TY - JOUR
T1 - Vacuum Field Calculation in Start-up for EAST
AU - Xue, Erbing
AU - Zhang, Xianmei
AU - Nakamura, Kazuo
AU - Luo, Jiarong
AU - Yu, Limin
N1 - Funding Information:
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.
Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - 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.
AB - 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.
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U2 - 10.1007/s10894-015-0011-8
DO - 10.1007/s10894-015-0011-8
M3 - Article
AN - SCOPUS:84944705372
SN - 0164-0313
VL - 35
SP - 253
EP - 262
JO - Journal of Fusion Energy
JF - Journal of Fusion Energy
IS - 2
ER -