Measurement of the transfer function for a spoke cavity of C-ADS Injector I
| Autor: | Shao-Zhe Wang, Qun-Yao Wang, Guang-Wei Wang, Haiying Lin, Yi Sun, Xiang Zheng, Rong Liu, Xuefang Huang, Mu-Yuan Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Accelerator Physics (physics.acc-ph)
Physics Nuclear and High Energy Physics 010308 nuclear & particles physics Acoustics Lorentz transformation Bandwidth (signal processing) FOS: Physical sciences Astronomy and Astrophysics Tuner Injector 01 natural sciences Transfer function law.invention symbols.namesake Quality (physics) law Excited state 0103 physical sciences symbols Physics - Accelerator Physics 010306 general physics Instrumentation Lorentz force |
| Popis: | The spoke cavities mounted in the China Accelerator Driven sub-critical System (C-ADS) have high quality factor(Q) and very small bandwidth, making them very sensitive to mechanical perturbations whether external or self-induced. The transfer function is used to characterize the response of the cavity eigen frequency to the perturbations. This paper describes a method to measure the transfer function of a spoke cavity. The measured Lorentz transfer function shows there are 206 Hz and 311 Hz mechanical eigenmodes excited by Lorentz force in the cavity of C-ADS, and the measured piezo fast tuner transfer function shows there are 12 mechanical eigenmodes from 0 to 500 Hz. According to these results, some effective measures have been taken to weaken the influence from helium pressure fluctuation, avoid mechanical resonances and improve the reliability of RF system. 5 pages, 5 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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