Multiphysics Analysis of Normal Conducting RF Cavities for High Intensity Proton Accelerators

M. Hassan[1], I. Gonin[1], T. Khabiboulline[1], V. Yakovlev[1]
[1]Fermi National Accelerator Laboratory, Batavia, IL, USA
发布日期 2013

Normal conducting cavities are typically used in the front end of proton accelerators to get the beam accelerated to velocities approximately a few tenths of the speed of light, where superconducting cavities can then be used to accelerate the beam to the speed of light. The warm part of a typical proton accelerator would contain a radio frequency quadrupole (RFQ) and several buncher cavities. The RF heating in normal conducting cavities was successfully modeled using COMSOL Multiphysics® for several resonant structures. For the RFQ results demonstrated, the projected frequency shift that could happen due to thermal stresses, which is a vital factor for proper operation of the whole RFQ structure, is basically fine-tuned through water temperature.