Three-dimensional multi-physics analysis and commissioning frequency tuning strategy of a radio-frequency quadrupole accelerator

Three-dimensional multi-physics analysis and commissioning frequency tuning strategy of a radio-frequency quadrupole accelerator
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射频四极加速器三维多物理分析及调试调频策略

DOI:
10.1016/j.nima.2017.06.004
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发表时间:
2017-09
期刊:
NIMA
影响因子:
--
通讯作者:
Zhao Hongwei
Zhao Hongwei
中科院分区:
其他
文献类型:
--
作者:
Ma Wei;Lu Liang;Liu Ting;Xu Xianbo;Sun Liepeng;Li Chenxing;Shi Longbo;Wang Wenbin;He Yuan;Zhao Hongwei

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射频四极杆(RFQ)的谐振频率稳定性是调试过程中的一个重要问题。功率在RFQ内表面的耗散会使腔体升温,导致腔体温度升高和结构变形,特别是在连续波RFQ中,这会引起谐振频率的偏移。对RFQ腔体的温升、变形和频移进行模拟具有重要意义。冷却水带走电源,保持频率稳定。同时,可以通过调节水温来调节RFQ谐振频率。本文对低能加速器设备(LEAF) RFQ进行了详细的三维多物理场分析,并研究了调试频率调谐策略。
The resonant frequency stability of the radio frequency quadrupole (RFQ) is an important concern during commissioning. The power dissipated on the RFQ internal surface will heat the cavity and lead to a temperature rise and a structural deformation, especially in the continuous wave (CW) RFQs, which will cause the resonant frequency shifts. It is important to simulate the temperature rise, the deformation and the frequency shift of the RFQ cavity. The cooling water takes away the power to maintain the frequency stability. Meanwhile, the RFQ resonant frequency can be tuned by adjusting the water temperature. In this paper, a detailed three-dimensional multi-physics analysis of the Low Energy Accelerator Facility (LEAF) RFQ will be presented and a commissioning frequency tuning strategy will be studied.
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