Roles of aspect ratio, absolute B and effective Z of the H-mode power threshold in tokamaks of the ITPA database

Takizuka T; ITPA H-Mode Database Working Grp

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Roles of aspect ratio, absolute B and effective Z of the H-mode power threshold in tokamaks of the ITPA database

机译：高宽比，H模式功率阈值的绝对B和有效Z在ITPA数据库的托卡马克中的作用

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An analysis of the international tokamak physics activity (ITPA) H-mode power threshold database is advanced to study the roles of the aspect ratio, A, the absolute magnetic field and the effective charge number, Z(eff). A new scaling expression for the power threshold, P-thr, is presented. The absolute B at the outer surface is used instead of B-t in the scaling, and the I-p dependence of P-thr, in low-A tokamaks is described without the explicit use of the Ip variable. A clear and strong dependence on Z(eff) is found; P-thr proportional to Z(eff)(0.7). Both the scattering nature in the data fitting and the 'low-density anomaly' can be reduced. A nonlinear A dependence is also suggested. The P-thr in ITER is predicted on the basis of the present scaling.

机译：进行了国际托卡马克物理活动（ITPA）H模式功率阈值数据库的分析，以研究纵横比A，绝对磁场和有效电荷数Z（eff）的作用。提出了功率阈值P-thr的新换算表达式。使用外表面的绝对B代替缩放中的B-t，并且在不显式使用Ip变量的情况下描述了低A托卡马克中P-thr的I-p依赖性。发现对Z（eff）有明显的依赖性; P-thr与Z（eff）（0.7）成正比。数据拟合中的散射特性和“低密度异常”都可以降低。还建议使用非线性A相依性。根据目前的比例预测ITER中的P-thr。

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《Plasma physics and controlled fusion》 |2004年第0期|共7页
作者
Takizuka T; ITPA H-Mode Database Working Grp;
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中图分类等离子体物理学;
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1. Roles of aspect ratio, absolute B and effective Z of the H-mode power threshold in tokamaks of the ITPA database [J] . Takizuka T, ITPA H-Mode Database Working Grp Plasma physics and controlled fusion . 2004,第0期

机译：高宽比，H模式功率阈值的绝对B和有效Z在ITPA数据库的托卡马克中的作用
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3. H-mode power threshold reduction in a slot-divertor configuration on the Alcator C-Mod tokamak [J] . Ma Y., Hughes J.W., Hubbard A.E., Plasma physics and controlled fusion . 2012,第8期

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5. Predictive integrated modeling of low aspect ratio tokamaks and large scale instabilities in tokamaks [D] . Nguyen, Canh Ngoc 2004

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7. H-mode power threshold reduction in a slot-divertor configuration on the Alcator C-Mod tokamak [O] . Y Ma, J W Hughes, A E Hubbard, 2012

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Roles of aspect ratio, absolute B and effective Z of the H-mode power threshold in tokamaks of the ITPA database

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