ICAP2018 - List of Keywords (cyclotron)

Paper	Title	Other Keywords	Page
SUPAG09	Beam Dynamics Simulations of Medical Cyclotrons and Beam Transfer Lines at IBA	proton, extraction, closed-orbit, electron	104
	J. van de Walle, E. Forton, W.J.G.M. Kleeven, J. Mandrillon, V. Nuttens, E. Van Der Kraaij IBA, Louvain-la-Neuve, Belgium
	The company Ion Beam Applications (IBA), based in Belgium, is specialized in the design and fabrication of cyclotrons for medical applications since more than 30 years. Two main classes of cyclotrons can be distinguished : cyclotrons for radiopharma production (3 MeV up to 70 MeV proton beams) and cyclotrons used in proton therapy (230 MeV proton beam). In this contribution, the developments of computational tools to simulate beam dynamics in the variety of cyclotrons and associated beam lines will be described. The main code for simulating the cyclotron beam dynamics is the ’Advanced Orbit Code’ (AOC) [1]. Examples will be shown of beam dynamics studies in the newly designed Cyclone KIUBE (18 MeV proton cyclotron for PET isotope production), the Cyclone230 and the superconducting synchro-cyclotron (S2C2), both 230 MeV proton cyclotrons for proton therapy. Calculated beam emittances, resonance crossings and beam losses will be shown and their impact on the performance of the machine will be highlighted. A strong emphasis will be put on the beam properties from the S2C2 (proton therapy cyclotron), since unexpected extracted proton beam was discovered and explained by detailed simulations [2] and the beam properties serve as input to subsequent beam line simulation tools. Several tools have been developed to simulate and design transfer lines coupled to the cyclotrons. In radiopharma applications beam losses along the beamline and the beam size on the production target are crucial, since beam intensities are high and radiation damage can be considerable. In proton therapy, beam intensities are very low but the constraints on the beam position, drift (in position, energy and intensity) and size at the patient level are very tight. In both cases a strong predictive power of the calculated beam properties in the transfer lines is needed. The compact proton gantry (CGTR) coupled with the S2C2 in the ProteusONE proton therapy system will be shown in detail. The CGTR is a s [1] W. Kleeven et al., IPAC 2016 proceedings, TUPOY002 [2] J. Van de Walle et al., Cyclotrons2016 proceedings, THB01
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICAP2018-SUPAG09
About •	paper received ※ 19 October 2018 paper accepted ※ 04 December 2018 issue date ※ 26 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

SUPAG10	Design Study of a Fast Kicker Magnet Applied to the Beamline of a Proton Therapy Facility	kicker, proton, simulation, vacuum	110
	W.J. Han Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People’s Republic of China X. Liu, B. Qin HUST, Wuhan, People’s Republic of China
	Funding: Huazhong University Of Science And Technology A proton therapy facility based on an isochronous superconducting cyclotron is under development in HUST (Huazhong University of Science and Technol-ogy). A fast kicker magnet will be installed in the up-stream of the degrader to perform the beam switch function by kicking the proton beam to the down-stream beam stop. The rising and falling time of the kicker is about 100us, and the maximum repetition rate is 500Hz. This paper introduces simulation and opti-mization of the eddy current and dynamic magnetic field of the fast kicker, by using FEM code OPERA-3D. For kicker materials, laminated steel and soft ferrite are compared and the MnZn ferrite is chosen. Design-ing considerations includes the eddy current effect, field hysteresis, and mechanical structure of the kicker will also be introduced.
	Slides SUPAG10 [1.184 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICAP2018-SUPAG10
About •	paper received ※ 19 October 2018 paper accepted ※ 04 December 2018 issue date ※ 26 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

SUPAG09

Beam Dynamics Simulations of Medical Cyclotrons and Beam Transfer Lines at IBA

proton, extraction, closed-orbit, electron

104

J. van de Walle, E. Forton, W.J.G.M. Kleeven, J. Mandrillon, V. Nuttens, E. Van Der Kraaij
IBA, Louvain-la-Neuve, Belgium

The company Ion Beam Applications (IBA), based in Belgium, is specialized in the design and fabrication of cyclotrons for medical applications since more than 30 years. Two main classes of cyclotrons can be distinguished : cyclotrons for radiopharma production (3 MeV up to 70 MeV proton beams) and cyclotrons used in proton therapy (230 MeV proton beam). In this contribution, the developments of computational tools to simulate beam dynamics in the variety of cyclotrons and associated beam lines will be described. The main code for simulating the cyclotron beam dynamics is the ’Advanced Orbit Code’ (AOC) [1]. Examples will be shown of beam dynamics studies in the newly designed Cyclone KIUBE (18 MeV proton cyclotron for PET isotope production), the Cyclone230 and the superconducting synchro-cyclotron (S2C2), both 230 MeV proton cyclotrons for proton therapy. Calculated beam emittances, resonance crossings and beam losses will be shown and their impact on the performance of the machine will be highlighted. A strong emphasis will be put on the beam properties from the S2C2 (proton therapy cyclotron), since unexpected extracted proton beam was discovered and explained by detailed simulations [2] and the beam properties serve as input to subsequent beam line simulation tools. Several tools have been developed to simulate and design transfer lines coupled to the cyclotrons. In radiopharma applications beam losses along the beamline and the beam size on the production target are crucial, since beam intensities are high and radiation damage can be considerable. In proton therapy, beam intensities are very low but the constraints on the beam position, drift (in position, energy and intensity) and size at the patient level are very tight. In both cases a strong predictive power of the calculated beam properties in the transfer lines is needed. The compact proton gantry (CGTR) coupled with the S2C2 in the ProteusONE proton therapy system will be shown in detail. The CGTR is a s
[1] W. Kleeven et al., IPAC 2016 proceedings, TUPOY002
[2] J. Van de Walle et al., Cyclotrons2016 proceedings, THB01

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICAP2018-SUPAG09

About •

paper received ※ 19 October 2018 paper accepted ※ 04 December 2018 issue date ※ 26 January 2019

Export •

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

SUPAG10

Design Study of a Fast Kicker Magnet Applied to the Beamline of a Proton Therapy Facility

kicker, proton, simulation, vacuum

110

W.J. Han
Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People’s Republic of China
X. Liu, B. Qin
HUST, Wuhan, People’s Republic of China

Funding: Huazhong University Of Science And Technology
A proton therapy facility based on an isochronous superconducting cyclotron is under development in HUST (Huazhong University of Science and Technol-ogy). A fast kicker magnet will be installed in the up-stream of the degrader to perform the beam switch function by kicking the proton beam to the down-stream beam stop. The rising and falling time of the kicker is about 100us, and the maximum repetition rate is 500Hz. This paper introduces simulation and opti-mization of the eddy current and dynamic magnetic field of the fast kicker, by using FEM code OPERA-3D. For kicker materials, laminated steel and soft ferrite are compared and the MnZn ferrite is chosen. Design-ing considerations includes the eddy current effect, field hysteresis, and mechanical structure of the kicker will also be introduced.

Slides SUPAG10 [1.184 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICAP2018-SUPAG10

About •

paper received ※ 19 October 2018 paper accepted ※ 04 December 2018 issue date ※ 26 January 2019

Export •

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