Cyclotrons2019 - List of Authors (Li, M.)

Paper	Title	Page
MOP006	The Design and Simulation on the Extraction System for CYCIAE-50	35
	S. An, F.P. Guan, P. Huang, L.Y. Ji, M. Li, Y.L. Lv, S.M. Wei, L.P. Wen, H.D. Xie, J.S. Xing, T.J. Zhang, X. Zheng CIAE, Beijing, People’s Republic of China
	A 50 MeV H⁻ compact cyclotron (CYCIAE-50) as a proton irradiation facility is under construction at China Institute of Atomic Energy. The proton beam with the energy of 30 MeV to 50 MeV and the current of 10 uA will be extracted by a single stripping extraction system. In order to reduce the beam loss, the combination magnet is fixed inside the magnetism yoke. The positions of stripping points for the different extraction energy are calculated and the extracted beam trajectories after stripping foil are simulated in detail in this paper. The extracted beam distribution after stripping foil and the extracted beam characters will be studied in this paper. The beam parameters after extraction will be given by the extracting orbit simulation. The design on the whole stripping extraction system has been finished and will be presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP006
About •	paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
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MOP011	Magnetic Field Measurement and Shimming for a Medical Compact Cyclotron	48
	L.L. Guan, S. An, T. Cui, P. Huang, X.L. Jia, M. Li, F. Wang, T.J. Zhang CIAE, Beijing, People’s Republic of China
	A compact cyclotron is developed by Cyclotron Accelerator Research Center at China Institute of Atomic Energy (CIAE) to extract 14 MeV proton beam for medical radioisotopes production, so as to meet the market demands of early diagnosis of malignant tumors, cardiovascular and cerebrovascular diseases. Owing to the small size and limited space of small medical cyclotrons, critical requirements are imposed on magnetic field measurement. For this reason, a magnetic field measurement system, with high-precision and high-stability, suitable for small cyclotrons is adopted and then an efficient magnetic field shimming method is used, which greatly reduces the construction period. It provides a strong guarantee for the stable operation of medical small cyclotrons.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP011
About •	paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020
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FRA01	A New Solution for Cost Effective, High Average Power (2 GeV, 6 MW) Proton Accelerator and its R&D Activities	334
	T.J. Zhang, S. An, T.J. Bian, F.P. Guan, M. Li, S. Pei, C. Wang, F. Wang, Z.G. Yin CIAE, Beijing, People’s Republic of China
	The 100 MeV compact cyclotron, CYCIAE-100 was approved to start the construction in 2011, and the first proton beam was extracted on July 4, 2014. In 2017, the 200 µA proton beam development was conducted, and in 2018, the production of high power beam from 20 kW to 52 kW had been delivered successfully to the beam dump. Due to the successful construction of 435 tons magnet for CYCIAE-100, it has been proved that the gradient adjustment of magnetic field along radius can effectively enhance the vertical focusing during the isochronous acceleration. This key technology was applied to the general design of a 2 GeV CW proton accelerator, the energy limitation of the isochronous machine is increased from ~1 GeV to 2 GeV, by our contribution of the beam dynamics study for high energy isochronous FFAG. This paper will introduce CIAE’s engineering experience of precision magnet, high power RF systems, and the advantages of beam dynamics simulation based on large-scale parallel computing. The cost-effective solution for such a 2 GeV high power circular accelerator complex will be presented in detail after the brief introduction about the high power proton beam production by the CYCIAE-100.
	Slides FRA01 [19.669 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-FRA01
About •	paper received ※ 15 September 2019 paper accepted ※ 23 June 2020 issue date ※ 20 June 2020
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Paper

Title

Page

The Design and Simulation on the Extraction System for CYCIAE-50

35

S. An, F.P. Guan, P. Huang, L.Y. Ji, M. Li, Y.L. Lv, S.M. Wei, L.P. Wen, H.D. Xie, J.S. Xing, T.J. Zhang, X. Zheng
CIAE, Beijing, People’s Republic of China

A 50 MeV H⁻ compact cyclotron (CYCIAE-50) as a proton irradiation facility is under construction at China Institute of Atomic Energy. The proton beam with the energy of 30 MeV to 50 MeV and the current of 10 uA will be extracted by a single stripping extraction system. In order to reduce the beam loss, the combination magnet is fixed inside the magnetism yoke. The positions of stripping points for the different extraction energy are calculated and the extracted beam trajectories after stripping foil are simulated in detail in this paper. The extracted beam distribution after stripping foil and the extracted beam characters will be studied in this paper. The beam parameters after extraction will be given by the extracting orbit simulation. The design on the whole stripping extraction system has been finished and will be presented in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP006

About •

paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

Export •

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

MOP011

Magnetic Field Measurement and Shimming for a Medical Compact Cyclotron

48

L.L. Guan, S. An, T. Cui, P. Huang, X.L. Jia, M. Li, F. Wang, T.J. Zhang
CIAE, Beijing, People’s Republic of China

A compact cyclotron is developed by Cyclotron Accelerator Research Center at China Institute of Atomic Energy (CIAE) to extract 14 MeV proton beam for medical radioisotopes production, so as to meet the market demands of early diagnosis of malignant tumors, cardiovascular and cerebrovascular diseases. Owing to the small size and limited space of small medical cyclotrons, critical requirements are imposed on magnetic field measurement. For this reason, a magnetic field measurement system, with high-precision and high-stability, suitable for small cyclotrons is adopted and then an efficient magnetic field shimming method is used, which greatly reduces the construction period. It provides a strong guarantee for the stable operation of medical small cyclotrons.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP011

About •

paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020

Export •

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

FRA01

A New Solution for Cost Effective, High Average Power (2 GeV, 6 MW) Proton Accelerator and its R&D Activities

334

T.J. Zhang, S. An, T.J. Bian, F.P. Guan, M. Li, S. Pei, C. Wang, F. Wang, Z.G. Yin
CIAE, Beijing, People’s Republic of China

The 100 MeV compact cyclotron, CYCIAE-100 was approved to start the construction in 2011, and the first proton beam was extracted on July 4, 2014. In 2017, the 200 µA proton beam development was conducted, and in 2018, the production of high power beam from 20 kW to 52 kW had been delivered successfully to the beam dump. Due to the successful construction of 435 tons magnet for CYCIAE-100, it has been proved that the gradient adjustment of magnetic field along radius can effectively enhance the vertical focusing during the isochronous acceleration. This key technology was applied to the general design of a 2 GeV CW proton accelerator, the energy limitation of the isochronous machine is increased from ~1 GeV to 2 GeV, by our contribution of the beam dynamics study for high energy isochronous FFAG. This paper will introduce CIAE’s engineering experience of precision magnet, high power RF systems, and the advantages of beam dynamics simulation based on large-scale parallel computing. The cost-effective solution for such a 2 GeV high power circular accelerator complex will be presented in detail after the brief introduction about the high power proton beam production by the CYCIAE-100.

Slides FRA01 [19.669 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-FRA01

About •

paper received ※ 15 September 2019 paper accepted ※ 23 June 2020 issue date ※ 20 June 2020

Export •

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