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高频谐振腔中的电磁场通常以两种方式影响谐振腔的特性.一种方式是通过作用在谐振腔内壁上的高频热,这主要由高频功率的欧姆损耗导致;另一种方式是通过作用在谐振腔内壁上的洛仑兹力,这主要由谐振腔内壁上的面电流和面电荷导致.联合使用有限差分软件Superfish和有限元软件ANSYS,本文对571.2MHz次谐波聚束腔中的高频电磁场效应进行了研究.此外,本文还对BEPCⅡ未来预注入器第1个次谐波聚束腔中的高频热效应进行了讨论.
An electromagnetic field in a high-frequency resonator usually affects the characteristics of the resonator in two ways: one is through high-frequency heat acting on the inner wall of the resonator, which is mainly caused by the ohmic loss of high-frequency power; The Lorentz force acting on the inner wall of the resonator is mainly caused by the surface current and the surface charge on the inner wall of the resonator. Combined with the finite-difference software Superfish and the finite element software ANSYS, the 571.2MHz subharmonic cavity The high frequency electromagnetic field effect was studied.In addition, the paper also discussed the high frequency thermal effect in the first subharmonic cavity of BEPCⅡfraudite injector in the future.