SRF2013 - List of Authors (Yue, W.M.)

Paper

Title

Page

SRF Cavities for ADS Project in China

868

Y. He, W.M. Yue, S.H. Zhang
IMP, Lanzhou, People's Republic of China
J.P. Dai, Z.Q. Li, Z.C. Liu, W.M. Pan
IHEP, Beijing, People's Republic of China
X.Y. Lu
PKU, Beijing, People's Republic of China

The driver linac for ADS project in China is full superconducting downstream of Radio Frequecy Quadrupole Accelerator. It is a key technology R&D stage of the project from 2011 to 2015. Superconducting HWR, Spoke, and elliptical cavities are all involved in the project. The prototypes of 162.5 MHz HWR010, 325 MHz Spoke012, 325 MHz Spoke021, 325 MHz Spoke040, and 650 MHz elliptical 063 are being developed at IMP and IHEP in China. A small number of HWR010 and Spoke012 have been produced and vertically tested. The first prototype of Spoke021 were tested too. The design, performances, fabrication, suface processing, and testing of all cavities will be presented in the talk. The design improvement of the cavities in the future will also be discussed.

Slides THIOD01 [13.465 MB]

THP015

Design of a 325MHz β=0.21 Single Spoke Cavity at IMP

S.C. Huang, S. He, Y. He, Y.L. Huang, T.C. Jiang, R.X. Wang, M.X. Xu, W.M. Yue
IMP, Lanzhou, People's Republic of China

A Single Spoke cavity has been designed for Chinese Accelerator Driven System(C-ADS) Project at IMP. In this paper, we describe the geometric and mechanical optimization of Single Spoke Cavity ,using 3D software CST-MWS and ANSYS. The goal of optimization is to minimize the ratio of Bpk/Eacc and Epk/Eacc, maximize G*R/Q. Finally, some analysis of Power coupler are also presented.

THP016

DEVELOPMENT OF THE SUPERCONDUCTING HALF WAVE RESONATOR FOR INJECTOR II IN C-ADS

923

W.M. Yue, W. Chang, S. He, Y. He, S.C. Huang, Y.L. Huang, T.C. Jiang, F.F. Wang, R.X. Wang, M.X. Xu, C. Zhang, S.H. Zhang, S.X. Zhang
IMP, Lanzhou, People's Republic of China

The Development of the Half Wave Resonator (HWR010) is based on the China ADS. The HWR010 operates at 162.5 MHz and can provide more than 0.78 MV of accelerating voltage per cavity for proton withβopt=0.10. We have designed the HWR010 in 2011. A copper model has been fabricated to test the HWR fabrication procedure. Five HWR010s have been fabricated in 2012. The HWR010s has finished the vertical testing and the Q0 is 4·10⁸ at Epeak = 45 MeV/m, and one of the HWR010s has been vertical tested with helium vessel. The slow tuner and high power coupler for this HWR have been developed and tested.

THP081

Development of a Slow Tuner for the 162.5 MHz Superconducting Half-Wave Resonator in IMP

1115

S. He, Y. He, Y.L. Huang, L.B. Liu, F.F. Wang, R.X. Wang, X.W. Wang, W.M. Yue, S.H. Zhang, H.W. Zhao
IMP, Lanzhou, People's Republic of China

Funding: This work is supported by Strategic Priority Research Program of CAS (XDA0302)and National Natural Science Foundation of China (91026004)
Within the framework of the C-ADS project, IMP has proposed a 162.5MHz HWR Superconducting cavity for low energy section(β=0.09) of high power proton linear accelerators. A compact slow tuner has been developed for final tuning of the resonance frequency of the cavity after cooling down to operating temperature and to compensate microphonics and Lorentz force detuning. The slow tuner is driven by an external stepper motor and gear box for coarse cavity adjustment. To reduce the force requirements of the actuator, a lever arm and scissor jack mechanism have been applied. The tuner design and recent results of warm tests as the first prototype are presented.

Paper	Title	Page
THIOD01	SRF Cavities for ADS Project in China	868
	Y. He, W.M. Yue, S.H. Zhang IMP, Lanzhou, People's Republic of China J.P. Dai, Z.Q. Li, Z.C. Liu, W.M. Pan IHEP, Beijing, People's Republic of China X.Y. Lu PKU, Beijing, People's Republic of China
	The driver linac for ADS project in China is full superconducting downstream of Radio Frequecy Quadrupole Accelerator. It is a key technology R&D stage of the project from 2011 to 2015. Superconducting HWR, Spoke, and elliptical cavities are all involved in the project. The prototypes of 162.5 MHz HWR010, 325 MHz Spoke012, 325 MHz Spoke021, 325 MHz Spoke040, and 650 MHz elliptical 063 are being developed at IMP and IHEP in China. A small number of HWR010 and Spoke012 have been produced and vertically tested. The first prototype of Spoke021 were tested too. The design, performances, fabrication, suface processing, and testing of all cavities will be presented in the talk. The design improvement of the cavities in the future will also be discussed.
	Slides THIOD01 [13.465 MB]

THP015	Design of a 325MHz β=0.21 Single Spoke Cavity at IMP
	S.C. Huang, S. He, Y. He, Y.L. Huang, T.C. Jiang, R.X. Wang, M.X. Xu, W.M. Yue IMP, Lanzhou, People's Republic of China
	A Single Spoke cavity has been designed for Chinese Accelerator Driven System(C-ADS) Project at IMP. In this paper, we describe the geometric and mechanical optimization of Single Spoke Cavity ,using 3D software CST-MWS and ANSYS. The goal of optimization is to minimize the ratio of Bpk/Eacc and Epk/Eacc, maximize G*R/Q. Finally, some analysis of Power coupler are also presented.

THP016	DEVELOPMENT OF THE SUPERCONDUCTING HALF WAVE RESONATOR FOR INJECTOR II IN C-ADS	923
	W.M. Yue, W. Chang, S. He, Y. He, S.C. Huang, Y.L. Huang, T.C. Jiang, F.F. Wang, R.X. Wang, M.X. Xu, C. Zhang, S.H. Zhang, S.X. Zhang IMP, Lanzhou, People's Republic of China
	The Development of the Half Wave Resonator (HWR010) is based on the China ADS. The HWR010 operates at 162.5 MHz and can provide more than 0.78 MV of accelerating voltage per cavity for proton withβopt=0.10. We have designed the HWR010 in 2011. A copper model has been fabricated to test the HWR fabrication procedure. Five HWR010s have been fabricated in 2012. The HWR010s has finished the vertical testing and the Q0 is 4·10⁸ at Epeak = 45 MeV/m, and one of the HWR010s has been vertical tested with helium vessel. The slow tuner and high power coupler for this HWR have been developed and tested.

THP081	Development of a Slow Tuner for the 162.5 MHz Superconducting Half-Wave Resonator in IMP	1115
	S. He, Y. He, Y.L. Huang, L.B. Liu, F.F. Wang, R.X. Wang, X.W. Wang, W.M. Yue, S.H. Zhang, H.W. Zhao IMP, Lanzhou, People's Republic of China
	Funding: This work is supported by Strategic Priority Research Program of CAS (XDA0302)and National Natural Science Foundation of China (91026004) Within the framework of the C-ADS project, IMP has proposed a 162.5MHz HWR Superconducting cavity for low energy section(β=0.09) of high power proton linear accelerators. A compact slow tuner has been developed for final tuning of the resonance frequency of the cavity after cooling down to operating temperature and to compensate microphonics and Lorentz force detuning. The slow tuner is driven by an external stepper motor and gear box for coarse cavity adjustment. To reduce the force requirements of the actuator, a lever arm and scissor jack mechanism have been applied. The tuner design and recent results of warm tests as the first prototype are presented.