Effect of discreteness and misalignment on magnetic field and charged particle confinement in CFQS quasi-axisymmetric stellarator

被引：1

作者：

Xiong, Guozhen ^{[1
,3
]}

Xu, Yuhong ^{[1
]}

Isobe, Mitsutaka ^{[2
,3
]}

Shimizu, Akihiro ^{[2
,3
]}

Ogawa, Kunihiro ^{[2
,3
]}

Kinoshita, Shigeyoshi ^{[2
]}

Liu, Haifeng ^{[1
]}

Wang, Xianqu ^{[1
]}

Cheng, Jun ^{[1
]}

Liu, Hai ^{[1
]}

Huang, Jie ^{[1
]}

Zhang, Xin ^{[1
]}

Zhang, Yichao ^{[1
]}

Yin, Dapeng ^{[4
]}

Wang, Anzhu ^{[4
]}

Okamura, Shoichi ^{[2
]}

Tang, Changjian ^{[5
]}

机构：

[1] Southwest Jiaotong Univ, Inst Fus Sci, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China

[2] Natl Inst Fus Sci, Natl Inst Nat Sci, Toki 5095292, Japan

[3] Grad Univ Adv Studies, SOKENDAI, Toki 5095292, Japan

[4] Hefei Keye Electro Phys Equipment Mfg Co Ltd, Hefei 230000, Peoples R China

[5] Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610041, Peoples R China

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2023年 / 65卷 / 03期

基金：

中国国家自然科学基金;

关键词：

quasi-axisymmetry; toroidal field ripple; stellarator symmetry; modular coil misalignment; TOKAMAK; PHYSICS; RIPPLE; TRANSPORT; SYMMETRY; DESIGN;

D O I：

10.1088/1361-6587/acb5c1

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：

The Chinese first quasi-axisymmetric stellarator (CFQS), which will be the first quasi-axisymmetric (QA) stellarator in the world, is now under construction. The primary task of the CFQS project is to realize a QA configuration and to examine its physical properties. Based on this task, two important issues were investigated in this work in order to estimate the robustness of the CFQS design from a physical perspective. One was the toroidal field (TF) ripple due to the discreteness of modular coils (MCs) which could potentially degrade the charged particle confinement in the CFQS configuration. The other was a possible MC misalignment in the assembly that would affect the magnetic field and charged particle confinement in the CFQS. Moreover, since the stellarator symmetry might be broken by the MC misalignment, such a case was also investigated in this work. By performing a magnetic field line tracing and charged particle orbit tracing calculation, it was found that the TF ripple does not affect the confinement property significantly and the magnetohydrodynamics equilibrium was robust against possible MC misalignments. These results are helpful in defining the reasonable tolerance of assembly accuracy.

引用

页数：15

共 42 条

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