Optimization of helicon wave off-axis current drive in CFETR tokamak
Optimization of helicon wave off-axis current drive in CFETR tokamak
复制标题
CFETR 托卡马克螺旋波离轴电流驱动优化
DOI：
10.1016/j.fusengdes.2021.112897
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发表时间：
2021-11
影响因子：
1.7
通讯作者：
Liu Hongbo
中科院分区：
文献类型：
--
作者：
Li Xinxia;Li Guozhuang;Liu Hongbo
中国聚变工程试验堆（CFETR）是一个托卡马克堆，目标是最终达到1GW的DEMO相关聚变功率水平。一个较低的单零配置的偏滤器设计提出的机器。为了获得等离子体的高性能操作，混合和稳态操作的情况下，建议。在这些情况下，通常已达到< β e> 1.6%的血浆β。本文利用GENRAY/CQL 3D程序对CFETR中螺旋波的传播和电流驱动进行了研究。对CFETR等离子体中波阻尼因子的分析表明，核心等离子体中电子朗道阻尼占主导地位。根据无量纲参数ε e和β e，找到了一个较强的波浪阻尼区域，并利用GENRAY数值模拟得到了两种情况下的单程功率谱。在发射极向角上扫描产生的电流表明，在θ = 30 0时产生高的电流驱动效率。对于频率f= 700 MHz的螺旋波，电流驱动的计算表明，在混合和稳态情况下分别获得约30 kA/MW和50 kA/MW的离轴电流驱动。同时，较低的等离子体密度和较高的温度促进了大电流的产生。此外，所获得的电流驱动及其峰值位置被示出为对发射的n//敏感。最后，提出了频率f= 700 MHz，发射n//n = 2.0-3.0的螺旋波是CFETR有效的离轴电流驱动方案。
Abstract The China Fusion Engineering Testing Reactor (CFETR) is a tokamak reactor and aims to eventually reach DEMO relevant fusion power level of 1 GW. A lower single null configuration of the divertor design is proposed for the machine. To obtain the high performance operation of the plasma, both the hybrid and steady-state operating scenarios are suggested. In these scenarios, the plasma beta of< β e>∼ 1.6% has been generally reached. In the paper, helicon wave propagation and current drive in CFETR are studied through GENRAY/CQL3D code. An analysis of the wave damping factor in CFETR plasma indicates that the electron Landau damping is dominant for the core plasma. According to the dimensionless parameter ξ e and β e, a strong wave damping region is found. Based on the GENRAY simulation, the single pass power absorptions are generally obtained in both scenarios. Scanning of generated current on the launched poloidal angle indicates that high current drive efficiency is produced at θ∼ 30 0. For helicon wave with frequency f= 700 MHz, calculations of the current drive show that off-axis current drive about 30 kA/MW and 50 kA/MW are obtained in the hybrid and steady-state scenarios respectively. Simultaneously, the lower plasma density and high temperature promote the high current generation. Moreover, the obtained current drive and its peak position are shown to be sensitive to the launched n//. Finally, the helicon wave with frequency f= 700 MHz and launched n//∼ 2.0–3.0 is proposed to be a promising scheme for effective off-axis current drive in CFETR.
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DOI：
--
发表时间：
2013-11
期刊：
Bulletin of the American Physical Society
影响因子：
--
作者：
R. Prater;R. Pinsker;C. Moeller;M. Porkolab;V. Vdovin
通讯作者：
R. Prater;R. Pinsker;C. Moeller;M. Porkolab;V. Vdovin
影响因子：
3.3
作者：
C. Lau;E. Jaeger;N. Bertelli;L. Berry;D. Green;M. Murakami;J. M. Park;R. Pinsker;R. Prater
通讯作者：
C. Lau;E. Jaeger;N. Bertelli;L. Berry;D. Green;M. Murakami;J. M. Park;R. Pinsker;R. Prater
稳态运行的 CFETR 基线场景的自洽建模
影响因子：
2.2
作者：
Jiale Chen;Xiang Jian;Vincent S Chan;Zeyu Li;Zhao Deng;Guoqiang Li;Wenfeng Guo;Nan Shi;Xi Chen;CFETR Physics Team
通讯作者：
CFETR Physics Team
影响因子：
1.1
作者：
Jiale Chen;G. Jia;N. Xiang
通讯作者：
Jiale Chen;G. Jia;N. Xiang
影响因子：
2.2
作者：
M. Ono
通讯作者：
M. Ono