ECRIS2020 - List of Keywords (target)

Paper	Title	Other Keywords	Page
TUZZO05	Multi-Species Child-Langmuir Law with Application to ECR Ion Sources	ECR, extraction, space-charge, ion-source	106
	C.Y. Wong ORNL, Oak Ridge, Tennessee, USA S.M. Lund FRIB, East Lansing, Michigan, USA
	We generalize the classical single-species Child-Langmuir Law to analyze multi-species beams from ECR ion sources. The formulation assumes the relative weight of each species in the extracted beam is known. We apply the results to charge state distribution data from Artemis- and Venus-type sources at the NSCL and LBNL respectively. The total measured beam current is close to the maximum current predicted by the multi-species Child Langmuir law in each case, which indicates that beam extraction occurs close to space-charge-limited flow conditions. Prospects for application of the results and further studies on the topic are outlined.
	Slides TUZZO05 [0.508 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-TUZZO05
About •	Received ※ 28 September 2020 — Revised ※ 28 December 2020 — Accepted ※ 16 January 2021 — Issue date ※ 18 May 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEXZO02	³⁹Ar Enrichment System Based on a 2.45 GHz ECR Ion Source	ion-source, ECR, experiment, vacuum	128
	Z.H. Jia, X. Fang, Y.H. Guo, Q. Hu, Y.J. Li, Y.G. Liu, L.T. Sun, Q. Wu, Y. Yang, T.X. Zhan, J.Q. Zhang IMP/CAS, Lanzhou, People’s Republic of China W. Jiang HNLPSM, Hefei, People’s Republic of China Z.T. Lu USTC, SNST, Anhui, People’s Republic of China
	Funding: National Key Research and Development Project (contract No.2016YFA0302202). Aimed at improving the ATTA’s (Atom Trap Trace Analysis) dating efficiency with ³⁹Ar radioactive isotope, an isotope enrichment system has been developed at IMP (Institute of Modern Physics) to increase the abundance of ³⁹Ar in the incident sample gas. In this enrichment system, a 2.45 GHz ECR ion source was designed to ionize sample gas and produce isotopes beams with several mA, and the isotopes beam is transported and separated in the separation beam line, which is consisted of two quadrupoles and an analysis magnet. The separated isotopes are collected by a rotated aluminum foil target. According to the recent cross-checked results with ATTA, high enrichment factor of ³⁹Ar isotope has been successfully reached. This paper will give a general introduction to the platform setup. The isotope enrichment efficiency is the critical issue for such a platform and will be specially discussed.
	Slides WEXZO02 [1.799 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEXZO02
About •	Received ※ 29 September 2020 — Revised ※ 21 December 2020 — Accepted ※ 14 February 2021 — Issue date ※ 21 July 2021
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	ECR, ion-source, experiment, ECRIS	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

Other Keywords

Page

TUZZO05

Multi-Species Child-Langmuir Law with Application to ECR Ion Sources

ECR, extraction, space-charge, ion-source

106

C.Y. Wong
ORNL, Oak Ridge, Tennessee, USA
S.M. Lund
FRIB, East Lansing, Michigan, USA

We generalize the classical single-species Child-Langmuir Law to analyze multi-species beams from ECR ion sources. The formulation assumes the relative weight of each species in the extracted beam is known. We apply the results to charge state distribution data from Artemis- and Venus-type sources at the NSCL and LBNL respectively. The total measured beam current is close to the maximum current predicted by the multi-species Child Langmuir law in each case, which indicates that beam extraction occurs close to space-charge-limited flow conditions. Prospects for application of the results and further studies on the topic are outlined.

Slides TUZZO05 [0.508 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-TUZZO05

About •

Received ※ 28 September 2020 — Revised ※ 28 December 2020 — Accepted ※ 16 January 2021 — Issue date ※ 18 May 2021

Cite •

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

WEXZO02

³⁹Ar Enrichment System Based on a 2.45 GHz ECR Ion Source

ion-source, ECR, experiment, vacuum

128

Z.H. Jia, X. Fang, Y.H. Guo, Q. Hu, Y.J. Li, Y.G. Liu, L.T. Sun, Q. Wu, Y. Yang, T.X. Zhan, J.Q. Zhang
IMP/CAS, Lanzhou, People’s Republic of China
W. Jiang
HNLPSM, Hefei, People’s Republic of China
Z.T. Lu
USTC, SNST, Anhui, People’s Republic of China

Funding: National Key Research and Development Project (contract No.2016YFA0302202).
Aimed at improving the ATTA’s (Atom Trap Trace Analysis) dating efficiency with ³⁹Ar radioactive isotope, an isotope enrichment system has been developed at IMP (Institute of Modern Physics) to increase the abundance of ³⁹Ar in the incident sample gas. In this enrichment system, a 2.45 GHz ECR ion source was designed to ionize sample gas and produce isotopes beams with several mA, and the isotopes beam is transported and separated in the separation beam line, which is consisted of two quadrupoles and an analysis magnet. The separated isotopes are collected by a rotated aluminum foil target. According to the recent cross-checked results with ATTA, high enrichment factor of ³⁹Ar isotope has been successfully reached. This paper will give a general introduction to the platform setup. The isotope enrichment efficiency is the critical issue for such a platform and will be specially discussed.

Slides WEXZO02 [1.799 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEXZO02

About •

Received ※ 29 September 2020 — Revised ※ 21 December 2020 — Accepted ※ 14 February 2021 — Issue date ※ 21 July 2021

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

ECR, ion-source, experiment, ECRIS

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)