Numerical Study of Eddy Current Distribution in the Ti-Coated Layer of a Nonlinear Kicker Chamber

Hao-Wen Luo^1*

¹Light Source Division, National Synchrotron Radiation Research Center, Hsinchu, Taiwan

* Presenter:Hao-Wen Luo, email:luo.hw@nsrrc.org.tw

This study derives 2D approximated expressions for eddy currents induced in the titanium-coated layer of a nonlinear kicker chamber and validates them through numerical simulations. Nonlinear kicker-based injection schemes have gained prominence in recent years and are implemented at several particle accelerator facilities. Eddy currents, influenced by both the applied magnetic field and the chamber’s geometry, can introduce undesirable field components that affect kicker performance. The proposed approximations provide a rapid and practical method to estimate these eddy current effects. To enhance the analysis, we developed a user-friendly numerical program with a graphical user interface, designed and implemented by the author, capable of computing eddy current distributions for arbitrary chamber geometries. This custom-built tool simplifies the simulation process, enabling flexible and efficient evaluation of complex designs. The results offer valuable insights into optimizing coating properties and chamber geometry, contributing to the advancement of nonlinear kicker systems in particle accelerators.

Keywords: Nonlinear, Eddy current, Synchrotron