CYCLOTRONS2022 - List of Authors (Xu, S.)

Paper	Title	Page
MOPO018	The Magnetic Field Design of a 16 MeV Variable Energy Cyclotron	103
	Z. Wu, K.Z. Ding, J. Zhou ASIPP, Hefei, People’s Republic of China S. Xu HFCIM, HeFei, People’s Republic of China
	The development of a 16 MeV H⁻ cyclotron is in progress at CIM company (Hefei, China). Such machine is designed for radio-isotope production which is used for nuclear medicine. Beam extraction is ensured by means of stripper foils located at different radii to achieve variable extraction energy between 10 and 16 MeV. In this paper, the main magnet design was demonstrated in detail. An AVF magnet with four radial sectors was adopt to get strong axial focusing. The hill angular widths and hill gaps with radius were designed to meet the isochronous magnetic field. The tunes were optimized to avoid dangerous resonance. The result of magnet design was verified by beam dynamics simulations. After the presentation of the magnet design, some results on stripping extraction were also discussed. TOSCA (OPERA-3D) was used to perform 3D magnetic field simulation. An efficient beam simulation code developed by MATLAB was used to do beam dynamics simulations.
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO018
About •	Received ※ 12 February 2023 — Revised ※ 13 February 2023 — Accepted ※ 14 February 2023 — Issue date ※ 10 May 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO013	Magnet Design of a Compact 16 MeV Variable Energy Cyclotron for Isotope Production	330
	S. Xu HFCIM, HeFei, People’s Republic of China K.Z. Ding, F. Jiang, Z. Wu, J. Zhou ASIPP, Hefei, People’s Republic of China W. Wang Wang, Hefei, People’s Republic of China
	A compact isochronous cyclotron, CIMV16, is under research and development at Hefei CAS Ion Medical and Technical Devices Co., Ltd, China (HFCIM).This cyclotron can accelerate negative hydrogen ion to variable energy in the range of 10~16 MeV for the stable production of widely-used medical isotopes in this energy range. It has a maximal diameter of only 1.8 m and adopts three radial-sector poles with the third harmonic acceleration. The design of magnet system and the analysis of final simulated static magnetic field were described in detail in this paper. Meanwhile, two suitable shimming methods were also proposed for later engineering optimization
	Poster THPO013 [1.629 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO013
About •	Received ※ 30 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 11 April 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO014	The Beam Dynamics Simulation of a Variable Energy Cyclotron for Isotope Production	334
	W. Wang Wang, Hefei, People’s Republic of China K.Z. Ding, F. Jiang, J. Zhou ASIPP, Hefei, People’s Republic of China S. Xu HFCIM, HeFei, People’s Republic of China
	The isochronous cyclotron, CIMV16, has been de-signed by Hefei CAS Ion Medical and Technical Devices Co., Ltd, China (HFCIM) for widely used isotope production, which can extract proton with variable energy in range of 10~16 MeV. In this cyclotron, negative hydro-gen ion will be accelerated to 10~16 MeV, and then stripped out two electrons to become proton to be extracted. We have performed beam tracking starting from the ion source to the extraction reference point, and optimized the position of the stripping target to make the beam of different energies converge at radius of 110 cm. The orbit centralization is optimized by the design of first harmonic, and the axial size of extraction beam is also optimized. All the results of beam dynamics simulations will be presented.
	Poster THPO014 [0.731 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO014
About •	Received ※ 16 January 2023 — Revised ※ 27 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 18 February 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

The Magnetic Field Design of a 16 MeV Variable Energy Cyclotron

103

Z. Wu, K.Z. Ding, J. Zhou
ASIPP, Hefei, People’s Republic of China
S. Xu
HFCIM, HeFei, People’s Republic of China

The development of a 16 MeV H⁻ cyclotron is in progress at CIM company (Hefei, China). Such machine is designed for radio-isotope production which is used for nuclear medicine. Beam extraction is ensured by means of stripper foils located at different radii to achieve variable extraction energy between 10 and 16 MeV. In this paper, the main magnet design was demonstrated in detail. An AVF magnet with four radial sectors was adopt to get strong axial focusing. The hill angular widths and hill gaps with radius were designed to meet the isochronous magnetic field. The tunes were optimized to avoid dangerous resonance. The result of magnet design was verified by beam dynamics simulations. After the presentation of the magnet design, some results on stripping extraction were also discussed. TOSCA (OPERA-3D) was used to perform 3D magnetic field simulation. An efficient beam simulation code developed by MATLAB was used to do beam dynamics simulations.

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO018

About •

Received ※ 12 February 2023 — Revised ※ 13 February 2023 — Accepted ※ 14 February 2023 — Issue date ※ 10 May 2023

Cite •

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

THPO013

Magnet Design of a Compact 16 MeV Variable Energy Cyclotron for Isotope Production

330

S. Xu
HFCIM, HeFei, People’s Republic of China
K.Z. Ding, F. Jiang, Z. Wu, J. Zhou
ASIPP, Hefei, People’s Republic of China
W. Wang
Wang, Hefei, People’s Republic of China

A compact isochronous cyclotron, CIMV16, is under research and development at Hefei CAS Ion Medical and Technical Devices Co., Ltd, China (HFCIM).This cyclotron can accelerate negative hydrogen ion to variable energy in the range of 10~16 MeV for the stable production of widely-used medical isotopes in this energy range. It has a maximal diameter of only 1.8 m and adopts three radial-sector poles with the third harmonic acceleration. The design of magnet system and the analysis of final simulated static magnetic field were described in detail in this paper. Meanwhile, two suitable shimming methods were also proposed for later engineering optimization

Poster THPO013 [1.629 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO013

About •

Received ※ 30 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 11 April 2023

Cite •

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

THPO014

The Beam Dynamics Simulation of a Variable Energy Cyclotron for Isotope Production

334

W. Wang
Wang, Hefei, People’s Republic of China
K.Z. Ding, F. Jiang, J. Zhou
ASIPP, Hefei, People’s Republic of China
S. Xu
HFCIM, HeFei, People’s Republic of China

The isochronous cyclotron, CIMV16, has been de-signed by Hefei CAS Ion Medical and Technical Devices Co., Ltd, China (HFCIM) for widely used isotope production, which can extract proton with variable energy in range of 10~16 MeV. In this cyclotron, negative hydro-gen ion will be accelerated to 10~16 MeV, and then stripped out two electrons to become proton to be extracted. We have performed beam tracking starting from the ion source to the extraction reference point, and optimized the position of the stripping target to make the beam of different energies converge at radius of 110 cm. The orbit centralization is optimized by the design of first harmonic, and the axial size of extraction beam is also optimized. All the results of beam dynamics simulations will be presented.

Poster THPO014 [0.731 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO014

About •

Received ※ 16 January 2023 — Revised ※ 27 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 18 February 2023

Cite •

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