HL-2A 装置反剪切阿尔芬本征模实验观测与模拟验证

doi:10.16568/j.0254-6086.202101001

核聚变与等离子体物理 ›› 2021, Vol. 41 ›› Issue (1): 1-7.DOI: 10.16568/j.0254-6086.202101001

• 等离子体物理学 • 下一篇

HL-2A 装置反剪切阿尔芬本征模实验观测与模拟验证

孙昊方，施培万，陈伟*

(核工业西南物理研究院，成都 610041)

收稿日期:2019-11-09 修回日期:2020-01-09 出版日期:2021-03-15 发布日期:2022-01-18
作者简介:孙昊方(1995−)，男，山东青岛人，硕士，主要从事高能量粒子实验研究。

Experimental observation and simulation verification of reverse shear Alfvén eigenmodes on HL-2A tokamak

SUN Hao-fang, SHI Pei-wan, CHEN Wei

(Southwestern Institute of Physics, Chengdu 610041)

Received:2019-11-09 Revised:2020-01-09 Online:2021-03-15 Published:2022-01-18

摘要/Abstract

摘要： 利用 AMC 程序获取了不同最小安全因子( q_min )情况下反剪切阿尔芬本征模频率(RSAE)的变化特征：
当最小安全因子 q_min >1 时，RSAE 频率随着 q_min 增大而增大；当 q_min <1 时，RSAE 频率随着 q_min 减小而增大。这
与简化 RSAE 色散关系给出的频率相符。在 HL-2A 电流爬升期间和锯齿期间分别发现了 q_min >1 和 q_min <1 情况下
缓慢向上扫频的模。这些模的频率介于环向阿尔芬本征模和比压阿尔芬本征模之间，与 AMC 得到的 RSAE 模频
率一致，模的径向结构由单一极向谐波组成，并且高度局域在 q_min 附近，具有典型的 RSAE 特征。

关键词: 反剪切阿尔芬本征模；安全因子；HL-2A 装置

Abstract: Using AMC program, the frequency variation characteristics of reverse shear Alfvén eigenmodes
(RSAE) under different safety factors are obtained. When the minimum of q-profile q_min >1, the frequency of
RSAE increases with the increase of q_min , and the frequency of RSAE increases with the decrease of q_min when
q_min <1, which is consistent with the frequency given by simplified RSAE dispersion relation. In HL-2A
experiment, the up-sweeping mode was found in the case of q_min >1 and q_min <1 during the current ramp-up and
sawtooth phase, respectively. The frequencies of these modes are between the toroidal Alfvén eigenmodes and the
beta-induced Alfvén eigenmodes, which are identical with the frequency of the RSAE modes obtained with AMC.
The radial mode structure consists of a single poloidal harmonic wave and is highly localized nearby q_min , which
is the typical characteristics of RSAE.

Key words: Reverse shear Alfvén eigenmode, Safety factor, HL-2A tokamak

中图分类号:

TL62+2

孙昊方, 施培万, 陈伟 . HL-2A 装置反剪切阿尔芬本征模实验观测与模拟验证 [J]. 核聚变与等离子体物理, 2021, 41(1): 1-7.

SUN Hao-fang, SHI Pei-wan, CHEN Wei . Experimental observation and simulation verification of reverse shear Alfvén eigenmodes on HL-2A tokamak[J]. Nuclear Fusion and Plasma Physics, 2021, 41(1): 1-7.

参考文献

[1] Chen L, Zonca F. Theory of Alfvén waves and energetic particle physics in burning plasmas [J]. Nucl. Fusion, 2007, 47: S727.
[2] Berk H L, Borba D N, Breizman B N. Theoretical interpretation of Alfvén cascades in Tokamaks with nonmonotonic q profiles [J]. Phys. Rev. Lett., 2001, 87: 185002‒1.
[3] Sharapov S E, Alper B, Berk H L. Alfvén wave cascades in a tokamak [J]. Phys. Plasmas, 2002, 9: 2027.
[4] Fasoli A, Testa D, Sharapov S. MHD spectroscopy [J].Plasma Phys. Contr. Fusion, 2002, 44: B159.
[5] Kramer G J, Gorelenkov N N, Nazikian R. Finite pressure effects on reversed shear Alfvén eigenmodes [J].Plasma Phys. Contr. Fusion, 2004, 46: L23.
[6] Konovalov S V, Mikhailovskii A B, Shirokov M S.Kinetic reversed-shear Alfvén eigenmodes [J]. Phys.Plasmas, 2004, 11: 4531.
[7] Gorelenkov N N. Existence of weakly damped kinetic Alfvén eigenmodes in reversed shear tokamak plasmas[J]. Phys. Plasmas, 2008, 15: 110701.
[8] Gorelenkov N N, Kramer G J, Nazikian R. Combined ideal and kinetic effects on reversed shear Alfvén eigenmodes [J]. Phys. Plasmas, 2011, 18: 102503.
[9] Nazikian R, Kramer G J, Cheng C Z. New interpretation of alpha-particle-driven instabilities in deuterium-tritium experiments on the Tokamak Fusion Test Reactor [J].Phys. Rev. Lett., 2003, 91: 125003.
[10] Zeeland M A V, Kramer G J, Nazikian R. Alfvén eigenmode observations on DIII-D via two-colour CO2 interferometry [J]. Plasma Phys. Contr. Fusion, 2005, 47:L31.
[11] Fredrickson E D, Crocker N A, Gorelenkov N N. β suppression of Alfvén cascade modes in the National Spherical Torus Experiment [J]. Phys. Plasmas, 2007, 14: 102510.
[12] Chen W, Yu L M, Liu Y. Destabilization of reversed shear Alfvén eigenmodes driven by energetic ions during NBI in HL-2A plasmas with qmin~1 [J]. Nucl. Fusion, 2014, 54: 104002.
[13] Garcia-Munoz M, Hicks N, Van Voornveld R. Convective and diffusive energetic particle losses induced by shear Alfvén waves in the ASDEX upgrade tokamak [J]. Phys.Rev. Lett., 2010, 104: 185002.
[14] Xie H S, Xiao Y. Parallel equilibrium current effect on existence of reversed shear Alfvén eigenmodes [J]. Phys.Plasmas, 2015, 22: 022518.

HL-2A 装置反剪切阿尔芬本征模实验观测与模拟验证

Experimental observation and simulation verification of reverse shear Alfvén eigenmodes on HL-2A tokamak

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 6

编辑推荐

Metrics

[1]	邹晖, 李广生, 邱银, 刘晓龙, 刘健, 单亚农, 李强, HL-M 研制团队 . HL-2M 装置极向场线圈的结构设计与制造[J]. 核聚变与等离子体物理, 2021, 41(s1): 307-311.
[2]	刘晓龙, 李广生, 邹晖, 邱银, 单亚农, 蔡立君, 刘健, HL-M 研制团队. HL-2M 装置环向场线圈的工程研制与调试[J]. 核聚变与等离子体物理, 2021, 41(s1): 312-315.
[3]	邱银, 李广生, 邹晖, 刘晓龙, 单亚农, 刘健, 蔡立君, 李强, HL-M 研制团队 . HL-2M 装置中心螺旋管线圈结构和制造工艺概述[J]. 核聚变与等离子体物理, 2021, 41(s1): 316-320.
[4]	张龙, 刘健, 赖春林, 刘宽程, 查方正, 蔡立君, 卢勇, 黄文玉, HL-M 研制团队. HL-2M 磁体系统安装中的定位与测量 [J]. 核聚变与等离子体物理, 2021, 41(s1): 321-326.
[5]	卢勇, 蔡立君, 黄文玉, 刘雨祥, 赖春林, 刘健, 张炜, 栗再新 . HL-2M 装置限制器系统设计及工艺研究[J]. 核聚变与等离子体物理, 2021, 41(s1): 351-354.
[6]	张龙, 袁应龙, 蔡立君, 刘健, 卢勇, 刘雨祥, 刘宽程, 李云峰, HL-M 团队 . HL-2M 极向场线圈支撑结构分析评估[J]. 核聚变与等离子体物理, 2021, 41(s1): 402-408.