ECRIS2024 - List of Keywords (solenoid)

Paper	Title	Other Keywords	Page
MOP07	Use of a 2.45 GHz ECR ion source for the neutron target demonstrator project	ion-source, extraction, plasma, neutron	42
	S.V. Melanson, A.M. George, M.P. Dehnel, S. Sumar D-Pace, Nelson, British Columbia, Canada
	D-Pace has licensed a 2.45 GHz ECR ion source from Neutron Therapeutics. The ion source will be used for the Neutron Target Demonstrator project at Los Alamos National Laboratory where 10 mA of singly charge krypton ions at 50 keV are required with a normalized 4-RMS emittance of less than 1 mm·mrad. The goal of the project is to create a reverse kinematics neutron capture reaction with ⁸⁴Kr ions. Due to the high radiation environment that the ion source will be subjected to, a solid state microwave power supply will be used instead of the traditional magnetron for the experiment. The main advantage of the solid state power supply is that the output is transmitted by a coax cable instead of a waveguide, so the power supply can be located a long distance away from the ion source without the need for a complicated and expensive waveguide. The other advantage of the solid state device is that the frequency can be varied from 2.4 GHz to 2.5 GHz. This gives the operator an extra degree of freedom for tuning the ion source and also allows for the use of permanent magnets instead of solenoids while still having the ability to tune the ECR condition. We present how the frequency variation affects the beam parameters with both the solenoid and the permanent magnet versions of the ion source.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP07
About •	Received ※ 14 September 2024 — Revised ※ 17 June 2025 — Accepted ※ 29 June 2025 — Issued ※ 30 June 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP11	Continuous data-driven control of the GTS-LHC ion source at CERN	injection, controls, linac, plasma	56
	V. Kain, B. Rodriguez Mateos, N. Bruchon, D. Küchler CERN, Geneva, Switzerland S. Hirlaender University of Salzburg, Salzburg, Austria
	Recent advances with the CERN infrastructure for machine learning allows to deploy state-of-the-art data-driven control algorithms for stabilising and optimising particle accelerator systems. This contribution summarises the results of the first tests with different continuous control algorithms to optimise the intensity out of the CERN LINAC3 source. The task is particularly challenging due to the different latencies for control parameters that range from instantaneous response, to full response after only ~30 minutes. The next steps and a vision towards full deployment and autonomous source control will also be discussed.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP11
About •	Received ※ 14 September 2024 — Revised ※ 17 September 2024 — Accepted ※ 29 January 2025 — Issued ※ 18 May 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUA2	ECR2 performance upgrades at ATLAS	ECR, plasma, ion-source, extraction	72
	J.T. McLain, R.C. Vondrasek, R.H. Scott ANL, Lemont, Illinois, USA
	Funding: This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. The user requests for higher beam energies and intensities have driven the decision to upgrade the ECR2 ion source at the Argonne Tandem Linac Accelerator System. Multiple upgrades are in progress with the expected outcome of dramatically increased ECR2 beam intensities and charge state capabilities. The magnetic upgrades include integrating an improved hexapole permanent magnet array [1] that provides the ion source radial fields, reworking the magnetic materials surrounding the plasma chamber, and installing a new cooling system for the electromagnetic solenoids that govern the ion source axial fields. The new hexapole and higher solenoid magnet operating currents will increase the ion source magnetic fields and support the use of 18 GHz RF heating, further increasing the ECR2 beam capabilities. Following these improvements and subsequent source performance, simulations of beam transport devices on the ion source platform will need to be revisited for transmission of high intensity beams. Details of these upgrade projects and simulations of the ion optics are presented. [1] R. Vondrasek, J. McLain, and R. Scott, J. Phys.: Conf. Ser., vol. 2743, p. 012044. 2024.
	Slides TUA2 [2.658 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-TUA2
About •	Received ※ 13 September 2024 — Revised ※ 25 November 2024 — Accepted ※ 29 January 2025 — Issued ※ 05 June 2025
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOP07

Use of a 2.45 GHz ECR ion source for the neutron target demonstrator project

ion-source, extraction, plasma, neutron

42

S.V. Melanson, A.M. George, M.P. Dehnel, S. Sumar
D-Pace, Nelson, British Columbia, Canada

D-Pace has licensed a 2.45 GHz ECR ion source from Neutron Therapeutics. The ion source will be used for the Neutron Target Demonstrator project at Los Alamos National Laboratory where 10 mA of singly charge krypton ions at 50 keV are required with a normalized 4-RMS emittance of less than 1 mm·mrad. The goal of the project is to create a reverse kinematics neutron capture reaction with ⁸⁴Kr ions. Due to the high radiation environment that the ion source will be subjected to, a solid state microwave power supply will be used instead of the traditional magnetron for the experiment. The main advantage of the solid state power supply is that the output is transmitted by a coax cable instead of a waveguide, so the power supply can be located a long distance away from the ion source without the need for a complicated and expensive waveguide. The other advantage of the solid state device is that the frequency can be varied from 2.4 GHz to 2.5 GHz. This gives the operator an extra degree of freedom for tuning the ion source and also allows for the use of permanent magnets instead of solenoids while still having the ability to tune the ECR condition. We present how the frequency variation affects the beam parameters with both the solenoid and the permanent magnet versions of the ion source.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP07

About •

Received ※ 14 September 2024 — Revised ※ 17 June 2025 — Accepted ※ 29 June 2025 — Issued ※ 30 June 2025

Cite •

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

MOP11

Continuous data-driven control of the GTS-LHC ion source at CERN

injection, controls, linac, plasma

56

V. Kain, B. Rodriguez Mateos, N. Bruchon, D. Küchler
CERN, Geneva, Switzerland
S. Hirlaender
University of Salzburg, Salzburg, Austria

Recent advances with the CERN infrastructure for machine learning allows to deploy state-of-the-art data-driven control algorithms for stabilising and optimising particle accelerator systems. This contribution summarises the results of the first tests with different continuous control algorithms to optimise the intensity out of the CERN LINAC3 source. The task is particularly challenging due to the different latencies for control parameters that range from instantaneous response, to full response after only ~30 minutes. The next steps and a vision towards full deployment and autonomous source control will also be discussed.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-MOP11

About •

Received ※ 14 September 2024 — Revised ※ 17 September 2024 — Accepted ※ 29 January 2025 — Issued ※ 18 May 2025

Cite •

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

TUA2

ECR2 performance upgrades at ATLAS

ECR, plasma, ion-source, extraction

72

J.T. McLain, R.C. Vondrasek, R.H. Scott
ANL, Lemont, Illinois, USA

Funding: This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357.
The user requests for higher beam energies and intensities have driven the decision to upgrade the ECR2 ion source at the Argonne Tandem Linac Accelerator System. Multiple upgrades are in progress with the expected outcome of dramatically increased ECR2 beam intensities and charge state capabilities. The magnetic upgrades include integrating an improved hexapole permanent magnet array [1] that provides the ion source radial fields, reworking the magnetic materials surrounding the plasma chamber, and installing a new cooling system for the electromagnetic solenoids that govern the ion source axial fields. The new hexapole and higher solenoid magnet operating currents will increase the ion source magnetic fields and support the use of 18 GHz RF heating, further increasing the ECR2 beam capabilities. Following these improvements and subsequent source performance, simulations of beam transport devices on the ion source platform will need to be revisited for transmission of high intensity beams. Details of these upgrade projects and simulations of the ion optics are presented.
[1] R. Vondrasek, J. McLain, and R. Scott, J. Phys.: Conf. Ser., vol. 2743, p. 012044. 2024.

Slides TUA2 [2.658 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ECRIS2024-TUA2

About •

Received ※ 13 September 2024 — Revised ※ 25 November 2024 — Accepted ※ 29 January 2025 — Issued ※ 05 June 2025

Cite •

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