Joint TEXT (J-TEXT) is an iron-core tokamak. The iron core can reduce the requirement of heating power supplies, and it also has a significant effect on the poloidal magnetic field during J-TEXT discharge. However, it is difficult to simulate an iron-core tokamak discharge process for many tokamak simulation codes (TSCs), such as TSC and DINA. Thus, the influence of the iron core on the J-TEXT magnetic field is analyzed by the theoretical model and the ANSYS model and compared with experimental results. ANSYS simulation shows that the influence of the iron core on the toroidal magnetic field can be ignored, but it has a significant impact on the poloidal magnetic field. By the comparison of ANSYS simulation and experimental results, the correction coefficient of the poloidal field with and without iron core is obtained, which can be used in some non iron-core TSC.

中文翻译：

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J-TEXT托卡马克中磁场的比较分析

联合文本（J-TEXT）是一个铁心托卡马克。铁芯可以减少对加热电源的需求，并且对J-TEXT放电期间的极向磁场也有显着影响。但是，对于许多托卡马克模拟代码（TSC），例如TSC和DINA，很难模拟铁芯托卡马克放电过程。因此，通过理论模型和ANSYS模型分析了铁芯对J-TEXT磁场的影响，并与实验结果进行了比较。ANSYS仿真表明，铁芯对环形磁场的影响可以忽略，但对极向磁场的影响很大。通过ANSYS仿真和实验结果的比较，得到了有铁芯和无铁芯的极向场的校正系数，