Cryogenic Test of a Proof-of-Principle Superconducting RF-Dipole Deflecting and Crabbing Cavity
Cryogenic Test of a Proof-of-Principle Superconducting RF-Dipole Deflecting and Crabbing Cavity
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原理验证超导射频偶极子偏转和掠射腔的低温测试
DOI：
10.1103/physrevstab.16.082001
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发表时间：
2013
影响因子：
--
通讯作者：
J. Delayen
中科院分区：
文献类型：
--
作者：
S. D. Silva;J. Delayen
最近需要紧凑低频偏转和偏斜腔的应用已经开始设计和开发在高梯度下低损耗工作的新型超导结构。此前，TM{sub 110}型偏转、偏斜腔已研制成功并已成功运行。然而，这些几何形状对于低工作频率来说并不是有利的设计。超导射频偶极腔是第一个紧凑的偏转和偏转几何结构，已证明具有高梯度和高分流阻抗。由于基本工作模式是最低模式并且与最近的高阶模式相距甚远，因此射频偶极子设计对于高电流应用中高阶模式的有效阻尼而言是一种有吸引力的几何结构。 400 MHz 射频偶极子腔已作为原理验证腔进行设计、制造和测试。该腔体实现了高操作梯度，并且倍增水平很容易处理并且不会再次发生。
Recent applications in need of compact low-frequency deflecting and crabbing cavities have initiated the design and development of new superconducting structures operating at high gradients with low losses. Previously, TM{sub 110}-type deflecting and crabbing cavities had been developed and have also been in operation successfully. However these geometries are not favorable designs for low operating frequencies. The superconducting rf-dipole cavity is the first compact deflecting and crabbing geometry that has demonstrated high gradients and high shunt impedance. Since the fundamental operating mode is the lowest mode and is widely separated from the nearest higher order mode, the rf-dipole design is an attractive geometry for effective damping of the higher order modes in high current applications. A 400 MHz rf-dipole cavity has been designed, fabricated, and tested as a proof-of-principle cavity. The cavity achieved high operating gradients, and the multipacting levels were easily processed and did not reoccur.