摘要
托卡马克装置预电离过程中,环向磁场应与电子回旋波频率相匹配,NCST装置现有的电子回旋波频率较低,为了让环向场与已有的电子回旋波频率匹配,提出新的环向场线圈电流产生方案,在原方案的磁场线圈平顶电流产生之前增加一个低电流台阶。回顾NCST球形托卡马克装置环向场线圈电源的原有方案后,设计了全控型和半控型两种方案,从电压电流的高次谐波、电流的可控性和纹波、改动成本和安装便捷性四方面对比两个方案的优缺点,最终选定半控型改造方案。根据现场条件制作电源改造柜,尽量减少对原有电源柜的改动。实际测试结果显示,两个电流台阶衔接正常,低电流台阶宽度可调、幅值可调,满足改造要求。
Toroidal magnetic field should match frequency of the electron cyclotron wave in pre-ionizationprocess of the Tokamak device.The existing electron cyclotron wave frequency of the NCST(Nanchang SphericalTokamak)is low.A new toroidal coil current generation scheme is proposed to match the current electron cyclotronwave frequency.A low current step is added before the existing flat top current of original scheme.After reviewing theoriginal scheme of the toroidal coil power supply of NCST,two schemes of full control and semi-control are designed.Advantages and disadvantages of the two schemes are compared from four aspects:high order harmonics of voltageand current,controllability and ripple of current,modification cost and installation convenience,and finally the semi-control transformation scheme is selected.The power supply cabinet is modified according to the field conditions withminimum alteration.Actual test results show that the two current steps are connected normally,and the width andamplitude of low current steps are adjustable,which meets the transformation requirements.
作者
陈俊宏
肖东华
熊玉珍
王英翘
陈小昌
宣伟民
戢洋
Chen Junhong;Xiao Donghua;Xiong Yuzhen;Wang Yingqiao;Chen Xiaochang;Xuan Weimin;Ji Yang(Center for Fusion Science,Southwestern Institute of Physics,Chengdu 610041,China;School of Physics and Materials Science,Nanchang University,Nanchang 330031,China)
出处
《强激光与粒子束》
CAS
CSCD
北大核心
2024年第2期86-92,共7页
High Power Laser and Particle Beams
基金
四川省科技计划项目(2021JDTD0022、MZGC20230009)。
