sharing is that a simple rectangular waveform of the RF heating power is set by the experiment operator, and the waveform is re-shaped with the parameter set by the RF operator who knows deeply the condition of the RF system at that time. The simple and flexible composition of the new control system will also enable further improvement of hardware to enhance plasma performance that is inevitable to the devices for fusion experiment.
Department of Fusion Engineering Research
JAERI-Review 2005-011, 139 Pages, 2005/03
JAERI-Review-2005-011.pdf:11.95MB
no abstracts in English
Inoue, Takashi; Sakamoto, Keishi
Nihon Genshiryoku Gakkai-Shi, 47(2), p.120 - 127, 2005/02
no abstracts in English
Fujii, Tsuneyuki; Seki, Masami; Moriyama, Shinichi; Terakado, Masayuki; Shinozaki, Shinichi; Hiranai, Shinichi; Shimono, Mitsugu; Hasegawa, Koichi; Yokokura, Kenji; JT-60 Team
Journal of Physics; Conference Series, 25, p.45 - 50, 2005/00
The JT-60U electron cyclotron range of frequency (ECRF) is utilized to realize high performance plasma. Its output power is 4 MW at 110 GHz. By controlling the anode voltage of the gyrotron used in the JT-60U ECRF heating system, the gyrotoron output can be controlled. Then, the anode voltage controller was developed to modulate the injected power into plasmas. This low cost controller achieved the modulation frequency 12 - 500 Hz at 0.7 MW. This controller also extended the pulse width from 5s to 16 s at 0.5 MW. For these long pulses, temperature rise of the DC break made of Alumina ceramics is estimated. Its maximum temperature becomes 
140 deg. From the analysis of this temperature rise, DC break materials should be changed to low loss materials for the objective pulse width of 30 s. The stabilization of neoclassical tearing mode (NTM) was demonstrated by ECRF heating using the real-time system in which the ECRF beams are injected to the NTM location predicted from ECE measurement every 10 ms.
Teshigawara, Makoto*; Watanabe, Noboru*; Takada, Hiroshi; Nakashima, Hiroshi; ; Oyama, Yukio; Kosako, Kazuaki*
JAERI-Research 99-010, 16 Pages, 1999/02
JAERI-Research-99-010.pdf:0.86MB
no abstracts in English
ITER Physics Expert Group on Energetic Particles, Heating and Current Drive
Nuclear Fusion, 39(12), p.2495 - 2539, 1999/00
no abstracts in English
C.G.Liu*; Yamagiwa, Mitsuru; S.J.Qian*
Physics of Plasmas, 4(8), p.2788 - 2790, 1997/08
Times Cited Count：3 Percentile：12.82(Physics, Fluids & Plasmas)no abstracts in English
C.Liu*; Yamagiwa, Mitsuru; S.Qian*
JAERI-Research 96-068, 17 Pages, 1997/01
JAERI-Research-96-068.pdf:0.84MB
no abstracts in English
Kondoh, Takashi; Kimura, Haruyuki; Kusama, Yoshinori; Morioka, Atsuhiko; Moriyama, Shinichi; Saigusa, Mikio; Nagashima, Keisuke; Yoshino, Ryuji; Harano, Hideki*
Purazuma, Kaku Yugo Gakkai-Shi, 72(12), p.1397 - 1405, 1996/12
no abstracts in English
Yamagiwa, Mitsuru
Physics of Plasmas, 1(1), p.205 - 207, 1994/01
Times Cited Count：4 Percentile：26.29(Physics, Fluids & Plasmas)no abstracts in English
He fusion yield with a Fokker-Planck codeYamagiwa, Mitsuru; Kishimoto, Yasuaki; Fujii, Tsuneyuki; Kimura, Haruyuki
Nuclear Fusion, 33(3), p.493 - 500, 1993/00
Times Cited Count：6 Percentile：31.03(Physics, Fluids & Plasmas)no abstracts in English
Moriyama, Shinichi; ; Fujii, Tsuneyuki; ; ; Terakado, Masayuki; Kimura, Haruyuki; Saigusa, Mikio; Nagashima, Takashi; Ota, Mitsuru; et al.
Fusion Engineering and Design, 19, p.41 - 52, 1992/00
Times Cited Count：11 Percentile：70.05(Nuclear Science & Technology)no abstracts in English
He fusion yield with higher harmonic ICRF heating of He beamsYamagiwa, Mitsuru; Kimura, Haruyuki
Nuclear Fusion, 31(8), p.1519 - 1526, 1991/00
Times Cited Count：4 Percentile：28.35(Physics, Fluids & Plasmas)no abstracts in English
fusion yield in higher harmonic ICRF heated plasmaYamagiwa, Mitsuru; Kimura, Haruyuki; Takizuka, Tomonori; Fujii, Tsuneyuki
Proc. of the 17th EPS Conf. on Controlled Fusion and Plasma Heating, p.1007 - 1010, 1990/00
no abstracts in English
Yamagiwa, Mitsuru; Kimura, Haruyuki; Takizuka, Tomonori
Nuclear Fusion, 29(10), p.1799 - 1806, 1989/10
Times Cited Count：1 Percentile：3.09(Physics, Fluids & Plasmas)no abstracts in English
Nakajima, Kunihiko*; ;
JAERI-M 87-154, 106 Pages, 1987/09
no abstracts in English
Hiroki, S.; ; ; Murakami, Yoshio
Shinku, 30(1), p.14 - 21, 1987/01
no abstracts in English
JAERI-M 85-205, 214 Pages, 1986/01
no abstracts in English
