Accurate calculation of fringe fields in the LHC main dipoles
Accurate calculation of fringe fields in the LHC main dipoles
复制标题
大型强子对撞机主偶极子边缘场的精确计算
DOI：
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复制
发表时间：
2000
影响因子：
1.8
通讯作者：
N. Siegel
中科院分区：
文献类型：
--
作者：
S. Kurz;S. Russenschuck;N. Siegel
欧洲核子研究中心（CERN）开发的用于超导LHC磁体设计和优化的ROXIE程序最近在与德国斯图加特大学的合作中得到了扩展，其场计算方法基于边界元（BEM）和有限元（FEM）技术之间的耦合。这避免了线圈和空气区域的啮合，并且避免了人工远场边界条件。因此，该方法特别适合于精确计算磁场由线圈主导的超导磁体中的磁场。我们将提出在二维和三维几何形状的边缘场计算，以评估连接和低温恒温器的磁场质量和磁通密度的影响，其中辅助母线暴露。
The ROXIE program developed at CERN for the design and optimization of the superconducting LHC magnets has been recently extended in a collaboration with the University of Stuttgart, Germany, with a field computation method based on the coupling between the boundary element (BEM) and the finite element (FEM) technique. This avoids the meshing of the coils and the air regions, and avoids the artificial far field boundary conditions. The method is therefore specially suited for the accurate calculation of fields in the superconducting magnets in which the field is dominated by the coil. We will present the fringe field calculations in both 2d and 3d geometries to evaluate the effect of connections and the cryostat on the field quality and the flux density to which auxiliary bus-bars are exposed.