Observation of spectrum effect on the measurement of intrinsic error field on EAST
Observation of spectrum effect on the measurement of intrinsic error field on EAST
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DOI：
10.1088/0029-5515/56/6/066011
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发表时间：
2016-05
期刊：
影响因子：
3.3
通讯作者：
Huihui Wang;Youwen Sun;J. Qian;T. Shi;B. Shen;S. Gu;Yueqiang Liu;Wenfeng Guo;N. Chu;
中科院分区：
文献类型：
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作者：
Huihui Wang;Youwen Sun;J. Qian;T. Shi;B. Shen;S. Gu;Yueqiang Liu;Wenfeng Guo;N. Chu;
用“罗盘扫描”技术测量了在欧姆加热放电中，不同n=1磁扰动线圈配置的EAST的本征误差场。用上、下谐振磁扰动线圈偶联的非共振占优频谱测得的本征误差场为Br2，1/BT≃10−5量级，本征误差场的环向相位约为60°。在使用两种线圈构型，共振和非共振主导光谱的结果之间，观察到明显的差异。“共振”和“非共振”的术语是基于真空建模的。非共振主导情况下的穿透阈值远小于共振情况下的穿透阈值。通过使用MARS-F程序对等离子体响应进行建模，减小了共振和非共振情况下穿透阈值的差异。
Intrinsic error field on EAST is measured using the ‘compass scan’ technique with different n = 1 magnetic perturbation coil configurations in ohmically heated discharges. The intrinsic error field measured using a non-resonant dominated spectrum with even connection of the upper and lower resonant magnetic perturbation coils is of the order br2,1/BT≃10−5 and the toroidal phase of intrinsic error field is around 60°. A clear difference between the results using the two coil configurations, resonant and non-resonant dominated spectra, is observed. The ‘resonant’ and ‘non-resonant’ terminology is based on vacuum modeling. The penetration thresholds of the non-resonant dominated cases are much smaller than that of the resonant cases. The difference of penetration thresholds between the resonant and non-resonant cases is reduced by plasma response modeling using the MARS-F code.