Particle orbit description of cyclotron-driven current-carrying energetic electrons in the EXL-50 spherical torus

被引：2
作者：
Maekawa, Takashi [1 ]
Peng, Yueng-Kay Martin [2 ,3 ]
Liu, Wenjun [2 ,3 ]
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Kyoto 6068501, Japan
[2] Hebei Key Lab Compact Fusion, Langfang 065001, Peoples R China
[3] ENN Sci &Technol Dev Co Ltd, Langfang 065001, Peoples R China
来源：
NUCLEAR FUSION | 2023年 / 63卷 / 07期
关键词：
spherical tokamak; energetic electrons; particle orbit equilibrium; non inductive current drive;
D O I：
10.1088/1741-4326/acd2eb
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In EXL-50 plasma currents over 100 kA are non-inductively generated and maintained solely by electron cyclotron heating (ECH) power with an efficiency of similar to 1 A W-1. These currents are carried by energetic electrons (EEs) in the energy range from several tens of keV up to several hundreds of keV which also account for almost all pressure in plasma. This EE component can be viewed as a large number collection of various periodic orbits of energetic particles. Based on this picture we have developed a method for particle orbit description of the EE component in a typical plasma at IP
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