Adjusting the accelerating field distribution of a superconducting CH cavity

XU Meng-Xin; HE Yuan; ZHANG Sheng-Hu; XIA Jia-Wen

doi:10.1088/1674-1137/39/5/057009

Chinese Physics C> 2015, Vol. 39> Issue(5) : 057009 DOI: 10.1088/1674-1137/39/5/057009

Adjusting the accelerating field distribution of a superconducting CH cavity

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In a superconducting CH (cross bar H mode) cavity, the method of regulating the length of a drift tube is employed to adjust the distribution of the accelerating field. In this article, we simulate the electromagnetic field of a CH structure to illustrate the reason for adjusting the field distribution by varying drift tube length. Meanwhile, that the presence of the drift tube will cause a sharp rise in the maximum electric field is also shown. This phenomenon is contrary to superconducting cavity design principles in which the cavity geometry needs to be optimized to reduce the maximum electric field to avoid field emission. We propose a variable diameter superconducting CH cavity design to solve this conflict. The simulation of the variable diameter superconducting CH cavity shows that this method is feasible.

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XU Meng-Xin, HE Yuan, ZHANG Sheng-Hu and XIA Jia-Wen. Adjusting the accelerating field distribution of a superconducting CH cavity[J]. Chinese Physics C, 2015, 39(5): 057009. doi: 10.1088/1674-1137/39/5/057009

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Received: 2014-08-13
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Adjusting the accelerating field distribution of a superconducting CH cavity

Corresponding author: XU Meng-Xin,

Received Date: 2014-08-13

Accepted Date: 1900-01-01

Available Online: 2015-05-05

Abstract: In a superconducting CH (cross bar H mode) cavity, the method of regulating the length of a drift tube is employed to adjust the distribution of the accelerating field. In this article, we simulate the electromagnetic field of a CH structure to illustrate the reason for adjusting the field distribution by varying drift tube length. Meanwhile, that the presence of the drift tube will cause a sharp rise in the maximum electric field is also shown. This phenomenon is contrary to superconducting cavity design principles in which the cavity geometry needs to be optimized to reduce the maximum electric field to avoid field emission. We propose a variable diameter superconducting CH cavity design to solve this conflict. The simulation of the variable diameter superconducting CH cavity shows that this method is feasible.

Adjusting the accelerating field distribution of a superconducting CH cavity

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Adjusting the accelerating field distribution of a superconducting CH cavity

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