A demonstration of magnetic field optimization in LHD

A demonstration of magnetic field optimization in LHD
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LHD 中磁场优化的演示

DOI：
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发表时间：
2002
期刊：
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影响因子：
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通讯作者：
M. Fujiwara
M. Fujiwara
中科院分区：
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文献类型：
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作者：
S. Murakami;H. Yamada;A. Wakasa;M. Sasao;M. Isobe;T. Ozaki;P. Goncharov;T. Saida;J. Lyon;M. Osakabe;K. Narihara;Kenji Tanaka;H. Inagaki;S. Morita;K. Ida;J. Miyazawa;H. Idei;K. Ikeda;S. Kubo;R. Kumazawa;T. Mutoh;Y. Oka;K. Saito;T. Seki;Y. Takeiri;Y. Torii;K. Tumori;T. Watari;K. Watanabe;H. Funaba;M. Yokoyama;H. Maassberg;C. Beidler;K. Itoh;O. Kaneko;A. Komori;T. Akiyama;N. Ashikawa;M. Emoto;M. Goto;K. Kawahata;H. Kawazome;K. Khlopenkov;T. Kobuchi;A. Kostrioukov;Y. Liang;S. Masuzaki;T. Minami;T. Morisaki;S. Muto;Y. Nagayama;Y. Nakamura;H. Nakanishi;Y. Narushima;K. Nishimura;N. Noda;T. Notake;H. Nozato;S. Ohdachi;N. Ohyabu;B. Peterson;A. Sagara;S. Sakakibara;R. Sakamoto;Kuninori Sato;M. Sato;T. Shimozuma;M. Shoji;H. Suzuki;N. Takeuchi;N. Tamura;K. Toi;T. Tokuzawa;Y. Xu;I. Yamada;S. Yamamoto;T. Yamamoto;Y. Yoshimura;M. Yoshinuma;M. Tanaka;S. Okamura;S. Yoshimura;K. Nagaoka;T. Satow;S. Imagawa;T. Mito;I. Ohtake;T. Uda;K. Ohkubo;S. Sudo;K. Yamazaki;K. Matsuoka;O. Motojima;Y. Hamada;M. Fujiwara

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通过改变LHD中的磁轴位置，找到了新经典输运和高能粒子约束的优化组态，达到了所谓的“高级恒星加速器”的典型水平。为了研究磁场优化对热等离子体输运和高能粒子约束的影响，研究了低碰撞LHD等离子体中的电子热输运和NbI束流离子分布。优化组态的电子温度较高，输运分析表明，在离子根径向电场条件下，新经典输运对电子热输运有相当大的影响。此外，还观察到了较高的高能离子分布，表明高能粒子约束的改善。这些结果支持了未来非轴对称结构磁场优化电抗器的设计。
An optimized configuration of the neoclassical transport and the energetic particle confinement to a level typical of so-called “advanced stellarators” is found by shifting the magnetic axis position in LHD. Electron heat transport and NBI beam ion distribution are investigated in low-collisionality LHD plasma in order to study the magnetic field optimization effect on the thermal plasma transport and the energetic particle confinement. A higher electron temperature is obtained in the optimized configuration, and the transport analysis suggests a considerable effect of neoclassical transport on the electron heat transport assuming the ion-root level of radial electric field. Also a higher energetic ion distribution of NBI beam ions is observed showing the improvement of the energetic particle confinement. These obtained results support a future reactor design by magnetic field optimization in a non-axisymmetric configuration.