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Journal Articles

Response of toroidal rotation velocity to electron cyclotron wave injection in JT-60U

Sakamoto, Yoshiteru; Ide, Shunsuke; Yoshida, Maiko; Koide, Yoshihiko; Fujita, Takaaki; Takenaga, Hidenobu; Kamada, Yutaka

Plasma Physics and Controlled Fusion, 48(5A), p.A63 - A70, 2006/05

 Times Cited Count:33 Percentile:23.64(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Temporal variation of density fluctuation and transport in reversed shear plasmas on JT-60U

Takenaga, Hidenobu; Oyama, Naoyuki; Bruskin, L. G.*; Mase, Atsushi*; Takizuka, Tomonori; Fujita, Takaaki

Plasma Physics and Controlled Fusion, 48(5A), p.A401 - A408, 2006/05

 Times Cited Count:6 Percentile:76.65(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

MHD instabilities leading to disruptions in low beta JT-60U reversed shear plasmas

Takechi, Manabu; Fujita, Takaaki; Ishii, Yasutomo; Ozeki, Takahisa; Suzuki, Takahiro; Isayama, Akihiko; JT-60 Team

Nuclear Fusion, 45(12), p.1694 - 1699, 2005/12

 Times Cited Count:6 Percentile:77.14(Physics, Fluids & Plasmas)

High performance reversed shear discharges with strong internal transport barrier (ITB) and flat pressure profile in the plasma core region disrupt frequently even with low beta. We analyzed MHD instabilities leading to low beta disruption with measuring fluctuations and current profile with MSE measurement. We mainly observed two type of disruptions. One is the disruption without precursor at $$qeff~integer$$. The other is the disruption with n=1 precursor of $$gamma$$$$>$$100 ms. To explain these characteristics of disruption, we introduce the simple model such as, disruption occurs when the both MHD instabilities at plasma surface and at safety factor being equal to surface mode are unstable. This simple model can explain almost all observed disruption by two process. One is the surface mode triggered disruption, which occurs when qeff change, corresponding q surface at ITB layer changes discretely. The other is the internal mode triggered disruption, which occurs when corresponding q surface become unstable gradually.

Journal Articles

Numerical simulation on current spike behaviour of JT-60U disruptive plasmas

Takei, Nahoko; Nakamura, Yukiharu; Tsutsui, Hiroaki*; Yoshino, Ryuji; Kawano, Yasunori; Ozeki, Takahisa; Tobita, Kenji; Iio, Shunji*; Shimada, Ryuichi*; Jardin, S. C.*

Plasma Physics and Controlled Fusion, 46(12), p.1815 - 1830, 2004/12

 Times Cited Count:1 Percentile:96.82(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Formation of advanced tokamak plasmas without the use of an ohmic-heating solenoid

Shiraiwa, Shunichi*; Ide, Shunsuke; Ito, Satoshi*; Mitarai, Osamu*; Naito, Osamu; Ozeki, Takahisa; Sakamoto, Yoshiteru; Suzuki, Takahiro; Takase, Yuichi*; Tanaka, Shigetoshi*; et al.

Physical Review Letters, 92(3), p.035001_1 - 035001_4, 2004/01

 Times Cited Count:42 Percentile:17.06(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Relationship between particle and heat transport in JT-60U plasmas with internal transport barrier

Takenaga, Hidenobu; Higashijima, Satoru; Oyama, Naoyuki; Bruskin, L. G.; Koide, Yoshihiko; Ide, Shunsuke; Shirai, Hiroshi; Sakamoto, Yoshiteru; Suzuki, Takahiro; Hill, K. W.*; et al.

Nuclear Fusion, 43(10), p.1235 - 1245, 2003/10

 Times Cited Count:66 Percentile:11(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

TSC modelling of current ramp scenarios with ITB-Generated bootstrap currents in JT-60U reversed shear discharges

Nakamura, Yukiharu; Tsutsui, Hiroaki*; Takei, Nahoko*; Sakamoto, Yoshiteru; Fujita, Takaaki; Sugihara, Masayoshi; Ozeki, Takahisa; Tobita, Kenji; Konishi, Satoshi; Iio, Shunji*; et al.

Europhysics Conference Abstracts, 27A, 4 Pages, 2003/00

no abstracts in English

Journal Articles

Transport study in reactor-relevant regime on JT-60U towards advanced steady-state tokamak operation

Takenaga, Hidenobu; JT-60 Team

Proceedings of 30th EPS Conference on Controlled Fusion and Plasma Physics (CD-ROM), 4 Pages, 2003/00

no abstracts in English

Journal Articles

Energy confinement scaling for reversed-shear plasmas with internal transport barrier in JT-60U

Takizuka, Tomonori; Sakamoto, Yoshiteru; Fukuda, Takeshi; Fujita, Takaaki; Kamada, Yutaka; Suzuki, Takahiro; Ide, Shunsuke; Shirai, Hiroshi

Plasma Physics and Controlled Fusion, 44(5A), p.A423 - A428, 2002/05

 Times Cited Count:13 Percentile:57.04(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Dynamics and interplay of L-H-L transitions and ITB events in reversed shear plasmas with internal barrieres in JT-60U

Neudatchin, S. V.; Takizuka, Tomonori; Shirai, Hiroshi; Fujita, Takaaki; Isayama, Akihiko; Kamada, Yutaka; Koide, Yoshihiko; Suzuki, Takahiro; Takeji, Satoru

Plasma Physics and Controlled Fusion, 44(5A), p.A383 - A389, 2002/05

 Times Cited Count:13 Percentile:57.04(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Fusion $$gamma$$-ray measurements for D-$$^{3}$$He experiments in JT-60U

Nishitani, Takeo; Tobita, Kenji; Kusama, Yoshinori; Shibata, Yasunari*

Review of Scientific Instruments, 72(1), p.877 - 879, 2001/01

 Times Cited Count:8 Percentile:51.63(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Helium exhaust and forced flow effects with both-leg pumping in W-shaped divertor of JT-60U

Sakasai, Akira; Takenaga, Hidenobu; Higashijima, Satoru; Kubo, Hirotaka; Nakano, Tomohide; Tamai, Hiroshi; Sakurai, Shinji; Akino, Noboru; Fujita, Takaaki; Asakura, Nobuyuki; et al.

IAEA-CN-77 (CD-ROM), 9 Pages, 2001/00

no abstracts in English

Journal Articles

Active control of internal transport barrier and confinement database in JT-60U reversed shear plasma

Sakamoto, Yoshiteru; Takizuka, Tomonori; Shirai, Hiroshi; Fujita, Takaaki; Kamada, Yutaka; Ide, Shunsuke; Fukuda, Takeshi; Koide, Yoshihiko

Journal of Plasma and Fusion Research SERIES, Vol.4, p.249 - 252, 2001/00

no abstracts in English

Journal Articles

Role of radial electric field and plasma rotation in the time evolution of internal transport barrier in JT-60U

Shirai, Hiroshi; Kikuchi, Mitsuru; Takizuka, Tomonori; Fujita, Takaaki; Koide, Yoshihiko; Sakamoto, Yoshiteru; Naito, Osamu; Hatae, Takaki; Isayama, Akihiko; Kamada, Yutaka; et al.

Plasma Physics and Controlled Fusion, 42(suppl.5A), p.A109 - A115, 2000/05

 Times Cited Count:27 Percentile:34.2(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Particle confinement and transport in JT-60U

Takenaga, Hidenobu; Nagashima, Keisuke; Sakasai, Akira; Asakura, Nobuyuki; Shimizu, Katsuhiro; Kubo, Hirotaka; Higashijima, Satoru; Oikawa, Toshihiro; Shirai, Hiroshi; Fujita, Takaaki; et al.

Nuclear Fusion, 39(11Y), p.1917 - 1928, 1999/11

 Times Cited Count:21 Percentile:41.67(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Steady-state exhaust of helium ash in the W-shaped divertor of JT-60U

Sakasai, Akira; Takenaga, Hidenobu; Hosogane, Nobuyuki; Kubo, Hirotaka; Sakurai, Shinji; Akino, Noboru; Fujita, Takaaki; Higashijima, Satoru; Tamai, Hiroshi; Asakura, Nobuyuki; et al.

Fusion Energy 1998 (CD-ROM), 8 Pages, 1999/00

no abstracts in English

Journal Articles

Impurity transport in reversed shear and ELMy H-mode plasmas of JT-60U

Takenaga, Hidenobu; Sakasai, Akira; Koide, Yoshihiko; Sakamoto, Yoshiteru; Kubo, Hirotaka; Higashijima, Satoru; Oikawa, Toshihiro; Shirai, Hiroshi; Fujita, Takaaki; Kamada, Yutaka

Purazuma, Kaku Yugo Gakkai-Shi, 75(8), p.952 - 966, 1999/00

no abstracts in English

Journal Articles

Particle confinement and transport in JT-60U

Takenaga, Hidenobu; Nagashima, Keisuke; Sakasai, Akira; Asakura, Nobuyuki; Shimizu, Katsuhiro; Kubo, Hirotaka; Higashijima, Satoru; Oikawa, Toshihiro; Fujita, Takaaki; Kamada, Yutaka; et al.

Fusion Energy 1998, Vol.2, p.749 - 752, 1998/10

no abstracts in English

Journal Articles

Determination of particle transport coefficients in reversed shear plasma of JT-60U

Takenaga, Hidenobu; Nagashima, Keisuke; Sakasai, Akira; Oikawa, Toshihiro; Fujita, Takaaki

Plasma Physics and Controlled Fusion, 40(2), p.183 - 190, 1998/00

 Times Cited Count:37 Percentile:24.53(Physics, Fluids & Plasmas)

no abstracts in English

19 (Records 1-19 displayed on this page)
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