微波功率模块(Microwave Power Module,MPM)是电真空发射机的发展方向之一,目前MPM饱和功率量级在百瓦量级。为保障系统工作稳定性和判断MPM的输出能效,需要MPM具有实时监测输出功率的能力。文章提出了一种在行波管输出端增加耦合口的...微波功率模块(Microwave Power Module,MPM)是电真空发射机的发展方向之一,目前MPM饱和功率量级在百瓦量级。为保障系统工作稳定性和判断MPM的输出能效,需要MPM具有实时监测输出功率的能力。文章提出了一种在行波管输出端增加耦合口的方案来监测输出功率。相比传统通过定向耦合器测试功率的方案,该方案具有高效率、小型化、低成本、高可靠性等特点。展开更多
In this study,a phenomenological model of the radio frequency(RF)behavior of a superconducting cavity fundamental power coupler is proposed by analyzing the simulation results of a transient beam-loading process in an...In this study,a phenomenological model of the radio frequency(RF)behavior of a superconducting cavity fundamental power coupler is proposed by analyzing the simulation results of a transient beam-loading process in an extremely overcoupled superconducting cavity.Using this phenomenological model,the calculation of the transient reflected power from a superconducting cavity under beam loading can be mathematically simplified to algebraic operations without solving the differential equation governing the transient beam-loading process,while maintaining the calculation accuracy.Moreover,this phenomenological model can facilitate an intuitive understanding of the significant surge in the time evolution of reflected power from a superconducting cavity in certain beam-loading processes.The validity of this phenomenological model was carefully examined in various beam-loading processes and cavity conditions,and the method based on this phenomenological model was utilized in the transient RF analysis of the superconducting cavity system of the CAFe Linac,achieving satisfactory results.展开更多
文摘微波功率模块(Microwave Power Module,MPM)是电真空发射机的发展方向之一,目前MPM饱和功率量级在百瓦量级。为保障系统工作稳定性和判断MPM的输出能效,需要MPM具有实时监测输出功率的能力。文章提出了一种在行波管输出端增加耦合口的方案来监测输出功率。相比传统通过定向耦合器测试功率的方案,该方案具有高效率、小型化、低成本、高可靠性等特点。
基金supported by the CAS“Light of West China”Program (No.29Y936020)National Natural Science Foundation of China (No.12105331)Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB34010102)。
文摘In this study,a phenomenological model of the radio frequency(RF)behavior of a superconducting cavity fundamental power coupler is proposed by analyzing the simulation results of a transient beam-loading process in an extremely overcoupled superconducting cavity.Using this phenomenological model,the calculation of the transient reflected power from a superconducting cavity under beam loading can be mathematically simplified to algebraic operations without solving the differential equation governing the transient beam-loading process,while maintaining the calculation accuracy.Moreover,this phenomenological model can facilitate an intuitive understanding of the significant surge in the time evolution of reflected power from a superconducting cavity in certain beam-loading processes.The validity of this phenomenological model was carefully examined in various beam-loading processes and cavity conditions,and the method based on this phenomenological model was utilized in the transient RF analysis of the superconducting cavity system of the CAFe Linac,achieving satisfactory results.
