HIAT2018 - List of Authors (Zhao, H.W.)

Paper	Title	Page
MOZBA01	Present Status of HIRFL Complex in Lanzhou	18
	Y.J. Yuan, D.Q. Gao, L.Z. Ma, L.J. Mao, R.S. Mao, J. Meng, Y.W. Su, L.T. Sun, Y.Y. Wang, J.X. Wu, J.W. Xia, G.Q. Xiao, Z. Xu, J.C. Yang, W.Q. Yang, Q.G. Yao, X. Yin, B. Zhang, W. Zhang, H.W. Zhao, Z.Z. Zhou IMP/CAS, Lanzhou, People’s Republic of China
	Heavy Ion Research Facility in Lanzhou (HIRFL) is a cyclotron, synchrotron and storage ring accelerator complex, which accelerates ions of hydrogen to uranium from low to medium energy. Since the complete of HIRFL-CSR project in 2008, under the support from CAS, efforts have been put to improve the infrastructure for machine performance, including improvement of EMC environments, power distribution stations, PS stations, cooling water system, RF system of cyclotrons and adoption of EPICS control system, etc. New generation SC ECR source-SECRAL2 with high performance is put into operation. Experiments of electron cooling with pulsed electron beam are performed for the 1st time. Stochastic cooling and laser cooling are realized in CSRe. The performance of RIBLL2 and CSRe are gradu-ally improved. The ISO mode of CSRe for precise atomic mass measurements is well studied and reaches state-of-art mass resolution of storage rings. The operation status and enhancement plan of HIRFL will be briefly reported in this paper.
	Slides MOZBA01 [37.124 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOZBA01
About •	paper received ※ 20 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)

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

MOPB10	Development of an All Permanent Magnet ECR Ion Source for Low and Medium Charge State Ions Production	53
	J.Q. Li, Y. Cao, X. Fang, J.W. Guo, L.B. Li, W. Lu, B.H. Ma, L.T. Sun, H. Wang, Y. Yang, Y.H. Zhai, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	Funding: Work supported by CAS (QYZDB-SSW-JSC025), MOST (contract No. 2014CB845500), and NSF (contract No. 11221064). An all permanent magnet Electron Cyclotron Reso-nance ion source-LAPECR1U (Lanzhou All Permanent magnet ECR ion source no.1 Upgraded), has been built at IMP in 2017 to satisfy the requirements of LEAF (Low Energy intense-highly-charged ion Accelerator Facility) for first two years commissioning. LAPECR1U was designed to be operated at 14.5 GHz to produce intense low and medium charge state ion beams. LAPECR1U features a compact structure, small size, and low cost. A cone-shape iron yoke in injection side and an iron plasma electrode in extraction side were used to enhance the axial magnetic field strength. The typical parameters and the preliminary beam results of the source are given in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB10
About •	paper received ※ 19 October 2018 paper accepted ※ 24 October 2018 issue date ※ 05 November 2019
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MOPB15	Development of a Pepper Pot Probe to Measure the Four-Dimensional Emittance of Low Energy Beam of Electron Cyclotron Resonance Ion Source at IMP	57
	X. Fang, Y. Cao, R.F. Chen, X.X. Li, W. Lu, B.H. Ma, C. Qian, L.T. Sun, H. Wang, J.X. Wu, Y. Yang, Y.J. Yuan, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	The ion beams extracted from an Electron Cyclotron Resonance (ECR) ion source always exist strong transverse coupling effect that is caused by the field of the axis mirror magnets and the extraction solenoid. A Pepper Pot probe was developed and used to obtain the full four-dimensional phase space distribution of the low energy beam extracted from the ECR ion source at IMP. This paper describes the design of the Pepper Pot, the setup configuration, the detailed image processing procedure, especially the analysis results verification compared to another type emittance meter. The first four-dimensional emittance is also determined through the Pepper Pot probe. The transverse phase space distribution measurement data of oxygen beams from the LECR4 experimental platform are presented and discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB15
About •	paper received ※ 21 October 2018 paper accepted ※ 26 October 2018 issue date ※ 05 November 2019
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TUZAA02	Highly Charged ECR Ion Source Development at IMP	82
	L.T. Sun, Y. Cao, X. Fang, Y.C. Feng, J.W. Guo, W. Huang, J.Q. Li, L.B. Li, L.X. Li, W. Lu, H.Y. Ma, L.Z. Ma, Y.M. Ma, Z. Shen, B.M. Wu, W. Wu, Y. Yang, W.H. Zhang, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	Highly charged ECR ion source development plays an important role in the heavy ion accelerators advancement at IMP, such as HIRFL upgrade, heavy ion treatment complex HIMM, future heavy ion facility HIAF, and so on. As requested by those projects, many high performance highly charged ECR ion sources with different technologies have been built, or under development. The representative ion sources are superconducting ECR ion sources SECRAL and recently built SECRAL-II, room temperature LECR4 ion source with an innovative evaporative cooling method, permanent magnet ECR ion sources of LAPECR series, and a 45 GHz 4th generation ECR ion source FECR. In this talk, a general review of highly charged ECR ion sources will be presented. The typical performances, operation status, as well as the future developments will be discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-TUZAA02
About •	paper received ※ 09 November 2018 paper accepted ※ 11 December 2018 issue date ※ 05 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEYAA01	Commissioning of China ADS Demo Linac and Baseline Design of CiADS Project	112
	S.H. Liu, W.L. Chen, W.P. Dou, Y. He, H. Jia, Y.S. Qin, Z.J. Wang, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	China Accelerator Driven Subcritical System (C-ADS) program was launched in China in 2011, which aims to design and build an ADS demonstration facility with the capability of more than 10 MW thermal power in multiple phases lasting about 20 years. In the first phase, a demo linac has been constructed and commissioned successfully to demonstrate the key technologies of the high-power CW mode superconducting linac. Followed the China ADS roadmap, a superconducting driver linac with 500MeV and 5mA proton beam is designed for the second phase of China Initiative Accelerator Driven Subcritical System (CiADS) program. The commissioning results of the China ADS 25 MeV demo linac and the RAMI oriented beam physics design of CiADS linac are presented in this paper.
	Slides WEYAA01 [17.291 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEYAA01
About •	paper received ※ 25 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)

WEOYA03	Design and Beam Commissioning of the LEAF-RFQ	135
	L. Lu, Y. He, H. Jia, W. Ma, L.B. Shi, L.T. Sun, L.P. Sun, Y. Yang, Y.H. Zhai, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China
	An 81.25 MHz continuous wave (CW) radio frequency quadrupole (RFQ) accelerator has been developed and fabricated for the Low Energy Accelerator Facility (LEAF) by the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). The operation frequency is 81.25 MHz and the inter-vane voltage is a constant of 70 kV. It took about 44 hours continuous conditioning to reach RF power of 75 kW which is 1.1 time of the maximum designed operation power, and the CW operation of He⁺ beam and N₂+ beam had successfully accelerated to the designed energy of 0.5 MeV/u. Both the results of the high power test and the beam test will be presented in this paper.
	Slides WEOYA03 [10.750 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOYA03
About •	paper received ※ 20 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

Present Status of HIRFL Complex in Lanzhou

18

Y.J. Yuan, D.Q. Gao, L.Z. Ma, L.J. Mao, R.S. Mao, J. Meng, Y.W. Su, L.T. Sun, Y.Y. Wang, J.X. Wu, J.W. Xia, G.Q. Xiao, Z. Xu, J.C. Yang, W.Q. Yang, Q.G. Yao, X. Yin, B. Zhang, W. Zhang, H.W. Zhao, Z.Z. Zhou
IMP/CAS, Lanzhou, People’s Republic of China

Heavy Ion Research Facility in Lanzhou (HIRFL) is a cyclotron, synchrotron and storage ring accelerator complex, which accelerates ions of hydrogen to uranium from low to medium energy. Since the complete of HIRFL-CSR project in 2008, under the support from CAS, efforts have been put to improve the infrastructure for machine performance, including improvement of EMC environments, power distribution stations, PS stations, cooling water system, RF system of cyclotrons and adoption of EPICS control system, etc. New generation SC ECR source-SECRAL2 with high performance is put into operation. Experiments of electron cooling with pulsed electron beam are performed for the 1st time. Stochastic cooling and laser cooling are realized in CSRe. The performance of RIBLL2 and CSRe are gradu-ally improved. The ISO mode of CSRe for precise atomic mass measurements is well studied and reaches state-of-art mass resolution of storage rings. The operation status and enhancement plan of HIRFL will be briefly reported in this paper.

Slides MOZBA01 [37.124 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOZBA01

About •

paper received ※ 20 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)

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

Export •

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

MOPB10

Development of an All Permanent Magnet ECR Ion Source for Low and Medium Charge State Ions Production

53

J.Q. Li, Y. Cao, X. Fang, J.W. Guo, L.B. Li, W. Lu, B.H. Ma, L.T. Sun, H. Wang, Y. Yang, Y.H. Zhai, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

Funding: Work supported by CAS (QYZDB-SSW-JSC025), MOST (contract No. 2014CB845500), and NSF (contract No. 11221064).
An all permanent magnet Electron Cyclotron Reso-nance ion source-LAPECR1U (Lanzhou All Permanent magnet ECR ion source no.1 Upgraded), has been built at IMP in 2017 to satisfy the requirements of LEAF (Low Energy intense-highly-charged ion Accelerator Facility) for first two years commissioning. LAPECR1U was designed to be operated at 14.5 GHz to produce intense low and medium charge state ion beams. LAPECR1U features a compact structure, small size, and low cost. A cone-shape iron yoke in injection side and an iron plasma electrode in extraction side were used to enhance the axial magnetic field strength. The typical parameters and the preliminary beam results of the source are given in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB10

About •

paper received ※ 19 October 2018 paper accepted ※ 24 October 2018 issue date ※ 05 November 2019

Export •

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

MOPB15

Development of a Pepper Pot Probe to Measure the Four-Dimensional Emittance of Low Energy Beam of Electron Cyclotron Resonance Ion Source at IMP

57

X. Fang, Y. Cao, R.F. Chen, X.X. Li, W. Lu, B.H. Ma, C. Qian, L.T. Sun, H. Wang, J.X. Wu, Y. Yang, Y.J. Yuan, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

The ion beams extracted from an Electron Cyclotron Resonance (ECR) ion source always exist strong transverse coupling effect that is caused by the field of the axis mirror magnets and the extraction solenoid. A Pepper Pot probe was developed and used to obtain the full four-dimensional phase space distribution of the low energy beam extracted from the ECR ion source at IMP. This paper describes the design of the Pepper Pot, the setup configuration, the detailed image processing procedure, especially the analysis results verification compared to another type emittance meter. The first four-dimensional emittance is also determined through the Pepper Pot probe. The transverse phase space distribution measurement data of oxygen beams from the LECR4 experimental platform are presented and discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOPB15

About •

paper received ※ 21 October 2018 paper accepted ※ 26 October 2018 issue date ※ 05 November 2019

Export •

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

TUZAA02

Highly Charged ECR Ion Source Development at IMP

82

L.T. Sun, Y. Cao, X. Fang, Y.C. Feng, J.W. Guo, W. Huang, J.Q. Li, L.B. Li, L.X. Li, W. Lu, H.Y. Ma, L.Z. Ma, Y.M. Ma, Z. Shen, B.M. Wu, W. Wu, Y. Yang, W.H. Zhang, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

Highly charged ECR ion source development plays an important role in the heavy ion accelerators advancement at IMP, such as HIRFL upgrade, heavy ion treatment complex HIMM, future heavy ion facility HIAF, and so on. As requested by those projects, many high performance highly charged ECR ion sources with different technologies have been built, or under development. The representative ion sources are superconducting ECR ion sources SECRAL and recently built SECRAL-II, room temperature LECR4 ion source with an innovative evaporative cooling method, permanent magnet ECR ion sources of LAPECR series, and a 45 GHz 4th generation ECR ion source FECR. In this talk, a general review of highly charged ECR ion sources will be presented. The typical performances, operation status, as well as the future developments will be discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-TUZAA02

About •

paper received ※ 09 November 2018 paper accepted ※ 11 December 2018 issue date ※ 05 November 2019

Export •

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

WEYAA01

Commissioning of China ADS Demo Linac and Baseline Design of CiADS Project

112

S.H. Liu, W.L. Chen, W.P. Dou, Y. He, H. Jia, Y.S. Qin, Z.J. Wang, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

China Accelerator Driven Subcritical System (C-ADS) program was launched in China in 2011, which aims to design and build an ADS demonstration facility with the capability of more than 10 MW thermal power in multiple phases lasting about 20 years. In the first phase, a demo linac has been constructed and commissioned successfully to demonstrate the key technologies of the high-power CW mode superconducting linac. Followed the China ADS roadmap, a superconducting driver linac with 500MeV and 5mA proton beam is designed for the second phase of China Initiative Accelerator Driven Subcritical System (CiADS) program. The commissioning results of the China ADS 25 MeV demo linac and the RAMI oriented beam physics design of CiADS linac are presented in this paper.

Slides WEYAA01 [17.291 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEYAA01

About •

paper received ※ 25 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)

WEOYA03

Design and Beam Commissioning of the LEAF-RFQ

135

L. Lu, Y. He, H. Jia, W. Ma, L.B. Shi, L.T. Sun, L.P. Sun, Y. Yang, Y.H. Zhai, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China

An 81.25 MHz continuous wave (CW) radio frequency quadrupole (RFQ) accelerator has been developed and fabricated for the Low Energy Accelerator Facility (LEAF) by the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). The operation frequency is 81.25 MHz and the inter-vane voltage is a constant of 70 kV. It took about 44 hours continuous conditioning to reach RF power of 75 kW which is 1.1 time of the maximum designed operation power, and the CW operation of He⁺ beam and N₂+ beam had successfully accelerated to the designed energy of 0.5 MeV/u. Both the results of the high power test and the beam test will be presented in this paper.

Slides WEOYA03 [10.750 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOYA03

About •

paper received ※ 20 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)