Impact of pellet injection on extension of the operational region in LHD
Impact of pellet injection on extension of the operational region in LHD
复制标题
颗粒喷射对 LHD 作业区域扩展的影响
DOI：
10.1088/0029-5515/41/4/304
复制
发表时间：
2000
期刊：
影响因子：
3.3
通讯作者：
M. Fujiwara
中科院分区：
文献类型：
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作者：
R. Sakamoto;H. Yamada;K. Tanaka;K. Narihara;S. Morita;S. Sakakibara;S. Masuzaki;S. Inagaki;L. Baylor;P. W. Fisher;S. Combs;M. Gouge;S. Kato;A. Komori;O. Kaneko;N. Ashikawa;P. Vries;M. Emoto;H. Funaba;M. Goto;K. Ida;H. Idei;K. Ikeda;M. Isobe;S. Kado;K. Kawahata;K. Khlopenkov;S. Kubo;R. Kumazawa;T. Minami;J. Miyazawa;T. Morisaki;S. Murakami;S. Muto;T. Mutoh;Y. Nagayama;Y. Nakamura;H. Nakanishi;K. Nishimura;N. Noda;T. Notake;T. Kobuchi;Y. Liang;S. Ohdachi;N. Ohyabu;Y. Oka;M. Osakabe;T. Ozaki;R. Pavlichenko;B. Peterson;A. Sagara;K. Saito;H. Sasao;M. Sasao;Kuninori Sato;M. Sato;T. Seki;T. Shimozuma;M. Shoji;S. Sudo;H. Suzuki;M. Takechi;Y. Takeiri;N. Tamura;K. Toi;T. Tokuzawa;Y. Torii;K. Tsumori;I. Yamada;S. Yamaguchi;S. Yamamoto;Y. Yoshimura;K. Watanabe;T. Watari;K. Yamazaki;Y. Hamada;O. Motojima;M. Fujiwara
弹丸注入已被用作大型螺旋装置的主要燃料方案。与弹丸注入，NBI等离子体的操作区域已被扩展到更高的密度，同时保持一个有利的依赖性的能量约束的密度，和几个重要的值，如等离子体存储的能量为0.88？MJ，能量约束时间为0.3？s，？在1.3%的时候是2.4%？T和密度为1.1？1020？m-3，已实现。这些参数不能通过气体喷吹获得。消融和等离子体的后续行为进行了研究。测量的颗粒穿透深度估计的H的持续时间的基础上？发射比从简单中性气体屏蔽（NGS）模型预测的深度浅。这可以用考虑快离子对烧蚀影响的NGS模型来解释。烧蚀后，再分配的烧蚀弹丸质量上观察到一个很短的时间尺度（~400？ms）。再分布导致浅沉积和低燃料效率。
Pellet injection has been used as a primary fuelling scheme in the Large Helical Device. With pellet injection, the operational region of NBI plasmas has been extended to higher densities while maintaining a favourable dependence of energy confinement on density, and several important values, such as plasma stored energy of 0.88?MJ, energy confinement time of 0.3?s, ? of 2.4% at 1.3?T and density of 1.1 ? 1020?m -3, have been achieved. These parameters cannot be attained by gas puffing. Ablation and the subsequent behaviour of the plasma have been investigated. The measured pellet penetration depth estimated on the basis of the duration of the H? emission is shallower than the depth predicted from the simple neutral gas shielding (NGS) model. It can be explained by the NGS model with inclusion of the effect of fast ions on the ablation. Just after ablation, the redistribution of the ablated pellet mass was observed on a short timescale (~400?ms). The redistribution causes shallow deposition and low fuelling efficiency.
S. Sudo、Y. Nagayama、M. Emoto、M. Goto、Y. Hamada、K. Ida、T. Ido、H. Iguchi、S. Inagaki、M. Isobe、K. Kawahata、K. KMopenkov、S.
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