HIAT2018 - List of Authors (Du, H.)

Paper	Title	Page
MOPB16	Single Heavy Ion Bunch Generation Scheme in BRing at HIAF	61
	D.Y. Yin, H. Du, L.J. Mao, G.D. Shen, J.C. Yang IMP/CAS, Lanzhou, People’s Republic of China
	As the Booster Ring of the High Intensity Heavy-ion Accelerator Facility (HIAF), BRing is a synchrotron which can be able to accumulate and accelerate full ion species provided by iLinac to required energy with RF acceleration system. When accelerating uranium beam(e.g. 238U³⁵⁺), the variation range of the kinetic energy is 17MeV/u-830 MeV/u, and the corresponding revolution frequency range is 0.099MHz-0.447MHz. Because of the low frequency limit value of 0.099MHz, the RF frequency of RF cavity should be h(harmonic number) times of ,thus, there will have h(is equal to harmonic number) bunches after acceleration. To satisfy the extraction requirement, the accelerated multiple bunches should be recollected in one bunch by means of longitudinal manipulation. The different single bunch generation method of debunching and bunch merging are investigated separately, and the beam parameters in different cases are obtained, meanwhile, the optimized RF program during the debunching and bunch merging are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB16
About •	paper received ※ 24 October 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019
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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
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WEPB08	Dynamics Study of a Drift Tube Linac for Both Heavy Ions and Proton	148
	H. Du, Q.Y. Kong, X.N. Li, Z.S. Li, K.D. Wang, J.W. Xia, J.C. Yang, X. Yin, Y.J. Yuan IMP/CAS, Lanzhou, People’s Republic of China
	Funding: Work supported by National Natural Science Foundation of China (11375243, 11405237) and Guangdong Innovative and Entrepreneurial Research Team Program (2016ZT06G373). An accelerator complex for Space Environment Simu-lation and Research Infrastructure (SESRI) has been designed by Institute of Modern Physics (IMP) and will be constructed in Harbin Institute of Technology (HIT). This accelerator consists of an ECR ion source, a linac injector, a synchrotron and 3 research terminals. As an important part of the complex, the linac injector should provide both proton and different kinds of heavy ions, from helium to bismuth, with energy of 5 MeV and 1 MeV/u respectively for the synchrotron. In order to provide beams with the mass to charge ratio (A/Q) range from 1 ’ 6.5(for proton to 209Bi³²⁺) by only one linac injector, a special solution of the main acceleration section DTL is carried out. The relevant dynamics calculations, such as beam matching, stripping process of the hydrogen molecule ion and beam energy spread reducing, are performed by Particle in Cell (PIC) method.
	Poster WEPB08 [2.541 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB08
About •	paper received ※ 19 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019
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WEPB12	Error Analysis and RF Optimization of a Compact RFQ	155
	K.D. Wang, H. Du, Q.Y. Kong, X.N. Li, Z.S. Li, X. Yin IMP/CAS, Lanzhou, People’s Republic of China
	A 162.5 MHz, 7.2 MeV 4-rod radio frequency quadru-ples (RFQ) dynamics design has been finished for injec-tor of a carbon ion cancer therapy facility which is pro-moted by the Institution of Modern Physics (IMP) of the Chinese Academy of Science (CAS). A detailed error analysis was performed after the optimization process. Field flatness error is analysed for determining a RF optimization target. The RF structure is designed based on a new type dynamics design. Electric field of the RF structure is optimized in order to supporting the dynam-ics design. The error analysis and detailed field flatness optimization of this compact RFQ have been presented and discussed in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB12
About •	paper received ※ 19 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)

Paper

Title

Page

Single Heavy Ion Bunch Generation Scheme in BRing at HIAF

61

D.Y. Yin, H. Du, L.J. Mao, G.D. Shen, J.C. Yang
IMP/CAS, Lanzhou, People’s Republic of China

As the Booster Ring of the High Intensity Heavy-ion Accelerator Facility (HIAF), BRing is a synchrotron which can be able to accumulate and accelerate full ion species provided by iLinac to required energy with RF acceleration system. When accelerating uranium beam(e.g. 238U³⁵⁺), the variation range of the kinetic energy is 17MeV/u-830 MeV/u, and the corresponding revolution frequency range is 0.099MHz-0.447MHz. Because of the low frequency limit value of 0.099MHz, the RF frequency of RF cavity should be h(harmonic number) times of ,thus, there will have h(is equal to harmonic number) bunches after acceleration. To satisfy the extraction requirement, the accelerated multiple bunches should be recollected in one bunch by means of longitudinal manipulation. The different single bunch generation method of debunching and bunch merging are investigated separately, and the beam parameters in different cases are obtained, meanwhile, the optimized RF program during the debunching and bunch merging are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB16

About •

paper received ※ 24 October 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019

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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)

WEPB08

Dynamics Study of a Drift Tube Linac for Both Heavy Ions and Proton

148

H. Du, Q.Y. Kong, X.N. Li, Z.S. Li, K.D. Wang, J.W. Xia, J.C. Yang, X. Yin, Y.J. Yuan
IMP/CAS, Lanzhou, People’s Republic of China

Funding: Work supported by National Natural Science Foundation of China (11375243, 11405237) and Guangdong Innovative and Entrepreneurial Research Team Program (2016ZT06G373).
An accelerator complex for Space Environment Simu-lation and Research Infrastructure (SESRI) has been designed by Institute of Modern Physics (IMP) and will be constructed in Harbin Institute of Technology (HIT). This accelerator consists of an ECR ion source, a linac injector, a synchrotron and 3 research terminals. As an important part of the complex, the linac injector should provide both proton and different kinds of heavy ions, from helium to bismuth, with energy of 5 MeV and 1 MeV/u respectively for the synchrotron. In order to provide beams with the mass to charge ratio (A/Q) range from 1 ’ 6.5(for proton to 209Bi³²⁺) by only one linac injector, a special solution of the main acceleration section DTL is carried out. The relevant dynamics calculations, such as beam matching, stripping process of the hydrogen molecule ion and beam energy spread reducing, are performed by Particle in Cell (PIC) method.

Poster WEPB08 [2.541 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB08

About •

paper received ※ 19 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)

WEPB12

Error Analysis and RF Optimization of a Compact RFQ

155

K.D. Wang, H. Du, Q.Y. Kong, X.N. Li, Z.S. Li, X. Yin
IMP/CAS, Lanzhou, People’s Republic of China

A 162.5 MHz, 7.2 MeV 4-rod radio frequency quadru-ples (RFQ) dynamics design has been finished for injec-tor of a carbon ion cancer therapy facility which is pro-moted by the Institution of Modern Physics (IMP) of the Chinese Academy of Science (CAS). A detailed error analysis was performed after the optimization process. Field flatness error is analysed for determining a RF optimization target. The RF structure is designed based on a new type dynamics design. Electric field of the RF structure is optimized in order to supporting the dynam-ics design. The error analysis and detailed field flatness optimization of this compact RFQ have been presented and discussed in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB12

About •

paper received ※ 19 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)