文献类型：期刊文献

英文题名：Vacuum Field Calculation in Start-up for EAST

作者：Xue, Erbing[1];Zhang, Xianmei[1];Nakamura, Kazuo[2];Luo, Jiarong[3];Yu, Limin[1]

机构：[1]E China Univ Sci & Technol, Sch Sci, Dept Phys, Shanghai 200237, Peoples R China;[2]Kyushu Univ, Appl Mech Res Inst, Kasuga, Fukuoka 816, Japan;[3]Donghua Univ, Dept Phys, Coll Sci, Shanghai 201620, Peoples R China

年份：2016

卷号：35

期号：2

起止页码：253

外文期刊名：JOURNAL OF FUSION ENERGY

收录：;EI(收录号：20154301438232);WOS:【SCI-EXPANDED(收录号:WOS:000371623500018)】；

基金：This work was supported by the Chinese National Natural Science Foundation Contract Nos. 11405058 and 11105028, and the Chinese Ministry of Science and Technology Contract No. 2013GB106020.

语种：英文

外文关键词：EAST; Eddy current; Vacuum field; Cauchy condition surface method

摘要：For a tokamak, the poloidal field control systems drive current in coils to provide the contributions to the total poloidal field. The current in each coil must be adjusted to achieve a large enough null field region and a proper loop voltage for the breakdown of the gas pre-fill and the initial ramp-up of the plasma current. Whether the vacuum field can be reconstructed precisely is very important to the optimizing of plasma breakdown. Two kinds of algorithms were investigated to calculate the vacuum field. The first algorithm, being a traditional algorithm used to calculate the vacuum field is based on Green's function. The second algorithm, used to calculate the vacuum field is based on the Cauchy condition surface method, a method which was used to calculate the vacuum field at start-up for the first time. Comparing the calculation results of the algorithms for EAST, the results for flux and magnetic field agree well in the region that matter, which confirms the utility of the new method.