ECRIS2016 - List of Keywords (high-voltage)

Paper	Title	Other Keywords	Page
WECO02	Development of a Compact High Intensity Ion Source for Light Ions at CEA-Saclay	ion, extraction, plasma, light-ion	73
	O. Delferrière, Y. Gauthier, R. Gobin, O. Tuske CEA/IRFU, Gif-sur-Yvette, France F. Harrault CEA/DRF/IRFU, Gif-sur-Yvette, France
	During the past 5 years, a R&D program has been launched to improve the beam quality of ECR 2.45 GHz high intensity light ion sources for high power accelerators. The main goal was to minimize the divergence and emittance growth of intense beams due to the space charge as early as possible on the low energy transfer line for a better injection in the second stage of acceleration (RFQ). This has been achieved by reducing the length of the extraction system, to be able to put the first solenoid as close as possible to the extraction aperture. This was performed with the ALISES concept (Advanced Light Ion Source Extraction System). Encouraging results have been obtained in 2012 but with limitations due to Penning discharges in the accelerating column. Taking advantages of ALISES geometry, intensive studies and simulations have been undertaken to eliminate the discharge phenomena. An Innovative and compact source geometry has been found and the source has been fabricated. This new prototype and its performances will be described, as well as magnetic field configuration studies and its influence on the extracted beam. This source developed at Saclay is under patent number FR 15 56871 and this patent is pending
	Slides WECO02 [35.894 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WECO02
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WEPP40	Fast Sputtering Measurement Studies using Uranium with the NSCL ECR Ion Sources	ion, plasma, ECR, injection	129
	D.E. Neben, J. Fogleman, A.N. Pham, S. Renteria, L. Tobos NSCL, East Lansing, Michigan, USA D. Leitner LBNL, Berkeley, California, USA G. Machicoane FRIB, East Lansing, Michigan, USA G. Parsey MSU, East Lansing, Michigan, USA J.P. Verboncoeur Michigan State University, East Lansing, Michigan, USA
	Funding: Michigan State University and the National Science Foundation: NSF Award Number PHY-1415462 Existing heavy ion facilities such as the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University rely on Electron Cyclotron Resonance (ECR) ion sources as injectors of highly charged ion beams. Long ion confinement times are necessary to produce dense populations of highly charged ions because of steadily decreasing ionization cross sections with increasing charge state. To further understand ion extraction and confinement we are using a fast sputtering technique first developed at Argonne National Laboratory [1] to introduce a small amount of uranium metal into the plasma at a well-defined time. In addition we utilize an axial x-ray apparatus [2] to characterize the hot electron plasma population via its bremsstrahlung emission. R. Vondrasek, et. Al., Rev. Sci. Instrum. 73, 548 (2002) *T. Ropponen, et. Al., Proceedings of ECRIS2010, Grenoble France (2010)
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP40
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WECO02

Development of a Compact High Intensity Ion Source for Light Ions at CEA-Saclay

ion, extraction, plasma, light-ion

73

O. Delferrière, Y. Gauthier, R. Gobin, O. Tuske
CEA/IRFU, Gif-sur-Yvette, France
F. Harrault
CEA/DRF/IRFU, Gif-sur-Yvette, France

During the past 5 years, a R&D program has been launched to improve the beam quality of ECR 2.45 GHz high intensity light ion sources for high power accelerators. The main goal was to minimize the divergence and emittance growth of intense beams due to the space charge as early as possible on the low energy transfer line for a better injection in the second stage of acceleration (RFQ). This has been achieved by reducing the length of the extraction system, to be able to put the first solenoid as close as possible to the extraction aperture. This was performed with the ALISES concept (Advanced Light Ion Source Extraction System). Encouraging results have been obtained in 2012 but with limitations due to Penning discharges in the accelerating column. Taking advantages of ALISES geometry, intensive studies and simulations have been undertaken to eliminate the discharge phenomena. An Innovative and compact source geometry has been found and the source has been fabricated. This new prototype and its performances will be described, as well as magnetic field configuration studies and its influence on the extracted beam.
This source developed at Saclay is under patent number FR 15 56871 and this patent is pending

Slides WECO02 [35.894 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WECO02

Export •

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

WEPP40

Fast Sputtering Measurement Studies using Uranium with the NSCL ECR Ion Sources

ion, plasma, ECR, injection

129

D.E. Neben, J. Fogleman, A.N. Pham, S. Renteria, L. Tobos
NSCL, East Lansing, Michigan, USA
D. Leitner
LBNL, Berkeley, California, USA
G. Machicoane
FRIB, East Lansing, Michigan, USA
G. Parsey
MSU, East Lansing, Michigan, USA
J.P. Verboncoeur
Michigan State University, East Lansing, Michigan, USA

Funding: Michigan State University and the National Science Foundation: NSF Award Number PHY-1415462
Existing heavy ion facilities such as the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University rely on Electron Cyclotron Resonance (ECR) ion sources as injectors of highly charged ion beams. Long ion confinement times are necessary to produce dense populations of highly charged ions because of steadily decreasing ionization cross sections with increasing charge state. To further understand ion extraction and confinement we are using a fast sputtering technique first developed at Argonne National Laboratory [1] to introduce a small amount of uranium metal into the plasma at a well-defined time. In addition we utilize an axial x-ray apparatus [2] to characterize the hot electron plasma population via its bremsstrahlung emission.
*R. Vondrasek, et. Al., Rev. Sci. Instrum. 73, 548 (2002)
**T. Ropponen, et. Al., Proceedings of ECRIS2010, Grenoble France (2010)

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP40

Export •

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