Dependence of pedestal properties on plasma parameters

S.K. Kim; Y.-S. Na; S. Saarelma; O. Kwon

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Dependence of pedestal properties on plasma parameters

机译：基座特性对血浆参数的依赖性

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摘要

We have numerically investigated the dependence of pedestal properties such as the pedestal height and the pedestal width on various global parameters using the EURO-DEMO as the reference equilibrium. We have used EPED, a predictive model of the edge pedestal. Among global parameters, we have chosen to vary the triangularity, δ, the elongation, κ, and the poloidal beta, β_p, which have larger effects on the pedestal properties. Improvement of pedestal properties can be achieved for more shaped plasma boundary. However, the increase in the pedestal height and the width with δ saturates around δ ～ 0.6. Also, the pedestal width saturates and the pedestal temperature starts to decrease for κ > 1.9. Improvement of the pedestal properties due to δ is larger at higher poloidal beta. The pedestal width slightly increases with the electron density at the pedestal top and the effective charge number.

机译：我们已经使用EURO-DEMO作为参考平衡数值研究了基座特性（例如，基座高度和基座宽度）对各种全局参数的依赖性。我们使用了EPED，这是边缘基座的预测模型。在全局参数中，我们选择改变三角形度δ，伸长率κ和极向β值β_p，这对基座性能有较大影响。对于更成形的等离子体边界，可以实现基座性能的改善。但是，基座高度和宽度随δ的增加在δ〜0.6附近达到饱和。同样，当κ> 1.9时，基座宽度会饱和，并且基座温度开始降低。在较高的倍数β值下，由于δ而引起的基座性能改善更大。基座宽度随基座顶部的电子密度和有效电荷数而略有增加。

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来源
《Nuclear fusion》 |2018年第1期|016036.1-016036.7|共7页
作者
S.K. Kim; Y.-S. Na; S. Saarelma; O. Kwon;
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作者单位

Department of Nuclear Engineering, Seoul National University, Gwanak 08826, Seoul, Republic of Korea;

Department of Nuclear Engineering, Seoul National University, Gwanak 08826, Seoul, Republic of Korea;

Euratom/CCFE Fusion Association, Culham Science Centre, OX 14 3DB, Abingdon, United Kingdom;

Department of Physics, Daegu University, Gyeongsan 38453, Gyeongbuk, Republic of Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
edge pedestal; pedestal stability; plasma shape; edge collisionality; EPED; poloidal beta; ideal MHD;

机译：边缘基座基座稳定性等离子形状边缘碰撞EPED;倍体β理想的MHD;

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机译：氢，氘和氦等离子体边缘基座中径向电场的参数依赖性
2. Dimensionless parameter dependence of H-mode pedestal width using hydrogen and deuterium plasmas in JT-60U [J] . H. Urano, T. Takizuka, Y. Kamada, Nuclear fusion . 2008,第4期

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3. Effect of global plasma parameters on the transition of edge pedestal properties in j(phi) - alpha space [J] . Kim S. K., Na Y. -S., Kwon O. Current applied physics: the official journal of the Korean Physical Society . 2019,第3期

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5. Two approaches to self-organization in plasma: Kinetic theory treatment for the dynamo problem and sandpile automaton model for pedestal formation in magnetically confined plasma. [D] . Gruzinov, Irina. 2002

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6. Recent Experiments Support a Microemulsion Origin of Plasma Membrane Domains: Dependence of Domain Size on Physical Parameters [O] . David W. Allender, M. Schick 2020

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7. Parameter dependence of the radial electric field in the edge pedestal of hydrogen, deuterium and helium plasmas [O] . E Viezzer, T Pütterich, R M McDermott, 2014

机译：氢，氘和氦等离子体边缘基座径向电场的参数依赖性

Dependence of pedestal properties on plasma parameters

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