High Power Laser and Particle Beams, Volume. 35, Issue 12, 124007(2023)
Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II
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.
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Ming Liu, Zhenghui Mi, Weimin Pan, Rui Ge, Feisi He, Wenzhong Zhou, Miaofu Xu, Zihan Wang. Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II[J]. High Power Laser and Particle Beams, 2023, 35(12): 124007
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Received: Jul. 21, 2023
Accepted: Sep. 25, 2023
Published Online: Dec. 27, 2023
The Author Email: Mi Zhenghui (mizh@ihep.ac.cn)