Overview of CHS Experiments
Overview of CHS Experiments
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CHS 实验概述
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通讯作者：
Fujiwara Masami
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作者：
Matsuoka Keisuke;Okamura Shoichi;Kubo Shin;Idei Hiroshi;Iguchi Harukazu;Fujisawa Akihide;Ida Katsumi;Morita Shigeru;T. Kenji;Minami Takashi;Toi Kazuo;Osakabe Masaki;Y. Yasuo;Akiyama Ryuichi;Takahashi Chihiro;Sakamoto Ryuichi;Inoue Noriyuki;O. Satoshi;Ejiri Akira;Sasao Mamiko;N. Izumi;Isobe Mitsutaka;P. Byron;Lee Seishu;Kuramoto Hideharu;Muto Sadatsugu;Ozaki Tetsuo;Goto Motoshi;Kado Shinichiro;Sagara Akio;Nishimura Shint;Takayama Sadatsugul;Shirai Yoshiakil;Pavlichenko Rostislavt;Kondo Takashil;Hasegawa Yasuhirol;Takechi Manabu;Ohkuni Kotaro;M. Go;T. Shoji;Shimizu Akihiro;Fujiwara Masami
概述了 CHS 最近的实验结果。通过引入 106 GHz 回旋管，等离子体参数可扩展到 ECH 等离子体中更高密度下的更高电子温度，并通过实现所谓的高 Ti 模式，扩展到 NBI 等离子体中更高的离子温度。通过轮廓测量，特别是通过 HIBP 进行电势测量，加深了对日射管/托萨管等离子体物理的理解。根据迄今为止获得的CHS结果，可以得出这样的结论：相对于国际仿星器标度的能量限制改进和高能离子损失锥的消除是低纵横比日射管/托萨管需要解决的重要问题。这些被认为与螺旋波纹密切相关。提出了基本上没有螺旋波纹的准轴对称结构来克服波纹问题。
Recent experimental results from CHS are overviewed. Plasma parameters are extended to higher electron temperature at higher densities in an ECH plasma by introducing 106 GHz gyrotron and to higher ion temperature in an NBI plasma by realizing the so-called high Ti mode. Understanding of he-liotron/torsatron plasma physics is deepened by profile measurements, especially by electric potential measurements with HIBP. On the basis of CHS results obtained so far, it might be concluded that the energy confinement improvement over the international stellarator scaling and elimination of the loss cone for high energy ions are important issues to be addressed for the low aspect ratio heliotron/torsa-tron. Those are thought to be closely related to the helical ripple. The quasi-axisymmetric configuration having essentially no helical ripple is proposed to overcome the ripple problem.