CYCLOTRONS2022 - List of Keywords (space-charge)

Paper	Title	Other Keywords	Page
MOBI01	Summary of the Snowmass’21 Workshop on High Power Cyclotrons and FFAs	cyclotron, proton, target, experiment	20
	D. Winklehner, J.R. Alonso MIT, Cambridge, Massachusetts, USA A. Adelmann, M. Haj Tahar PSI, Villigen PSI, Switzerland L. Calabretta INFN/LNS, Catania, Italy H. Okuno RIKEN Nishina Center, Wako, Japan T. Planche TRIUMF, Vancouver, Canada
	In this talk, we summarize the presentations and findings of the "Workshop on High Power Cyclotrons and FFAs" that we held online in September 2021. The workshop was held as part of the 2021 Snowmass Community Exercise, in which the US particle physics community came together in a year-long effort to provide suggestions for a long-term strategy for the field, and the "Accelerators for Neutrinos" subpanel thereof. Topics that were discussed during our high-power cyclotron workshop were the application of cyclotrons in particle physics, specifically neutrino physics, and as drivers for muon production. Furthermore, as these same accelerators have important applications in the fields of isotope production and possibly in energy research, we have included those topics as well. Finally, we took a look at Fixed Field Alternating Gradient accelerators (FFAs) and their potential to become high-intensity machines.
	Slides MOBI01 [1.885 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOBI01
About •	Received ※ 23 July 2023 — Revised ※ 03 August 2023 — Accepted ※ 14 August 2023 — Issue date ※ 11 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOBO01	High Intensity Cyclotrons for Production of Medical Radioisotopes	cyclotron, injection, extraction, MMI	30
	E. van der Kraaij, J.-M. Geets, W.J.G.M. Kleeven, J. Mandrillon, N.A.R. Mine, V. Nuttens, P. Verbruggen IBA, Louvain-la-Neuve, Belgium
	At the previous cyclotron conference an overview of the cyclotrons for radioisotopes production was shown. Here, we will focus on the development of IBA’s accelerators in the recent three years. Notably the Cyclone® 70, the Cyclone® 30XP and the Cyclone® Kiube have made progress. The expertise gained with the development of these machines has led IBA to develop a completely new cyclotron for 30 MeV protons, the Cyclone® IKON. As its first construction is ongoing, details on the design of this accelerator will be presented.
	Slides MOBO01 [3.674 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOBO01
About •	Received ※ 04 December 2022 — Revised ※ 29 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 05 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPO014	Design Studies of the Cylindrically Symmetric Magnetic Inflector	injection, cyclotron, simulation, permanent-magnet	87
	L.G. Zhang, R.A. Baartman, Y. Bylinskii, T. Planche, Y.-N. Rao TRIUMF, Vancouver, Canada
	The spiral inflector steers the beam from the bore in the main magnet into the median plane to achieve the axial injection with an external ion source. In a conventional electrostatic infector, the injection beam energy is limited by the breakdown voltage on the electrodes. At the same time, the injection intensity is also limited by the small aperture in the electrostatic inflector. Magnetic inflector is a promising alternative to overcome these disadvantages. To demonstrate the technology, we use the TR100 main magnet model, a conceptual idea of an H²⁺ cyclotron, as a testbench to study the inflection conditions and optics of the passive magnetic inflector with a cylindrically symmetric structure. A mirror-like field with optimized mirror length and ratio provides a well-focused beam arriving at the median plane. The required magnetic field is produced by shimming a center plug in the injection hole. The space charge effect is also discussed with the simulation of a high-intensity injection beam.
	Poster MOPO014 [0.678 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO014
About •	Received ※ 04 December 2022 — Revised ※ 01 February 2023 — Accepted ※ 06 February 2023 — Issue date ※ 04 March 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUAO04	Design of a Multi-Harmonic Buncher for TRIUMF 500 MeV Cyclotron	injection, cyclotron, simulation, bunching	118
	S. Saminathan, R.A. Baartman, Y. Bylinskii, M. Ilagan, P.M. Jung, O. Law, R.E. Laxdal, M. Marchetto, T. Planche, V. Zvyagintsev TRIUMF, Vancouver, Canada
	The TRIUMF 500 MeV cyclotron injection system consists of a 40 m long beamline to transport the 300 keV H⁻ ion beams into the cyclotron. Part of the original beamline, the vertical injection section, was replaced in 2011 and, while the remaining horizontal injection section is being redesigned for replacement. As part of the horizontal injection beamline upgrade, the present buncher system will be replaced with a new one. Presently, the injection system consists of two double gap bunchers. The first buncher operates at the cyclotron RF frequency (23.06 MHz) while the second operates at the second harmonic frequency (46.12 MHz). The proposed new buncher is based on a two-electrode multi-harmonic system, which will be operated by up to three harmonics. The beam dynamics studies have been performed, including the space-charge effects using the particle-in-cell code WARP. Simulation results of longitudinal beam dynamics are presented for transporting beam intensity up to 1 mA.
	Slides TUAO04 [2.473 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUAO04
About •	Received ※ 03 January 2023 — Revised ※ 11 February 2023 — Accepted ※ 13 February 2023 — Issue date ※ 05 March 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAI01	Self-Consistent Simulation of an Internal Ion Source Plasma Meniscus and Its Extracted Space Charge Dominated Beam in the Cyclotron Central Region	cyclotron, extraction, ion-source, simulation	138
	G. D’Agostino INFN/LNS, Catania, Italy G. D’Agostino, W.J.G.M. Kleeven IBA, Louvain-la-Neuve, Belgium
	Funding: *Work supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 886190 Central region design simulations for cyclotrons with internal ion source are often complicated by the fact that the initial particle phase space distribution is not well known. Especially for high-intensity cyclotrons, one would like to have a quantitative self-consistent approach for a more accurate simulation of the beam extracted from the ion source and its acceleration in the first accelerating gaps under space charge conditions. This paper proposes some new ideas and methods for this problem. The simulation approach has been developed at IBA for the high-intensity compact self-extracting cyclotron in the EU-H2020-MSCA InnovaTron project. Detailed results of simulations on plasma meniscus and space charge dominated beam extracted from it and accelerated in the cyclotron centre are shown in the paper.
	Slides WEAI01 [3.099 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEAI01
About •	Received ※ 31 December 2022 — Revised ※ 09 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 03 June 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOBI01

Summary of the Snowmass’21 Workshop on High Power Cyclotrons and FFAs

cyclotron, proton, target, experiment

20

D. Winklehner, J.R. Alonso
MIT, Cambridge, Massachusetts, USA
A. Adelmann, M. Haj Tahar
PSI, Villigen PSI, Switzerland
L. Calabretta
INFN/LNS, Catania, Italy
H. Okuno
RIKEN Nishina Center, Wako, Japan
T. Planche
TRIUMF, Vancouver, Canada

In this talk, we summarize the presentations and findings of the "Workshop on High Power Cyclotrons and FFAs" that we held online in September 2021. The workshop was held as part of the 2021 Snowmass Community Exercise, in which the US particle physics community came together in a year-long effort to provide suggestions for a long-term strategy for the field, and the "Accelerators for Neutrinos" subpanel thereof. Topics that were discussed during our high-power cyclotron workshop were the application of cyclotrons in particle physics, specifically neutrino physics, and as drivers for muon production. Furthermore, as these same accelerators have important applications in the fields of isotope production and possibly in energy research, we have included those topics as well. Finally, we took a look at Fixed Field Alternating Gradient accelerators (FFAs) and their potential to become high-intensity machines.

Slides MOBI01 [1.885 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOBI01

About •

Received ※ 23 July 2023 — Revised ※ 03 August 2023 — Accepted ※ 14 August 2023 — Issue date ※ 11 October 2023

Cite •

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

MOBO01

High Intensity Cyclotrons for Production of Medical Radioisotopes

cyclotron, injection, extraction, MMI

30

E. van der Kraaij, J.-M. Geets, W.J.G.M. Kleeven, J. Mandrillon, N.A.R. Mine, V. Nuttens, P. Verbruggen
IBA, Louvain-la-Neuve, Belgium

At the previous cyclotron conference an overview of the cyclotrons for radioisotopes production was shown. Here, we will focus on the development of IBA’s accelerators in the recent three years. Notably the Cyclone® 70, the Cyclone® 30XP and the Cyclone® Kiube have made progress. The expertise gained with the development of these machines has led IBA to develop a completely new cyclotron for 30 MeV protons, the Cyclone® IKON. As its first construction is ongoing, details on the design of this accelerator will be presented.

Slides MOBO01 [3.674 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOBO01

About •

Received ※ 04 December 2022 — Revised ※ 29 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 05 July 2023

Cite •

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

MOPO014

Design Studies of the Cylindrically Symmetric Magnetic Inflector

injection, cyclotron, simulation, permanent-magnet

87

L.G. Zhang, R.A. Baartman, Y. Bylinskii, T. Planche, Y.-N. Rao
TRIUMF, Vancouver, Canada

The spiral inflector steers the beam from the bore in the main magnet into the median plane to achieve the axial injection with an external ion source. In a conventional electrostatic infector, the injection beam energy is limited by the breakdown voltage on the electrodes. At the same time, the injection intensity is also limited by the small aperture in the electrostatic inflector. Magnetic inflector is a promising alternative to overcome these disadvantages. To demonstrate the technology, we use the TR100 main magnet model, a conceptual idea of an H²⁺ cyclotron, as a testbench to study the inflection conditions and optics of the passive magnetic inflector with a cylindrically symmetric structure. A mirror-like field with optimized mirror length and ratio provides a well-focused beam arriving at the median plane. The required magnetic field is produced by shimming a center plug in the injection hole. The space charge effect is also discussed with the simulation of a high-intensity injection beam.

Poster MOPO014 [0.678 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO014

About •

Received ※ 04 December 2022 — Revised ※ 01 February 2023 — Accepted ※ 06 February 2023 — Issue date ※ 04 March 2023

Cite •

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

TUAO04

Design of a Multi-Harmonic Buncher for TRIUMF 500 MeV Cyclotron

injection, cyclotron, simulation, bunching

118

S. Saminathan, R.A. Baartman, Y. Bylinskii, M. Ilagan, P.M. Jung, O. Law, R.E. Laxdal, M. Marchetto, T. Planche, V. Zvyagintsev
TRIUMF, Vancouver, Canada

The TRIUMF 500 MeV cyclotron injection system consists of a 40 m long beamline to transport the 300 keV H⁻ ion beams into the cyclotron. Part of the original beamline, the vertical injection section, was replaced in 2011 and, while the remaining horizontal injection section is being redesigned for replacement. As part of the horizontal injection beamline upgrade, the present buncher system will be replaced with a new one. Presently, the injection system consists of two double gap bunchers. The first buncher operates at the cyclotron RF frequency (23.06 MHz) while the second operates at the second harmonic frequency (46.12 MHz). The proposed new buncher is based on a two-electrode multi-harmonic system, which will be operated by up to three harmonics. The beam dynamics studies have been performed, including the space-charge effects using the particle-in-cell code WARP. Simulation results of longitudinal beam dynamics are presented for transporting beam intensity up to 1 mA.

Slides TUAO04 [2.473 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUAO04

About •

Received ※ 03 January 2023 — Revised ※ 11 February 2023 — Accepted ※ 13 February 2023 — Issue date ※ 05 March 2023

Cite •

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

WEAI01

Self-Consistent Simulation of an Internal Ion Source Plasma Meniscus and Its Extracted Space Charge Dominated Beam in the Cyclotron Central Region

cyclotron, extraction, ion-source, simulation

138

G. D’Agostino
INFN/LNS, Catania, Italy
G. D’Agostino, W.J.G.M. Kleeven
IBA, Louvain-la-Neuve, Belgium

Funding: *Work supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 886190
Central region design simulations for cyclotrons with internal ion source are often complicated by the fact that the initial particle phase space distribution is not well known. Especially for high-intensity cyclotrons, one would like to have a quantitative self-consistent approach for a more accurate simulation of the beam extracted from the ion source and its acceleration in the first accelerating gaps under space charge conditions. This paper proposes some new ideas and methods for this problem. The simulation approach has been developed at IBA for the high-intensity compact self-extracting cyclotron in the EU-H2020-MSCA InnovaTron project. Detailed results of simulations on plasma meniscus and space charge dominated beam extracted from it and accelerated in the cyclotron centre are shown in the paper.

Slides WEAI01 [3.099 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEAI01

About •

Received ※ 31 December 2022 — Revised ※ 09 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 03 June 2023

Cite •

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