Confinement characteristics of high-energy ions produced by ICRF heating in the large helical device

Confinement characteristics of high-energy ions produced by ICRF heating in the large helical device
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ICRF加热产生的高能离子在大型螺旋装置中的约束特性

DOI:
10.1088/0741-3335/45/6/315
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发表时间:
2003
影响因子:
2.2
通讯作者:
M. Fujiwara
M. Fujiwara
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
R. Kumazawa;K. Saito;Y. Torii;T. Mutoh;T. Seki;T. Watari;M. Osakabe;S. Murakami;M. Sasao;Tomo;T. Yamamoto;T. Notake;N. Takeuchi;T. Saida;F. Shimpo;G. Nomura;M. Yokota;A. Kato;Y. Zao;H. Okada;M. Isobe;T. Ozaki;K. Narihara;Y. Nagayama;S. Inagaki;S. Morita;A. Krasilnikov;H. Idei;S. Kubo;K. Ohkubo;M. Sato;T. Shimozuma;Y. Yoshimura;K. Ikeda;K. Nagaoka;Y. Oka;Y. Takeiri;K. Tsumori;N. Ashikawa;M. Emoto;H. Funaba;M. Goto;K. Ida;T. Kobuchi;Y. Liang;S. Masuzaki;T. Minami;J. Miyazawa;T. Morisaki;S. Muto;Y. Nakamura;H. Nakanishi;K. Nishimura;N. Noda;S. Ohdachi;B. Peterson;A. Sagara;S. Sakakibara;R. Sakamoto;Kuninori Sato;M. Shoji;H. Suzuki;K. Tanaka;K. Toi;T. Tokuzawa;Kiyomasa Y. Watanabe;I. Yamada;S. Yamamoto;M. Yoshinuma;M. Yokoyama;K. Watanabe;O. Kaneko;K. Kawahata;A. Komori;N. Ohyabu;H. Yamada;K. Yamazaki;S. Sudo;K. Matsuoka;Y. Hamada;O. Motojima;M. Fujiwara

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本文讨论了离子回旋频率范围(ICRF)电场加速高能离子在大螺旋装置(LHD)中的行为。通过测量高能离子的能谱,并与电子慢化过程确定的有效温度进行比较,实验验证了磁轴内移结构对高能离子具有较好的约束性能.在标准磁轴配置中,随着有效温度的增加,观察到所测量的尾部温度的饱和。这两个量之间的比率是从高能离子到大块等离子体的传输效率的质量的度量;当将该效率与蒙特卡罗模拟进行比较时,结果相当一致。使用ICRF加热功率调制方法测量高能离子的存储能量与体等离子体的存储能量的比率;它是从总等离子体存储能量与体等离子体存储能量之间的相位差和调制的ICRF加热功率推导出来的。测量的高能部分同意使用注入ICRF加热功率计算,在实验中确定的转移效率和限制缩放的LHD等离子体。
The behaviour of high-energy ions accelerated by an ion cyclotron range of frequency (ICRF) electric field in the large helical device (LHD) is discussed. A better confinement performance of high-energy ions in the inward-shifted magnetic axis configuration was experimentally verified by measuring their energy spectrum and comparing it with the effective temperature determined by an electron slowing down process. In the standard magnetic axis configuration a saturation of the measured tail temperature was observed as the effective temperature was increased. The ratio between these two quantities is a measure of the quality of transfer efficiency from high-energy ions to a bulk plasma; when this efficiency was compared with Monte Carlo simulations the results agreed fairly well. The ratio of the stored energy of the high-energy ions to that of the bulk plasma was measured using an ICRF heating power modulation method; it was deduced from phase differences between total and bulk plasma stored energies and the modulated ICRF heating power. The measured high energy fraction agreed with that calculated using the injected ICRF heating power, the transfer efficiency determined in the experiment and the confinement scaling of the LHD plasma.
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A.V.Krasilnikov:“使用天然钻石探测器在 LHD 中进行 ICRF 和 NBI 加热过程中高能质子的加速和限制研究”核聚变。
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K. Y. Watanabe;et al.
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