ECRIS2020 - Classification: 04: Radioactive Ion Beams and Charge Breeders

Paper	Title	Page
WEZZO01	Role of the 1+ Beam Optics Upstream the SPIRAL1 Charge Breeder	146
	L. Maunoury, S. Damoy, M. Dubois, R. Frigot, S. Hormigos, B. Jacquot, O. Kamalou GANIL, Caen, France
	The SPIRAL1 charge breeder (SP1CB) is under opera-tion. Radioactive ion beam (RIB) has already been deliv-ered [1] to Physicist for experiments. Charge breeding efficiencies demonstrated high performances for stable ion beams than RIB’s. The beam optics, prior to the injection of the 1+ ions into the SP1CB, is of prime im-portance [2] for obtaining such high efficiencies. Moreo-ver, the intensities of the RIB’s are so low, and indeed difficult to tune the SP1CB. A stable beam having a close B’ is required to find out the set of optic parameters preceding the tuning of the RIB. Hence, it has been de-cided to focus our effort on the control of 1+ beam optics leading to high charge breeding efficiencies whatever the 1+ mass, energy and Target Ion Source System (TISS) used. This contribution will show the strategy undertaken to overcome that problem and the results obtained. [1] L. Maunoury et al., Proceedings of the 23th Int. Workshop on ECR Ion Sources, Catania, Italy (2018) [2] A. Annaluru, PhD thesis, Université Caen Normandie (2019)
	Slides WEZZO01 [4.375 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO01
About •	Received ※ 29 September 2020 — Revised ※ 09 October 2020 — Accepted ※ 03 December 2020 — Issue date ※ 21 January 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZZO02	Contaminants Reduction in ECR Charge Breeders by LNL LPSC GANIL Collaboration	151
	J. Angot, M.A. Baylac, M. Migliore, P. Sole, T. Thuillier LPSC, Grenoble Cedex, France A. Galatà INFN/LNL, Legnaro (PD), Italy L. Maunoury GANIL, Caen, France
	Contaminants reduction in Electron Cyclotron Resonance Charge Breeders (ECRCB) is a key point for the future experiments foreseen at LNL and GANIL Isotope Separation On Line (ISOL) facilities. According to the mass separator resolution set downstream the ECRCB, the radioactive ion beam study can be challenged in case of low production rate. An ongoing collaboration between LNL, LPSC and GANIL laboratories aims to improve the beam purity, acting on all the pollutant causes. Comparative experiments will be done at LPSC using different techniques, like covering the plasma chamber wall with liners of different materials. Different configurations of the ECRCB will also be tested, with the enhancement of the efficiency and charge breeding time parameters as additional objectives. A presentation of this program is proposed together with the recent upgrade of the LPSC 1+N+ test bench, with the aim to improve the vacuum quality.
	Slides WEZZO02 [1.915 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO02
About •	Received ※ 29 September 2020 — Revised ※ 01 October 2020 — Accepted ※ 15 October 2020 — Issue date ※ 04 November 2020
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZZO03	ECR3 Commissioning and Planning for C-14 Ion Beams at the Argonne Tandem Linac Accelerator System	157
	R.H. Scott, R.C. Vondrasek ANL, Lemont, Illinois, USA
	Funding: U.S. Department of Energy, Office of Nuclear Physics, contract No. DE-AC02-06CH11357. The Electron Cyclotron Resonance Ion Source ECR3* has recently been commissioned at the Argonne Tandem Linac Accelerator System (ATLAS) at Argonne National Laboratory. While ECR3 can provide many of the stable ATLAS beams, its other intended purpose is the production of C-14 ion beams which were previously produced by a now-retired negative ion source. This paper will discuss the final installation and commissioning of the ion source as well as the preparations for running C-14. A stable C-13 ethylene gas was used as a surrogate to determine the expected level of N-14 contamination when running C-14 since they are inseparable at ATLAS. We were also able to confirm consumption rates and charge state efficiencies under different C-13 running conditions in order to optimize the upcoming C-14 beam production. *R. H. Scott, C. Dickerson, R. C. Pardo, and R. C. Vondrasek, "A New ECRIS Installation at the Argonne Tandem Linac Accelerator System", doi:10.18429/JACoW-ECRIS2016-WEPP14
	Slides WEZZO03 [0.667 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO03
About •	Received ※ 28 September 2020 — Revised ※ 30 September 2020 — Accepted ※ 03 December 2020 — Issue date ※ 19 April 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Role of the 1+ Beam Optics Upstream the SPIRAL1 Charge Breeder

146

L. Maunoury, S. Damoy, M. Dubois, R. Frigot, S. Hormigos, B. Jacquot, O. Kamalou
GANIL, Caen, France

The SPIRAL1 charge breeder (SP1CB) is under opera-tion. Radioactive ion beam (RIB) has already been deliv-ered [1] to Physicist for experiments. Charge breeding efficiencies demonstrated high performances for stable ion beams than RIB’s. The beam optics, prior to the injection of the 1+ ions into the SP1CB, is of prime im-portance [2] for obtaining such high efficiencies. Moreo-ver, the intensities of the RIB’s are so low, and indeed difficult to tune the SP1CB. A stable beam having a close B’ is required to find out the set of optic parameters preceding the tuning of the RIB. Hence, it has been de-cided to focus our effort on the control of 1+ beam optics leading to high charge breeding efficiencies whatever the 1+ mass, energy and Target Ion Source System (TISS) used. This contribution will show the strategy undertaken to overcome that problem and the results obtained.
[1] L. Maunoury et al., Proceedings of the 23th Int. Workshop on ECR Ion Sources, Catania, Italy (2018)
[2] A. Annaluru, PhD thesis, Université Caen Normandie (2019)

Slides WEZZO01 [4.375 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO01

About •

Received ※ 29 September 2020 — Revised ※ 09 October 2020 — Accepted ※ 03 December 2020 — Issue date ※ 21 January 2021

Cite •

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

WEZZO02

Contaminants Reduction in ECR Charge Breeders by LNL LPSC GANIL Collaboration

151

J. Angot, M.A. Baylac, M. Migliore, P. Sole, T. Thuillier
LPSC, Grenoble Cedex, France
A. Galatà
INFN/LNL, Legnaro (PD), Italy
L. Maunoury
GANIL, Caen, France

Contaminants reduction in Electron Cyclotron Resonance Charge Breeders (ECRCB) is a key point for the future experiments foreseen at LNL and GANIL Isotope Separation On Line (ISOL) facilities. According to the mass separator resolution set downstream the ECRCB, the radioactive ion beam study can be challenged in case of low production rate. An ongoing collaboration between LNL, LPSC and GANIL laboratories aims to improve the beam purity, acting on all the pollutant causes. Comparative experiments will be done at LPSC using different techniques, like covering the plasma chamber wall with liners of different materials. Different configurations of the ECRCB will also be tested, with the enhancement of the efficiency and charge breeding time parameters as additional objectives. A presentation of this program is proposed together with the recent upgrade of the LPSC 1+N+ test bench, with the aim to improve the vacuum quality.

Slides WEZZO02 [1.915 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO02

About •

Received ※ 29 September 2020 — Revised ※ 01 October 2020 — Accepted ※ 15 October 2020 — Issue date ※ 04 November 2020

Cite •

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

WEZZO03

ECR3 Commissioning and Planning for C-14 Ion Beams at the Argonne Tandem Linac Accelerator System

157

R.H. Scott, R.C. Vondrasek
ANL, Lemont, Illinois, USA

Funding: U.S. Department of Energy, Office of Nuclear Physics, contract No. DE-AC02-06CH11357.
The Electron Cyclotron Resonance Ion Source ECR3* has recently been commissioned at the Argonne Tandem Linac Accelerator System (ATLAS) at Argonne National Laboratory. While ECR3 can provide many of the stable ATLAS beams, its other intended purpose is the production of C-14 ion beams which were previously produced by a now-retired negative ion source. This paper will discuss the final installation and commissioning of the ion source as well as the preparations for running C-14. A stable C-13 ethylene gas was used as a surrogate to determine the expected level of N-14 contamination when running C-14 since they are inseparable at ATLAS. We were also able to confirm consumption rates and charge state efficiencies under different C-13 running conditions in order to optimize the upcoming C-14 beam production.
*R. H. Scott, C. Dickerson, R. C. Pardo, and R. C. Vondrasek, "A New ECRIS Installation at the Argonne Tandem Linac Accelerator System", doi:10.18429/JACoW-ECRIS2016-WEPP14

Slides WEZZO03 [0.667 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO03

About •

Received ※ 28 September 2020 — Revised ※ 30 September 2020 — Accepted ※ 03 December 2020 — Issue date ※ 19 April 2021

Cite •

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