Matsuyama, A., Isaev, M.Yu., Watanabe, K.Y., Hanatani, K., Suzuki, Y., Nakajima, N., ...
To evaluate the bootstrap current in nonaxisymmetric toroidal plasmas quantitatively, a deltaf Monte Carlo method is incorporated into the moment approach. From the drift-kinetic equation with the...
Development of net-current free heliotron plasmas in the Large Helical Device (2009)
Komori, A., Yamada, H., Sakakibara, S., Kaneko, O., Kawahata, K., Mutoh, T., ...
Three-dimensional anisotropic pressure free boundary equilibria (2009)
Cooper, W. A., Hirshman, S. P., Merkel, P., Graves, J. P., Kisslinger, J., Wobig, H. F. G., ...
Status of the International Stellarator/Heliotron Profile Database (2008)
Dinklage, A., Ascasibar, E., Beidler, C. D., Brakel, R., Burhenn, R., Castejon, F., ...
Extensions of the International Stellarator Database by High-b Data from W7-AS and LHD (2008)
Weller, A., Watanabe, K. Y., Sakakibara, S., Dinklage, A., Funaba, H., Geiger, J., ...
Applications of HINT2 code to stellarator/helitron (2008)
Suzuki, Y., Nakajima, N., Geiger, J., Yamamoto, S., Watanabe, K. Y., Sakakibara, S., ...
3D Plasma Equilibrium and Stability with Hot Particle Anisotropic Pressure (2008)
Cooper, A., Graves, J. P., Hirshman, S. P., Merkel, P., Kisslinger, J., Wobig, H. F. G., ...
MHD study of the reactor-relevant high-beta regime in the Large Helical Device (2008)
Sakakibara, S., Watanabe, K. Y., Suzuki, Y., Narushima, Y., Ohdachi, S., Nakajima, N., ...
Status of the International Stellarator/Heliotron Profile Database (2008)
Kus, A., Pretty, D., Ascasibar, E., Beidler, C. D., Blackwell, B. D., Brakel, R., ...
3D Plasma Equilibrium and Stability with Hot Particle Anisotropic Pressure (2008)
Cooper, W.A., Graves, J.P., Hirshman, S.P., Merkel, P., Kisslinger, J., Wobig, H.F.G., ...
LHD Bootstrap Current Coefficient Calculations with the VENUS+δ f code (2008)
Isaev, M.Yu, Watanabe, K.Y., Yokoyama, M., Ohyabu, N., Beidler, C.D., Maassberg, H., ...
3D Plasma Equilibrium and Stability with Hot Particle Pressure Anisotropy (2008)
Cooper, W.A., Graves,J.P., Hirshman, S.P., Merkel, P., Kisslinger, J., Wobig, H., ...
Characteristics of Magnetohydrodynamics of IDB Plasma in LHD (2008)
Narushima, Y., Watanabe, K.Y., Sakamoto, R., Suzuki, Y., Sakakibara, S., Ohdachi, S., ...
MHD Stability Analysis of IDB Plasma in LHD (2008)
Narushima, Y., Watanabe, K.Y., Sakamoto, R., Yamada, I., Narihara, K., Suzuki, Y., ...
K. Yamazaki, H. Yamada, K. Y. Watanabe, K. Nishimura, S. Yamaguchi, M. Shoji, ...
The world’s largest superconducting helical fusion facility, the Large Helical Device (LHD), is in the final stage of the 8-year construction schedule at the National Institute for Fusion Science...
Physical model assessment of the energy confinement time scaling in stellarators (2007)
Dinklage, A., Maaßberg, H., Preuss, R., Turkin, Yu., Yamada, H., Ascasibar, E., ...
Physical model assessment of the energy confinement time scaling in stellarators (2007)
Dinklage, A., Maaßberg, H., Preuss, R., Turkin, Y., Yamada, H., Ascasibar, E., ...
Fluid Plasma Stability in Stellarators with Anisotropic Energetic Species (2007)
Cooper, W.A., Graves, J.P., Jucker, M., Watanabe, K.Y., Narushima, Y.
3-D ideal MHD stability of super dense core plasma in LHD (2007)
Narushima, Y., Watanabe, K.Y., Sakamoto, R., Suzuki, Y., Sakakibara, S., Ohdachi, S., ...
Free boundary three-dimensional anisotropic pressure equilibria (2007)
Cooper, W.A., Hirshman, S.P., Graves, J.P., Jucker, M., Kisslinger, J., Merkel, P., ...
Fluid magnetohydrodynamic stabilit in a heliotron with anisotropic fast particle species (2007)
Cooper, W. A., Graves, J. P., Jucker, M., Watanabe, K. Y., Narushima, Y., Yamaguchi, T.
The local and global fluid magnetohydrodynamic stability properties of anisotropic pressure plasmas are investigated with the Kruskal-Oberman and rigid hot particle Johnson et al energy principles. A...
Physical model assessment of the energy confinement time scaling in stellarators (2007)
Dinklage, A., Maassberg, H., Preuss, R., Irkin, Yu. A., Yamada, H., Ascasibar, E., ...
Overview of Progress in LHD Experiments (2006)
Komori, A., Morisaki, T., Mutoh, T., Sakakibara, S., Takeiri, Y., Kumazawa, R., ...
Significance of MHD Effects in Stellarator Confinement (2006)
Weller, A., Sakakibara, S., Watanabe, K.Y., Toi, K., Geiger, J., Zarnstorff, M.C., ...
Recent Progress of MHD Study in High-Beta Plasmas of LHD (2006)
Sakakibara, S., Watanabe, K. Y., Yamada, H., Narushima, Y., Yamaguchi, T., Toi, K., ...
Recent Progress of MHD Study in High-β Plasmas of LHD (2006)
Sakakibara, S., Watanabe, K. Y., Yamada, H., Narushima, Y., Yamaguchi, T., Toi, K., ...
Recent progress in Large Helical Device experiments (2006)
Komori, A., Morisaki, T., Mutoh, T., Sakakibara, S., Takeiri, Y., Kumazawa, R., ...
Significance of MHD Effects in Stellarator Confinement (2006)
Weller, A., Sakakibara, S., Watanabe, K.Y., Toi, K., Geiger, J., Zarnstorff, M.C., ...
Cooper, W. A., Graves, J. P., Tran, T. M., Gruber, R., Yamaguchi, T., Narushima, Y., ...
The three-dimensional (3-D) VMEC code has been modified to model an energetic species with a variant of a Bi-Maxwellian distribution function that satisfies the constraint B . del F-h = 0, and the...
Cooper, W. A., Graves, J. P., Hirshman, S. P., Yamaguchi, T., Narushima, Y., Okamura, S., ...
A formulation of the anisotropic pressure magnetohydrodynamic equilibrium problem for three-dimensional plasmas with imposed nested magnetic surfaces is developed based on a bi-Maxwellian model of...
Local island divertor experiments on LHD (2005)
Morisaki,T., Masuzaki,S., Komori,A., Ohyabu,N., Kobayashi,M., Feng,Y., ...
Confinement and MHD stability in the Large Helical Device (2005)
Motojima,O., Ida,K., Watanabe,K. Y., Nagayama,Y., Komori,A., Morisaki,T., ...
Overview of confinement and MHD stability in the Large Helical Device (2005)
Motojima,O., Ida,K., Watanabe,K. Y., Nagayama,Y., Komori,A., Morisaki,T., ...
This article based on the 2004 Fusion Energy Conference contributions (Vilamoura, Portugal, 1-6 November 2004)
Local island divertor experiments on LHD (2005)
Morisaki, T., Masuzaki, S., Komori, A., Ohyabu, N., Kobayashi, M., Feng, Y., ...
Confinement and MHD stability in the Large Helical Device (2005)
Motojima, O., Ida, K., Watanabe, K. Y., Nagayama, Y., Komori, A., Morisaki, T., ...
Overview of confinement and MHD stability in the Large Helical Device (2005)
Motojima, O., Ida, K., Watanabe, K. Y., Nagayama, Y., Komori, A., Morisaki, T., ...
Effects of global MHD instability on operational high beta-regime in LHD (2005)
Watanabe, K. Y., Sakakibara, S., Narushima, Y., Funaba, H., Narihara, K., Tanaka, K., ...
In the Large Helical Device (LHD), the highest operational averaged beta value has been expanded from 3.2% to 4% in the last 2 years by increasing the heating capability and exploring a new magnetic...
Cooper, W. A., Hirshman, S. P., Yamaguchi, T., Narushima, Y., Okamura, S., Sakakibara, S., ...
Fixed boundary three-dimensional anisotropic pressure equilibria are computed that are consistent with a family of distribution functions that load particles preferentially towards v parallel to...
Effect of Neoclassical Transport Optimization on Energetic Ion Confinement in LHD (2004)
Murakami,H., Yamada,H., Sasao,M., Isobe,M., Ozaki,T., Saida,T., ...
MHD instabilities and their effects on plasma confinement in Large Helical Device plasmas (2004)
Toi,K., Ohdachi,S., Yamamoto,S., Nakajima,N., Sakakibara,S., Watanabe,K. Y., ...
Progress of High-Beta Experiments in Stellarator/Heliotron (2004)
Watanabe,K. Y., Weller,A., Sakakibara,S., Narushima,Y., Ohdachi,S., Narihara,K., ...
Effect of Neoclassical Transport Optimization on Energetic Ion Confinement in LHD (2004)
Murakami, H., Yamada, H., Sasao, M., Isobe, M., Ozaki, T., Saida, T., ...
MHD instabilities and their effects on plasma confinement in Large Helical Device plasmas (2004)
Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...
Progress of High-Beta Experiments in Stellarator/Heliotron (2004)
Watanabe, K. Y., Weller, A., Sakakibara, S., Narushima, Y., Ohdachi, S., Narihara, K., ...
Review on the progress of the LHD experiment (2004)
Motojima, O., Yamada, H., Komori, A., Watanabe, K. Y., Mutoh, T., Takeiri, Y., ...
Recent progress in the Large Helical Device (LHD) experiment during the last 2 yr is reviewed. The LHD has been extending its operational regime toward fusion-relevant conditions while taking...
Cooper, W. A., Margalet, S. F. I., Allfrey, S. J., Kisslinger, J., Wobig, H. F. G., Narushima, Y., ...
The impact of the bootstrap current is investigated on the equilibrium properties of a two-period quasi-axisymmetric stellarator reactor with free boundary and on the corresponding ideal...
A new class of quasi-omnigenous configurations (2003)
Isaev,M. Yu., Nührenberg,J., Mikhailov,M. I., Cooper,W. A., Watanabe,K. Y., Yokoyama,M., ...
An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...
A demonstration of magnetic field optimization in LHD (2003)
Murakami,S., Yamada,H., Wakasa,A., Sasao,M., Isobe,M., Ozaki,T., ...
The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...
MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)
Toi,K., Ohdachi,S., Yamamoto,S., Nakajima,N., Sakakibara,S., Watanabe,K. Y., ...
MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...
A new class of quasi-omnigenous configurations (2003)
Isaev, M. Yu., Nührenberg, J., Mikhailov, M. I., Cooper, W. A., Watanabe, K. Y., Yokoyama, M., ...
An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...
A demonstration of magnetic field optimization in LHD (2003)
Murakami, S., Yamada, H., Wakasa, A., Sasao, M., Isobe, M., Ozaki, T., ...
The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...
MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)
Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...
MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...
Impact of heat deposition profile on global confinement of NBI heated plasmas in the LHD (2003)
Yamada, H., Murakami, S., Yamazaki, K., Kaneko, O., Miyazawa, J., Sakamoto, R., ...
Energy confinement and heat transport of net-current-free NBI heated plasmas in the large helical device (LHD) are discussed with emphasis on density and power deposition profile dependences....
Recent advances in the LHD experiment (2003)
Motojima, O., Ohyabu, N., Komori, A., Kaneko, O., Yamada, H., Kawahata, K., ...
In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted...
A new class of quasi-omnigenous configurations (2003)
Isaev, M. Y., Nuhrenberg, J., Mikhailov, M. I., Cooper, W. A., Watanabe, K. Y., Yokoyama, M., ...
An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...
Neoclassical transport optimization of LHD (2002)
Murakami,S., Wakasa,A., Maaßberg,H., Beidler,C. D., Yamada,H., Watanabe,K. Y., ...
Neoclassical transport is studied for large helical device (LHD) configurations in which the magnetic axis has been shifted radially by determining the mono-energetic transport coefficient and the...
Neoclassical transport optimization of LHD (2002)
Murakami, S., Wakasa, A., Maaßberg, H., Beidler, C. D., Yamada, H., Watanabe, K. Y., ...
Neoclassical transport is studied for large helical device (LHD) configurations in which the magnetic axis has been shifted radially by determining the mono-energetic transport coefficient and the...
Diagnostics for helical systems (2002)
Sudo, S., Mizuuchi, T., Ozaki, T., Nagayama, Y., Akiyama, T., ...
Microinstability studies for the large helical device (2002)
Rewoldt, G., Ku, L. P., Tang, W. M., Sugama, H., Nakajima, N., Watanabe, K. Y., ...
Fully kinetic assessments of the stability properties of toroidal drift modes have been obtained for cases for the large helical device (LHD). This calculation employs the comprehensive linear...
The Performance of ICRF Heated Plasmas in LHD (2001)
Watari, T., Mutoh, T., Kumazawa, R., Seki, T., Saito, K., Torii, Y., ...
Plasma and impurity transport modeling of NBI-heated LHD and helical reactor systems (2001)
Yamazaki, K., Tokar, M., Funaba, H., Peterson, B.J., Noda, N., Cooper, W.A., ...
Configuration flexibility and extended regimes in Large Helical Device (2001)
Yamada, H., Komori, A., Ohyabu, N., Kaneko, O., Kawahata, K., Watanabe, K. Y., ...
Recent experimental results in the Large Helical Device have indicated that a large pressure gradient can be formed beyond the stability criterion for the Mercier (high-n) mode. While the stability...
Observation of the "Self-Healing" of an Error Field Island in the Large Helical Device (2001)
Morisaki, T., Narihara, K., Tanaka, K., Watanabe, K. Y., Yamada, I.
Polarized Radiative Transfer of Electron Cyclotron Wave in LHD (2000)
Idei, H., Kubo, S., Shimozuma, T., Tsumori, K., Takita, Y., Kobayashi, S., ...
Recent microinstability results for nonaxisymmetric systems (2000)
Rewolt, G., Tang., W.M., Sugama, H., Nakajima, N., Watanabe, K.Y., ...
Drift mode calculations for the Large Helical Device (2000)
Rewoldt, G., Ku, L. P., Tang, W. M., Sugama, H., Nakajima, N., Watanabe, K. Y., ...
A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for a case for the Large Helical Device [A. Iiyoshi et al., Nucl. Fusion 39, 1245 (1999)]. This...
Physics design of a high-beta quasi-axisymmetric stellarator (1999)
Reiman, A., Fu, G., Hirshman, S., Ku, L., Monticello, D., Mynick, H., ...
Key physics issues in the design of a high-beta quasi-axisymmetric stellarator configuration are discussed. The goal of the design study is a compact stellarator configuration with aspect ratio...
Effect of Neoclassical Transport Optimization on Energetic Particle Confinement in LHD
Murakami,S., Yamada,H., Sasao,M., Isobe,M., Ozaki,T., Goncharov,P., ...
Yamada,H., Ida,K., Murakami,S., Watanabe,K. Y., Inagaki,S., Tanaka,K., ...
Local Island Divertor Experiments on LHD
Morisaki,T., Masuzaki,S., Komori,A., Ohyabu,N., Kobayashi,M., Feng,Y., ...
Configuration Dependence of Energetic Ion Driven Alfven Eigenmodes in the Large Helical Device
Yamamoto,S., Toi,K., Nakajima,N., Ohdachi,S., Sakakibara,S., Nührenberg,C., ...
Progress of high beta experiments in stellarator/heliotron
Watanabe,K. Y., Weller,A., Sakakibara,S., Narushima,Y., Ohdachi,S., Toi,K., ...
Murakami,S., Yamada,H., Wakasa,A., Inagaki,H., Tanaka,K., Narihara,K., ...
Significance of MHD Effects in Stellarator Confinement
Weller,A., Sakakibara,S., Watanabe,K.Y., Toi,K., Geiger,J., Zarnstorff,M. C., ...
Recent Progress of MHD Study in High-β Plasmas of LHD
Sakakibara,S., Watanabe,K. Y., Yamada,H., Narushima,Y., Yamaguchi,T., Toi,K., ...
Effect of Neoclassical Transport Optimization on Energetic Particle Confinement in LHD
Murakami, S., Yamada, H., Sasao, M., Isobe, M., Ozaki, T., Goncharov, P., ...
Local Island Divertor Experiments on LHD
Morisaki, T., Masuzaki, S., Komori, A., Ohyabu, N., Kobayashi, M., Feng, Y., ...
Physical model assessment of the energy confinement time scaling in stellarators
Dinklage, A., Maaßberg, H., Preuss, R., Turkin, Yu., Yamada, H., Ascasibar, E., ...
Configuration Dependence of Energetic Ion Driven Alfven Eigenmodes in the Large Helical Device
Yamamoto, S., Toi, K., Nakajima, N., Ohdachi, S., Sakakibara, S., Nührenberg, C., ...
Progress of high beta experiments in stellarator/heliotron
Watanabe, K. Y., Weller, A., Sakakibara, S., Narushima, Y., Ohdachi, S., Toi, K., ...
Significance of MHD Effects in Stellarator Confinement
Weller, A., Sakakibara, S., Watanabe, K.Y., Toi, K., Geiger, J., Zarnstorff, M. C., ...
Recent Progress of MHD Study in High-β Plasmas of LHD
Sakakibara, S., Watanabe, K. Y., Yamada, H., Narushima, Y., Yamaguchi, T., Toi, K., ...
Status of the International Stellarator/Heliotron Profile Database
Dinklage, A., Ascasibar, E., Beidler, C. D., Brakel, R., Burhenn, R., Castejon, F., ...
Effect of rotational transform and shear on confinement
Ascasibar, E., López-Bruna, D., Castejón, F., Tribaldos, V., Maassberg, H., Beidler, C. D., ...
Extensions of the International Stellarator Database by High-b Data from W7-AS and LHD
Weller, A., Watanabe, K. Y., Sakakibara, S., Dinklage, A., Funaba, H., Geiger, J., ...
Physical model assessment of the energy confinement time scaling in stellarators
Dinklage, A., Maaßberg, H., Preuss, R., Turkin, Yu., Yamada, H., Ascasibar, E., ...
Energy confinement scaling of stellarators/heliotrons towards reactor operation
Dinklage, A., Kus, A., Maaßberg, H, Preuss, R., Turkin, Yu. A., Yamada, H., ...