FEA Simulations of Magnets with Grain Oriented Steel

H., Witte

Brookhaven National Laboratory

关键词: Magnet;    43 Magnet;    Grain Oriented Steel;    Finite Element Simulation&;    #44;   

DOI  :  10.2172/1056411
RP-ID  :  BNL--98381-2012-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  1056411

美国|英语

来源: UNT Digital Library

【 摘 要 】

One of the potential successors of the Large Hadron Collider is a Muon Col- lider. Muons are short-lived particles, which therefore require fast acceleration. One potential avenue is a very fast cycling cyclotron, where the bending is sup- plied by a combination of fixed-field superconducting magnets and fast ramping normal conducting iron-cored coils. Due to the high ramping rate (around 1 kHz) eddy current and hysteresis losses are a concern. One way to overcome these is by using grain-oriented soft-iron, which promises superior magnetic properties in the direction of the grains. This note summarizes efforts to include the anisotropic material properties of grain-oriented steel in finite element analysis to predict the behaviour of the dipole magnets for this accelerator. It was found that including anisotropic material properties has a detrimental effect on model convergence. During this study it was not possible to include grain oriented steel with an accuracy necessary to study the field quality of a dipole magnet.