HIAT2018 - List of Authors (Wei, Y.)

Paper	Title	Page
MOPB05	Commissioning Progress of LEAF at IMP	42
	Y. Yang, W.P. Dou, X. Fang, Y.H. Guo, H. Jia, P. Jiang, L. Jing, X.J. Liu, L. Lu, W. Lu, W. Ma, L.T. Sun, L.P. Sun, Y. Wei, Y.H. Zhai, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	A Low Energy intense-highly-charged ion Accelerator Facility (LEAF), which is mainly consist of an 45 GHz superconducting ECR ion source, LEBT and an 81.25 MHz 4-vane RFQ, was designed to produce and accelerate heavy ions, from helium to uranium with A/Q between 2 and 7, to the energy of 0.5 MeV/u. The typical beam intensity is designed up to 2 emA CW for the uranium beam. The project was launched in 2015 and has been successfully commissioned with He⁺ (A/Q=4), N₂+ (A/Q=7) beam and accelerated the beams in the CW regime to the designed energy of 0.5 MeV/u. Beam commissioning results of He⁺ beam have been reported previously. This paper presents the details of N₂+ commissioning and beam studies.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB05
About •	paper received ※ 15 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019
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WEOAA03	Stochastic Cooling Simulation of Rare Isotope Beam and its Secondary Beam	107
	X.J. Hu, Z. Du, L. Jing, Y. Wei, J.X. Wu, Y.J. Yuan, G. Zhu IMP/CAS, Lanzhou, People’s Republic of China
	Stochastic cooling is a broadband feedback system, which is very effective for reducing the beam size without beam loss. It has advantage over electron cooling in cooling low intensity beam with large emittance and mo-mentum spread, which is required for precise study of the decay properties of RIB (Radioactive Ion Beam) using SMS method. This paper mainly concerns on cooling of primary beam and its secondary beam, pointing out the range of mass-to-charge spread that could be cooled for secondary particles. Meanwhile, TOF cooling combined with filter cooling was also studied. The simulation results provide theoretical supports for analysing different ions circulating in the ring at the same time in the experiments.
	Slides WEOAA03 [2.093 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOAA03
About •	paper received ※ 19 October 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPB03	Multi-physics Analysis of a CW Four-rod RFQ	138
	Z.S. Li, Y. Cong, H. Du, Y. He, L. Jing, Q.Y. Kong, X.N. Li, J. Meng, G.D. Shen, H.N. Wang, K.D. Wang, Z.J. Wang, Y. Wei, J.X. Wu, J.W. Xia, H.M. Xie, W.J. Xie, X.W. Xu, Z. Xu, J.C. Yang, Y.Q. Yang, X. Yin, Y.J. Yuan, Y. Zhang IMP/CAS, Lanzhou, People’s Republic of China Y.R. Lu, K. Zhu PKU, Beijing, People’s Republic of China
	The new injector SSC-LINAC is under design and con-struction to improve the efficiency and intensity of beams for the Separated-Sector Cyclotron (SSC). This will be accomplished with a normal conducting radio-frequency quadrupole (RFQ) accelerator. To match with the SSC, the RFQ must be operated on Continuous Wave (CW) mode with a frequency of 53.667 MHz. A four-rod structure was adopted for small dimensions of the cavity. While, it was a huge challenge on CW mode. A multi-physics theoretical analysis, including RF, thermal, struc-tural and frequency shift coupling analysis, have been completed in response to the security and stable opera-tion of the RFQ. The experimental measurement of fre-quency shift was also completed, which is consistent with the simulation. In this paper, the results of theoretical analysis and experiment are reported in detail.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB03
About •	paper received ※ 09 November 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Commissioning Progress of LEAF at IMP

42

Y. Yang, W.P. Dou, X. Fang, Y.H. Guo, H. Jia, P. Jiang, L. Jing, X.J. Liu, L. Lu, W. Lu, W. Ma, L.T. Sun, L.P. Sun, Y. Wei, Y.H. Zhai, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

A Low Energy intense-highly-charged ion Accelerator Facility (LEAF), which is mainly consist of an 45 GHz superconducting ECR ion source, LEBT and an 81.25 MHz 4-vane RFQ, was designed to produce and accelerate heavy ions, from helium to uranium with A/Q between 2 and 7, to the energy of 0.5 MeV/u. The typical beam intensity is designed up to 2 emA CW for the uranium beam. The project was launched in 2015 and has been successfully commissioned with He⁺ (A/Q=4), N₂+ (A/Q=7) beam and accelerated the beams in the CW regime to the designed energy of 0.5 MeV/u. Beam commissioning results of He⁺ beam have been reported previously. This paper presents the details of N₂+ commissioning and beam studies.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB05

About •

paper received ※ 15 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOAA03

Stochastic Cooling Simulation of Rare Isotope Beam and its Secondary Beam

107

X.J. Hu, Z. Du, L. Jing, Y. Wei, J.X. Wu, Y.J. Yuan, G. Zhu
IMP/CAS, Lanzhou, People’s Republic of China

Stochastic cooling is a broadband feedback system, which is very effective for reducing the beam size without beam loss. It has advantage over electron cooling in cooling low intensity beam with large emittance and mo-mentum spread, which is required for precise study of the decay properties of RIB (Radioactive Ion Beam) using SMS method. This paper mainly concerns on cooling of primary beam and its secondary beam, pointing out the range of mass-to-charge spread that could be cooled for secondary particles. Meanwhile, TOF cooling combined with filter cooling was also studied. The simulation results provide theoretical supports for analysing different ions circulating in the ring at the same time in the experiments.

Slides WEOAA03 [2.093 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOAA03

About •

paper received ※ 19 October 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPB03

Multi-physics Analysis of a CW Four-rod RFQ

138

Z.S. Li, Y. Cong, H. Du, Y. He, L. Jing, Q.Y. Kong, X.N. Li, J. Meng, G.D. Shen, H.N. Wang, K.D. Wang, Z.J. Wang, Y. Wei, J.X. Wu, J.W. Xia, H.M. Xie, W.J. Xie, X.W. Xu, Z. Xu, J.C. Yang, Y.Q. Yang, X. Yin, Y.J. Yuan, Y. Zhang
IMP/CAS, Lanzhou, People’s Republic of China
Y.R. Lu, K. Zhu
PKU, Beijing, People’s Republic of China

The new injector SSC-LINAC is under design and con-struction to improve the efficiency and intensity of beams for the Separated-Sector Cyclotron (SSC). This will be accomplished with a normal conducting radio-frequency quadrupole (RFQ) accelerator. To match with the SSC, the RFQ must be operated on Continuous Wave (CW) mode with a frequency of 53.667 MHz. A four-rod structure was adopted for small dimensions of the cavity. While, it was a huge challenge on CW mode. A multi-physics theoretical analysis, including RF, thermal, struc-tural and frequency shift coupling analysis, have been completed in response to the security and stable opera-tion of the RFQ. The experimental measurement of fre-quency shift was also completed, which is consistent with the simulation. In this paper, the results of theoretical analysis and experiment are reported in detail.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB03

About •

paper received ※ 09 November 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)