Paper |
Title |
Page |
THPME025 |
Low Power Test of a Hybrid Single Cavity Linac |
3274 |
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- L. Lu, Y. He, Q. Jin, C.X. Li, G. Pan, A. Shi, L.B. Shi, L.T. Sun, L.P. Sun, Z.L. Zhang, H.W. Zhao, H. Zhao
IMP, Lanzhou, People's Republic of China
- T. Hattori
NIRS, Chiba-shi, Japan
- N. Hayashizaki
RLNR, Tokyo, Japan
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We fabricated and assembled a hybrid single cavity (HSC) linac which is formed by combining a radio frequency quadrupole (RFQ) structure and a drift tube (DT) structure into one interdigital-H (IH) cavity. ]. The HSC linac was designed as an injector for a cancer facility and was able to be used as a neutron source for boron neutron capture therapy. The injection method of the HSC linac used a direct plasma injection scheme (DPIS), which is considered to be the only method for accelerating a high current heavy ion beam produced by a laser ion source. The input beam current was designed to be 20 mA, which could be produced by a laser ion source. According to the simulations and calculations, the HSC linac could accelerate a 6-mA C6+, beam which satisfies the particle number criteria for cancer therapy use (108~9 ions/pulse). Details of the measurements and evaluations of the assembled HSC linac, and details of a DPIS test using a laser ion source are reported in this paper.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME025
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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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