Effect of impurity effect on the electron cyclotron current drive

Guang YANG; Yijun ZHONG; Xueyu GONG; Qianhong HUANG; Pingwei ZHENG; Zhanhui WANG

doi:10.11889/j.0253-3219.2022.hjs.45.120201

NUCLEAR TECHNIQUES, Volume. 45, Issue 12, 120201(2022)

Effect of impurity effect on the electron cyclotron current drive

Guang YANG¹, Yijun ZHONG^1、*, Xueyu GONG^1、*, Qianhong HUANG¹, Pingwei ZHENG², and Zhanhui WANG³

Author Affiliations

¹Department of Nuclear Science and Technology, University of South China, Hengyang 421001, China

²Department of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China

³Institute of Fusion Sciences, Southwestern Institute of Physics, Chengdu 610000, China

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Figures & Tables(7)

Fig. 1. The integrated simulation workflow with OMFIT

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Fig. 2. Electron cyclotron current drive with different Z_eff without considering the effect of Z_eff changes on plasma performance

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Fig. 3. Plasma dynamic profiles and magnetic equilibrium configuration in different Z_eff cases (a) Electron density distribution, (b) Electron temperature distribution, (c) Ion temperature distribution, (d) Plasma magnetic equilibrium configuration

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Fig. 4. The relationship between the transport flux of each channel and Z_eff(a) Electron energy flux at radial position 0.6, (b) Electron energy flux at radial position 0.7, (c) Ion energy flux at radial position 0.6, (d) Ion energy flux at radial position 0.7

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Fig. 5. Radiation loss power under different Z_eff

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Fig. 6. Electron cyclotron current drive with different Z_eff considering the effect of Z_effchanges on plasma performance

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Table 1. Plasma parameters for different Z_eff cases

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Table 1. Plasma parameters for different Z_eff cases

有效电荷数 Effective charge numberZ_eff	归一化比压 Normal ized toroidal betaβ_N	安全因子 Safety factorq₉₅/q₀	自举/欧姆电流份额The fractions of bootstrap current and ohmic currentf_bs/f_ohm / %	电子回旋波驱动电流Electron cyclotron drive currentI_ec1/I_ec2/ kA	芯部电子/离子温度The core electron temperature and core ion temperatureT_e0/T_i0 / keV	芯部电子密度The core electron densityn_e0/ 10¹⁹ m^-3	储能 Thermal stored energyW_th/ MJ	辐射损失功率Radiation power lossP_rad/ MW	Shafranov位移Shafranovdisplace-ment
2.0	2.49	5.36/1.00	40.75/38.08	97.43/3.06	6.40/6.73	4.79	0.92	0.575	0.087
2.3	2.62	5.53/1.26	44.00/34.00	97.95/3.16	7.02/7.91	4.74	0.98	0.716	0.095
2.5	3.04	5.66/1.05	53.25/23.42	127.42/3.62	7.36/10.07	4.58	1.16	0.835	0.113
2.6	2.978	5.84/1.25	51.17/24.83	118.29/3.49	7.03/9.31	4.89	1.13	0.846	0.109
2.8	2.85	5.51/1.49	48.25/30.33	113.82/3.12	7.01/9.18	4.62	1.07	0.939	0.103

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Guang YANG, Yijun ZHONG, Xueyu GONG, Qianhong HUANG, Pingwei ZHENG, Zhanhui WANG. Effect of impurity effect on the electron cyclotron current drive[J]. NUCLEAR TECHNIQUES, 2022, 45(12): 120201

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