ECRIS2024 - List of Authors (Dubois, M.)

Paper	Title	Page
MOB1	GANIL ion sources: optimisation for operation	5
	M. Dubois, B. Osmond, F. Lemagnen, L. Gouleuf, V. Metayer GANIL, Caen, France
	The GANIL (Grand Accélérateur National d’Ions Lourds) in Caen has been producing and accelerating stable and radioactive ion beams for nuclear physics, atomic physics, radiobiology and materials irradiation since 1982. On cyclotrons facility, two ion sources (ECR4 and ECR4M) are used to produce around 4,000 hours per year of gaseous and metallic beams. Recently, studies have been carried out to find ways of optimizing beam characteristics (stability, intensities). One of these involves improving the long-term stability of the beam, which is an important parameter for tuning the accelerator and for physics experiments. At the same time, this improved stability will also reduce the need of on-call interventions for ion source experts. Other studies and tests have been carried out to increase the intensity and/or stability of the metal beams by adapting the injection of the ion source on ECR4/4M. Depending on the configuration, the gain shall be up to a factor of 2 on the charge state required for acceleration, and stability has also been improved compared to previous one. Some details and results will be presented.
	Slides MOB1 [6.158 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOB1
About •	Received ※ 04 November 2024 — Revised ※ 22 November 2024 — Accepted ※ 20 January 2025 — Issued ※ 23 January 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP13	Production of “cocktail beams” with ECR booster, post-accelerated for industrial applications	60
	R. Frigot, M. Dubois, B. Jacquot, M. Lalande, B. Lucarz, C.B. Michel, E. Dessay, A. Dubois GANIL, Caen, France
	The GANIL (Grand Accélérateur National d’Ions Lourds) in Caen produces up to 20 % of the beam times dedicated to industrial applications, such as the irradiation of electronic components. The SAGA (Space Application at GAnil) project aims to increase beam times for these applications in the future in order to meet demand from French and European industries. In this context, one of the challenges is to be able to switch rapidly from one beam to another in order to optimize the beam time available to industry. To meet these requirements, CIME’s cyclotron could be an interesting device: it is capable of accelerating beams up to 20 MeV/A for light elements, and it can be used as a mass separator to select the desired beam. In order to supply stable ion beams to the CIME cyclotron, the charge breeder installed on the SPIRAL1 facility has been tested and adapted to provide a stable cocktail-type beam with a very close A/Q. Details of the project and initial results will be described.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP13
About •	Received ※ 03 December 2024 — Revised ※ 20 January 2025 — Accepted ※ 03 May 2025 — Issued ※ 19 June 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUB2	Simulation of surface X-ray emission from the ASTERICS ECR ion source	81
	T. Thuillier, A. Cernuschi, B. Cheymol, M. Kasulja, E. Lagorio, C. Peaucelle, F. Vezzu LPSC, Grenoble Cedex, France M. Dubois, F. Lemagnen GANIL, Caen, France T. Cadoux, H. Felice, D. Simon CEA-IRFU, Gif-sur-Yvette, France
	A new electron cyclotron resonance ion source (ECRIS) named ASTERICS is under development for the NEWGAIN project, aiming at building a new injector for the SPIRAL2 accelerator at GANIL. A Monte Carlo code dedicated to the electron dynamics in ECRIS is used to investigate the local energy, position and velocity distribution of electrons impinging on the plasma chamber wall of ASTERICS. These quantities are presented for both the injection and extraction planes and the radial chamber wall. Results show that the electron energy distribution function is different on each of these three surfaces and that the electron velocity direction to the walls is deeply anisotropic. This data is next used as an input in a Fluka 3-dimensional model including the ASTERICS ECRIS mechanics, a simplified low energy beam line and the experimental cave in which the ion source will be installed. The x-ray flux characteristics around the source are presented. The shielding thickness and its location are studied to grant the safe passage of personnel around the ECRIS location in the accelerator building.
	Slides TUB2 [7.367 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-TUB2
About •	Received ※ 30 October 2024 — Revised ※ 31 October 2024 — Accepted ※ 29 January 2025 — Issued ※ 25 February 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

GANIL ion sources: optimisation for operation

5

M. Dubois, B. Osmond, F. Lemagnen, L. Gouleuf, V. Metayer
GANIL, Caen, France

The GANIL (Grand Accélérateur National d’Ions Lourds) in Caen has been producing and accelerating stable and radioactive ion beams for nuclear physics, atomic physics, radiobiology and materials irradiation since 1982. On cyclotrons facility, two ion sources (ECR4 and ECR4M) are used to produce around 4,000 hours per year of gaseous and metallic beams. Recently, studies have been carried out to find ways of optimizing beam characteristics (stability, intensities). One of these involves improving the long-term stability of the beam, which is an important parameter for tuning the accelerator and for physics experiments. At the same time, this improved stability will also reduce the need of on-call interventions for ion source experts. Other studies and tests have been carried out to increase the intensity and/or stability of the metal beams by adapting the injection of the ion source on ECR4/4M. Depending on the configuration, the gain shall be up to a factor of 2 on the charge state required for acceleration, and stability has also been improved compared to previous one. Some details and results will be presented.

Slides MOB1 [6.158 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOB1

About •

Received ※ 04 November 2024 — Revised ※ 22 November 2024 — Accepted ※ 20 January 2025 — Issued ※ 23 January 2025

Cite •

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

MOP13

Production of “cocktail beams” with ECR booster, post-accelerated for industrial applications

60

R. Frigot, M. Dubois, B. Jacquot, M. Lalande, B. Lucarz, C.B. Michel, E. Dessay, A. Dubois
GANIL, Caen, France

The GANIL (Grand Accélérateur National d’Ions Lourds) in Caen produces up to 20 % of the beam times dedicated to industrial applications, such as the irradiation of electronic components. The SAGA (Space Application at GAnil) project aims to increase beam times for these applications in the future in order to meet demand from French and European industries. In this context, one of the challenges is to be able to switch rapidly from one beam to another in order to optimize the beam time available to industry. To meet these requirements, CIME’s cyclotron could be an interesting device: it is capable of accelerating beams up to 20 MeV/A for light elements, and it can be used as a mass separator to select the desired beam. In order to supply stable ion beams to the CIME cyclotron, the charge breeder installed on the SPIRAL1 facility has been tested and adapted to provide a stable cocktail-type beam with a very close A/Q. Details of the project and initial results will be described.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP13

About •

Received ※ 03 December 2024 — Revised ※ 20 January 2025 — Accepted ※ 03 May 2025 — Issued ※ 19 June 2025

Cite •

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

TUB2

Simulation of surface X-ray emission from the ASTERICS ECR ion source

81

T. Thuillier, A. Cernuschi, B. Cheymol, M. Kasulja, E. Lagorio, C. Peaucelle, F. Vezzu
LPSC, Grenoble Cedex, France
M. Dubois, F. Lemagnen
GANIL, Caen, France
T. Cadoux, H. Felice, D. Simon
CEA-IRFU, Gif-sur-Yvette, France

A new electron cyclotron resonance ion source (ECRIS) named ASTERICS is under development for the NEWGAIN project, aiming at building a new injector for the SPIRAL2 accelerator at GANIL. A Monte Carlo code dedicated to the electron dynamics in ECRIS is used to investigate the local energy, position and velocity distribution of electrons impinging on the plasma chamber wall of ASTERICS. These quantities are presented for both the injection and extraction planes and the radial chamber wall. Results show that the electron energy distribution function is different on each of these three surfaces and that the electron velocity direction to the walls is deeply anisotropic. This data is next used as an input in a Fluka 3-dimensional model including the ASTERICS ECRIS mechanics, a simplified low energy beam line and the experimental cave in which the ion source will be installed. The x-ray flux characteristics around the source are presented. The shielding thickness and its location are studied to grant the safe passage of personnel around the ECRIS location in the accelerator building.

Slides TUB2 [7.367 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-TUB2

About •

Received ※ 30 October 2024 — Revised ※ 31 October 2024 — Accepted ※ 29 January 2025 — Issued ※ 25 February 2025

Cite •

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