Paper |
Title |
Page |
THPME027 |
Development of the injector II RFQ for China ADS project |
3280 |
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- Z.L. Zhang, Y.H. Guo, Y. He, H. Jia, C.X. Li, Y. Liu, L. Lu, G. Pan, A. Shi, L.B. Shi, L.P. Sun, W.B. Wang, X.W. Wang, J.X. Wu, Q. Wu, X.B. Xu, B. Zhang, J.H. Zhang, H.W. Zhao, T.M. Zhu
IMP, Lanzhou, People's Republic of China
- M.D. Hoff, A.R. Lambert, D. Li, J.W. Staples, S.P. Virostek
LBNL, Berkeley, California, USA
- C. Zhang
GSI, Darmstadt, Germany
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As one of the main components of the injector II of China ADS LINAC project, an RFQ working at 162.5MHz is used to accelerate proton beams of 15mA from 30 keV to 2.1 MeV. The four vane RFQ has been designed in collaboration with Lawrence Berkeley National Laboratory and built at the workshop of the Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS). Low power test of the cavity have been completed, and it shows the field flatness is within ±1% and the unloaded Q is 12600. RF conditioning has been completed, results of preliminary beam test show the output beam energy is 2.16 MeV with energy spread of 3.5% and the transmission efficiency is 97.9%. Continuous wave (CW) beam of 2.3 mA has been accelerated for more than one hour.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME027
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THPRI059 |
Field Emission Study of RF cavity in Static Magnetic Field |
3905 |
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- T.H. Luo, D. Li
LBNL, Berkeley, California, USA
- W. Gai
ANL, Argonne, Illinois, USA
- J.H. Shao
TUB, Beijing, People's Republic of China
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The RF cavity performance in solenoid magnetic field is crucial for the muon ionization cooling. Previous experiments have shown that the strong external magnetic field can significantly lower the maximum achievable RF voltage in the cavity. The mechanism of this performance degradation has been studied both analytically and experimentally, but so far no conclusive cause has been determined yet. In this paper, we propose an experiment to study the effect of a static B field on the field emission in the RF cavity, which hasn't been investigated before, and which can contribute to the cavity performance degradation in the solenoid field.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI059
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Export • |
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※ LaTeX,
※ Text/Word,
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