Mechanical analysis of low <em>β</em> 162.5 MHz taper HWR cavity

Fan Peiliang; Zhu Feng; Zhong Hutianxiang; Quan Shengwen; Liu Kexin

doi:10.11884/HPLPB201628.125103

Volume 28 Issue 04

Mar. 2016

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Fan Peiliang, Zhu Feng, Zhong Hutianxiang, et al. Mechanical analysis of low β 162.5 MHz taper HWR cavity[J]. High Power Laser and Particle Beams, 2016, 28: 045103. doi: 10.11884/HPLPB201628.125103

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Fan Peiliang, Zhu Feng, Zhong Hutianxiang, et al. Mechanical analysis of low β 162.5 MHz taper HWR cavity[J]. High Power Laser and Particle Beams, 2016, 28: 045103. doi: 10.11884/HPLPB201628.125103

Fan Peiliang, Zhu Feng, Zhong Hutianxiang, et al. Mechanical analysis of low β 162.5 MHz taper HWR cavity[J]. High Power Laser and Particle Beams, 2016, 28: 045103. doi: 10.11884/HPLPB201628.125103

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Mechanical analysis of low β 162.5 MHz taper HWR cavity

doi: 10.11884/HPLPB201628.125103

1.
Institute of Heavy Ion Physics,Peking University,Beijing 100871,China;
2.
Institute of Fluid Physics,CAEP,Mianyang 621900,China

Publish Date: 2016-04-15

Abstract

Abstract

Peking University is designing a superconducting taper-type half-wave resonator (HWR) with frequency of 162.5 MHz and of 0.09 for high current proton beam (about 100 mA) and deuteron beam (about 50 mA) acceleration. For this kind of SRF cavity, mechanical analysis is important to predict the frequency shift caused by the cavity deformation. ANSYS codes are used to analyse the frequency shift caused by helium bath pressure and Lorentz force, and the tuning range. Simulation results show that this HWR cavity has pressure sensitivity as low as 31.1 Hz/kPa and Lorentz force detuning coefficient of －0.41 Hz/(MVm-1)2. The tuning range of the cavity is 177 kHz which is wide enough for compensating the possible frequency shift. The mechanical property of the cavity permits the cavitys stable operation.
- half-wave resonator,
- tuning,
- Lorentz force detuning,
- helium pressure detuning

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