571.2MHz次谐波聚束腔的高频电磁场效应(英文)

RF Electro-magnetic Field Effects on the 571.2MHz Normal Conducting Sub-harmonic Buncher

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.

Usually, the RF electro-magnetic field can affect the resonant cavity in two ways. One is the heat loading to the cavity due to the RF power dissipation, and another is the Lorenz force due to the high RF surface field. In this paper, the RF electro-magnetic field effects on the Sub-harmonic Buncher 2 （SHB2） are described and some results presented and discussed. The analyses of the RF electro-magnetic field effects were performed by coupled simulations with finite difference method software-Superfish and finite element method software-ANSYS. In addition, the RF electro-magnetic field effects on the Sub-harmonic Buncher 1 （SHB1） are also described.