Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II

Liu Ming; Mi Zhenghui; Pan Weimin; Ge Rui; He Feisi; Zhou Wenzhong; Xu Miaofu; Wang Zihan

doi:10.11884/HPLPB202335.230227

Volume 35 Issue 12

Nov. 2023

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Liu Ming, Mi Zhenghui, Pan Weimin, et al. Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II[J]. High Power Laser and Particle Beams, 2023, 35: 124007. doi: 10.11884/HPLPB202335.230227

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Liu Ming, Mi Zhenghui, Pan Weimin, et al. Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II[J]. High Power Laser and Particle Beams, 2023, 35: 124007. doi: 10.11884/HPLPB202335.230227

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Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II

doi: 10.11884/HPLPB202335.230227

Liu Ming^{1, 3, 4
,},
Mi Zhenghui^{1, 3, 4
,
,},
Pan Weimin^{1, 3, 4},
Ge Rui^{1, 3, 4},
He Feisi^{1, 3, 4},
Zhou Wenzhong^{1, 2, 3, 4},
Xu Miaofu^{1, 3},
Wang Zihan^{1, 3, 4}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Source Science Center, Dongguan 523803, China
3.
Key Laboratory of Particle Accelerator Physics and Technology, Chinese Academy of Sciences, Beijing 100049, China
4.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2023-07-21
Accepted Date: 2023-09-25
Rev Recd Date: 2023-09-04

Available Online: 2023-11-16

Publish Date: 2023-12-15

Abstract

Abstract

The China Spallation Neutron Source phase II (CNSS-II) is upgraded with superconducting cavity technology, which uses 648 MHz 6-cell superconducting cavity module in the energy range of 165−300 MeV. Three 6-cell superconducting cavities are integrated in each module. The superconducting cavity works in pulse mode. To ensure that the frequency of the superconducting cavity meets the operation requirements at 2 K, each superconducting cavity needs a set of low-temperature tuner to precisely adjust and control its frequency. According to the structure and operation characteristics of the 648 MHz 6-cell superconducting cavity, a low-temperature tuner is designed. The frequency offset of the superconducting cavity is compensated by a fast-slow combination mechanism. The basic performance of the tuner and the dynamic Lorentz detuning of the superconducting cavity in pulse mode are analyzed.
- superconducting cavity,
- tuner,
- dynamic Lorentz detuning,
- piezoelectric ceramics

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References(16)

References

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