CYCLOTRONS2022 - List of Keywords (quadrupole)

Paper	Title	Other Keywords	Page
WEPO007	The Design of a Superconducting Dipole Magnet Based on Tilted Solenoids	superconducting-magnet, dipole, software, proton	214
	L. Zhu HeFei CAS Ion Medical and Technical Devices, Hefei, Anhui, China, People’s Republic of China J.S. Shen, Z. Wu ASIPP, Hefei, People’s Republic of China J.S. Shen HFCIM, HeFei, People’s Republic of China
	As a core component of proton therapy equipment, the gantry can project the proton beam onto a tumor from different angles. The weight of the gantry with normal conducting magnets(mainly normal dipole magnets and quadrupole magnets) is usually more than 150 tons, which puts forward high requirements for the design, processing and fabrication. Thus, for the realization of light-weight gantry, this article puts forward a design of Canted-Cosine-Theta(CCT) superconducting magnet used on superconducting gantry. Since the superconducting CCT magnet can produce higher magnetic field, for the proton beam with the same magnetic stiffness, the deflection radius of the magnet can be significantly reduced, thus reducing the radius and volume of the gantry. The finite element analysis software and Biot-Savart principle were adopted in this article to establish the method of magnetic field calculation for CCT superconducting magnet, and MATLAB was used to simulation and validation of particle path, which finally realize the design of CCT superconducting magnet that is applied in gantry.
	Poster WEPO007 [6.541 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO007
About •	Received ※ 28 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 10 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRBI02	Design of a Spiral Inflector at iThemba LABS for Injecting the Beam into a Cyclotron	cyclotron, permanent-magnet, simulation, optics	373
	A.H. Barnard iThemba LABS, Somerset West, South Africa
	Funding: iThemba LABS Using a Belmont-Pabot spiral inflector for axial beam injection presents difficulties when matching the beam emittance to the cyclotron acceptance. For an electrostatic inflector one of the potential solutions to this problem is to use transverse electric field gradients to influence and optimise the optics. Here we extend this approach to magnetic spiral inflectors. It is demonstrated that the gradient of the magnetic field along the central trajectory can be controlled by an appropriate permanent magnet inflector design, and that these gradients have a large influence on the optics. The transverse gradients are numerically optimised and the performance compared to an optimised electrostatic spiral inflector. A faster numerical method for accurately determining the electric field of an electrostatic inflector is also presented.
	Slides FRBI02 [1.872 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-FRBI02
About •	Received ※ 31 December 2022 — Revised ※ 26 January 2023 — Accepted ※ 28 January 2023 — Issue date ※ 19 May 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WEPO007

The Design of a Superconducting Dipole Magnet Based on Tilted Solenoids

superconducting-magnet, dipole, software, proton

214

L. Zhu
HeFei CAS Ion Medical and Technical Devices, Hefei, Anhui, China, People’s Republic of China
J.S. Shen, Z. Wu
ASIPP, Hefei, People’s Republic of China
J.S. Shen
HFCIM, HeFei, People’s Republic of China

As a core component of proton therapy equipment, the gantry can project the proton beam onto a tumor from different angles. The weight of the gantry with normal conducting magnets(mainly normal dipole magnets and quadrupole magnets) is usually more than 150 tons, which puts forward high requirements for the design, processing and fabrication. Thus, for the realization of light-weight gantry, this article puts forward a design of Canted-Cosine-Theta(CCT) superconducting magnet used on superconducting gantry. Since the superconducting CCT magnet can produce higher magnetic field, for the proton beam with the same magnetic stiffness, the deflection radius of the magnet can be significantly reduced, thus reducing the radius and volume of the gantry. The finite element analysis software and Biot-Savart principle were adopted in this article to establish the method of magnetic field calculation for CCT superconducting magnet, and MATLAB was used to simulation and validation of particle path, which finally realize the design of CCT superconducting magnet that is applied in gantry.

Poster WEPO007 [6.541 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO007

About •

Received ※ 28 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 10 July 2023

Cite •

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

FRBI02

Design of a Spiral Inflector at iThemba LABS for Injecting the Beam into a Cyclotron

cyclotron, permanent-magnet, simulation, optics

373

A.H. Barnard
iThemba LABS, Somerset West, South Africa

Funding: iThemba LABS
Using a Belmont-Pabot spiral inflector for axial beam injection presents difficulties when matching the beam emittance to the cyclotron acceptance. For an electrostatic inflector one of the potential solutions to this problem is to use transverse electric field gradients to influence and optimise the optics. Here we extend this approach to magnetic spiral inflectors. It is demonstrated that the gradient of the magnetic field along the central trajectory can be controlled by an appropriate permanent magnet inflector design, and that these gradients have a large influence on the optics. The transverse gradients are numerically optimised and the performance compared to an optimised electrostatic spiral inflector. A faster numerical method for accurately determining the electric field of an electrostatic inflector is also presented.

Slides FRBI02 [1.872 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-FRBI02

About •

Received ※ 31 December 2022 — Revised ※ 26 January 2023 — Accepted ※ 28 January 2023 — Issue date ※ 19 May 2023

Cite •

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