Multiphysics simulations are widely used in designing high average power RF cavities, which require iterations of RF simulation, thermal simulation and mechanical simulation in a closed loop. The reliability and accuracy of the multiphysics simulations are crucial, otherwise extra design margins are needed for simulation uncertainties. We present an experimental benchmark for the multiphysics simulations of a 40 kW L-band RF gun at the Photo Injector Test facility at DESY in Zeuthen (PITZ). The gun temperature distribution and frequency shift due to average RF heating power are measured and compared with multiphysics simulations.

中文翻译：

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L波段高平均功率RF枪的多物理场仿真的实验基准研究

多物理场仿真被广泛用于设计高平均功率的RF腔，这些腔需要在闭环中反复进行RF仿真，热仿真和机械仿真。多物理场仿真的可靠性和准确性至关重要，否则仿真不确定性需要额外的设计余量。我们在Zeuthen（PITZ）的DESY的光电注入器测试设施中为40 kW L波段RF枪的多物理场仿真提供了实验基准。测量了平均RF加热功率引起的喷枪温度分布和频移，并将其与多物理场仿真进行了比较。