Direct computation of magnetic surfaces in Boozer coordinates and coil optimization for quasisymmetry
Direct computation of magnetic surfaces in Boozer coordinates and coil optimization for quasisymmetry
复制标题
布泽坐标系中磁性表面的直接计算和准对称性的线圈优化
DOI:
10.1017/s0022377822000563
复制
发表时间:
2022
影响因子:
2.5
通讯作者:
Landreman, Matt
中科院分区:
文献类型:
--
作者:
Giuliani, Andrew;Wechsung, Florian;Stadler, Georg;Cerfon, Antoine;Landreman, Matt
We propose a new method to compute magnetic surfaces that are parametrized in Boozer coordinates for vacuum magnetic fields. We also propose a measure for quasisymmetry on the computed surfaces and use it to design coils that generate a magnetic field that is quasisymmetric on those surfaces. The rotational transform of the field and complexity measures for the coils are also controlled in the design problem. Using an adjoint approach, we are able to obtain analytic derivatives for this optimization problem, yielding an efficient gradient-based algorithm. Starting from an initial coil set that presents nested magnetic surfaces for a large fraction of the volume, our method converges rapidly to coil systems generating fields with excellent quasisymmetry and low particle losses. In particular for low complexity coils, we are able to significantly improve the performance compared with coils obtained from the standard two-stage approach, e.g. reduce losses of fusion-produced alpha particles born at half-radius from .
登录
查看更多内容
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
D. Strickler;L. Berry;S. Hirshman
通讯作者:
S. Hirshman
DOI:
--
发表时间:
2015
期刊:
IEEE Symposium on Fusion Engineering
影响因子:
--
作者:
T. Brown;J. Breslau;D. Gates;N. Pomphrey;A. Zolfaghari
通讯作者:
A. Zolfaghari
影响因子:
3.3
作者:
A. Bader;D.T. Anderson;M. Drevlak;B. Faber;C. Hegna;S. Henneberg;M. Landreman;J. Schmitt;Y. Suzuki;A. Ware
通讯作者:
A. Ware
影响因子:
2.5
作者:
L. Singh;T. Kruger;A. Bader;C. Zhu;S. Hudson;D. Anderson
通讯作者:
D. Anderson
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
R. Dewar;S. Hudson;A. M. Gibson
通讯作者:
A. M. Gibson