ECRIS2018 - List of Authors (Lamy, T.)

Paper	Title	Page
MOC1	Challenges and Prospects of Electron Cyclotron Resonance Charge Breeding	14
	T. Thuillier, J. Angot, M.A. Baylac, S.B.B. Bhaskar, J.B. Cully, J. Jacob, T. Lamy, A. Leduc, P. Sole LPSC, Grenoble Cedex, France
	Electron cyclotron resonance charge breeder (ECR CB) is one of the instruments used to boost the radioactive ion beam (RIB) charge state in isotope separator on-line (ISOL) facilities. While the ECR CB can manage intense 1+ RIB without difficulty, the present CB generation co extracts significant amounts of impurities which can be detrimental to the study of very low intensity N+ RIB in today facilities if no downstream high mass resolution separation is available. This work investigates the im-provements achievable with a new generation 18 GHz ECR CB applicable to future facility like EURISOL. The study shows that with a modified ion source geometry, an optimized magnetic confinement, a careful wall metal choice like beryllium, a UHV vacuum technology, the charge breeder performance will improve as follows: 20 % higher capture efficiency, -40% charge breeding time, charge state ion production with mass over charge of 3 up to xenon and over 6 up to uranium, co-extracted contam-inant density reduction by a factor 60 to 600. An 18 GHz ECR CB ion source layout is finally proposed for EURISOL.
	Slides MOC1 [2.061 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC1
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOC3	Charge Breeding Time Studies With Short Pulse Beam Injection	24
	J. Angot, M.A. Baylac, J. Jacob, T. Lamy, N. Preveraud, P. Sole, T. Thuillier LPSC, Grenoble Cedex, France O.A. Tarvainen JYFL, Jyväskylä, Finland
	Investigations on the Charge Breeding (CB) time have been done with the PHOENIX ECR Charge Breeder. The traditional measurement method consists in generating a 1+ ion beam rise front and measuring the time to reach 90% of the final steady N+ ion beam intensity. In order to study the possible self-consistent effects of the accumulation of injected ions in the plasma and to better understand the 1+N+ process, short 1+ pulses were injected and the time resolved N+ beam responses were measured. Several experimental campaigns were performed with different elements and configurations. The effect of several parameters was studied like the amplitude and the width of the pulse. The measurements were also used to estimate the 1+N+ efficiencies in the case of radioactive species. The new short pulse CB time method and the experimental results will be presented.
	Slides MOC3 [1.799 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC3
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Challenges and Prospects of Electron Cyclotron Resonance Charge Breeding

14

T. Thuillier, J. Angot, M.A. Baylac, S.B.B. Bhaskar, J.B. Cully, J. Jacob, T. Lamy, A. Leduc, P. Sole
LPSC, Grenoble Cedex, France

Electron cyclotron resonance charge breeder (ECR CB) is one of the instruments used to boost the radioactive ion beam (RIB) charge state in isotope separator on-line (ISOL) facilities. While the ECR CB can manage intense 1+ RIB without difficulty, the present CB generation co extracts significant amounts of impurities which can be detrimental to the study of very low intensity N+ RIB in today facilities if no downstream high mass resolution separation is available. This work investigates the im-provements achievable with a new generation 18 GHz ECR CB applicable to future facility like EURISOL. The study shows that with a modified ion source geometry, an optimized magnetic confinement, a careful wall metal choice like beryllium, a UHV vacuum technology, the charge breeder performance will improve as follows: 20 % higher capture efficiency, -40% charge breeding time, charge state ion production with mass over charge of 3 up to xenon and over 6 up to uranium, co-extracted contam-inant density reduction by a factor 60 to 600. An 18 GHz ECR CB ion source layout is finally proposed for EURISOL.

Slides MOC1 [2.061 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC1

Export •

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

MOC3

Charge Breeding Time Studies With Short Pulse Beam Injection

24

J. Angot, M.A. Baylac, J. Jacob, T. Lamy, N. Preveraud, P. Sole, T. Thuillier
LPSC, Grenoble Cedex, France
O.A. Tarvainen
JYFL, Jyväskylä, Finland

Investigations on the Charge Breeding (CB) time have been done with the PHOENIX ECR Charge Breeder. The traditional measurement method consists in generating a 1+ ion beam rise front and measuring the time to reach 90% of the final steady N+ ion beam intensity. In order to study the possible self-consistent effects of the accumulation of injected ions in the plasma and to better understand the 1+N+ process, short 1+ pulses were injected and the time resolved N+ beam responses were measured. Several experimental campaigns were performed with different elements and configurations. The effect of several parameters was studied like the amplitude and the width of the pulse. The measurements were also used to estimate the 1+N+ efficiencies in the case of radioactive species. The new short pulse CB time method and the experimental results will be presented.

Slides MOC3 [1.799 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC3

Export •

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