ECRIS2018 - List of Authors (Angot, J.)

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)

MOC4	SPIRAL1: A Versatile User Facility	29
	L. Maunoury, A.T. Annaluru, O. Bajeat, P. Delahaye, M. Dubois, R. Frigot, S. Hormigos, P. Jardin, O. Kamalou, P. Lecomte, O. Osmond, G. Peschard, B. Retailleau, A. Savalle, J.C. Thomas, V. Toivanen, P. Ujic GANIL, Caen, France J. Angot LPSC, Grenoble Cedex, France E.K. Traykov IPHC, Strasbourg Cedex 2, France
	SPIRAL1 Upgrade hardware is now almost completed. The FEBIAD 1+ source has been tested for the production of new radioactive isotopes, PHOENIX Charge Breeder (CB) is in place reproducing nearly the charge breeding efficiencies measured at LPSC lab and the infrastructure is operational to welcome such new multifaceted devices. The commissioning phase started in the second semester of 2017. It has consisted of a stepwise process to test the upgrade of the SPIRAL1 facility from simple validation (operation of CB as a stand-alone source) up to the production of the first 1+/n+ Radioactive Ion Beam (RIB) with the 37K9+. This contribution will summarize the different steps completed successfully and especially the measurements done to validate each of the commissioning stages. These include e.g. ionization efficiencies for CB; beam line optics for 1+/n+ and charge breeding efficiencies. The remaining effort required to ensure the reliability of the complete system for routine RIB operation is also presented. A section will be dedicated to a new feature of SPIRAL1 facility: combination of CB and CIME leads to deliver stable beams with energies never done until now.
	Slides MOC4 [2.712 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC4
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP09	Operation of the PHOENIX V3 ECRIS Applying Double Frequency Heating	94
	F. Maimone, R. Lang, J. Mäder, P.T. Patchakui, K. Tinschert, D. van Rooyen GSI, Darmstadt, Germany J. Angot, L. Bonny, J. Jacob, A. Leduc, P. Sole, T. Thuillier LPSC, Grenoble Cedex, France
	PHOENIX V3 is an upgraded version of the V2 ECRIS to be installed at the heavy ion injector at SPIRAL2. The source is under commissioning at LPSC since 2016. One of the main upgrades of the V3 concerns the new microwave injection system including two WR62 waveguide apertures. This new plug having two waveguide ports allows running the ECRIS with the double frequency heating mode by connecting two different high power microwave sources. For the investigation of this plasma feeding method a klystron generator at 18 GHz proving up to 2 kW microwave power was used together with a traveling wave tube amplifier with a 12.75-14.5 GHz bandwidth and 650 W maximum output power. Several experiments were carried out in order to verify the performance with respect to the single frequency operation. Different ion source configurations were investigated and different frequencies and power combinations were analyzed with the aim to maximize the high charge state ion production and to reduce the ion beam instability. The results are reported here.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUP09
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)

MOC4

SPIRAL1: A Versatile User Facility

29

L. Maunoury, A.T. Annaluru, O. Bajeat, P. Delahaye, M. Dubois, R. Frigot, S. Hormigos, P. Jardin, O. Kamalou, P. Lecomte, O. Osmond, G. Peschard, B. Retailleau, A. Savalle, J.C. Thomas, V. Toivanen, P. Ujic
GANIL, Caen, France
J. Angot
LPSC, Grenoble Cedex, France
E.K. Traykov
IPHC, Strasbourg Cedex 2, France

SPIRAL1 Upgrade hardware is now almost completed. The FEBIAD 1+ source has been tested for the production of new radioactive isotopes, PHOENIX Charge Breeder (CB) is in place reproducing nearly the charge breeding efficiencies measured at LPSC lab and the infrastructure is operational to welcome such new multifaceted devices. The commissioning phase started in the second semester of 2017. It has consisted of a stepwise process to test the upgrade of the SPIRAL1 facility from simple validation (operation of CB as a stand-alone source) up to the production of the first 1+/n+ Radioactive Ion Beam (RIB) with the 37K9+. This contribution will summarize the different steps completed successfully and especially the measurements done to validate each of the commissioning stages. These include e.g. ionization efficiencies for CB; beam line optics for 1+/n+ and charge breeding efficiencies. The remaining effort required to ensure the reliability of the complete system for routine RIB operation is also presented. A section will be dedicated to a new feature of SPIRAL1 facility: combination of CB and CIME leads to deliver stable beams with energies never done until now.

Slides MOC4 [2.712 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOC4

Export •

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

TUP09

Operation of the PHOENIX V3 ECRIS Applying Double Frequency Heating

94

F. Maimone, R. Lang, J. Mäder, P.T. Patchakui, K. Tinschert, D. van Rooyen
GSI, Darmstadt, Germany
J. Angot, L. Bonny, J. Jacob, A. Leduc, P. Sole, T. Thuillier
LPSC, Grenoble Cedex, France

PHOENIX V3 is an upgraded version of the V2 ECRIS to be installed at the heavy ion injector at SPIRAL2. The source is under commissioning at LPSC since 2016. One of the main upgrades of the V3 concerns the new microwave injection system including two WR62 waveguide apertures. This new plug having two waveguide ports allows running the ECRIS with the double frequency heating mode by connecting two different high power microwave sources. For the investigation of this plasma feeding method a klystron generator at 18 GHz proving up to 2 kW microwave power was used together with a traveling wave tube amplifier with a 12.75-14.5 GHz bandwidth and 650 W maximum output power. Several experiments were carried out in order to verify the performance with respect to the single frequency operation. Different ion source configurations were investigated and different frequencies and power combinations were analyzed with the aim to maximize the high charge state ion production and to reduce the ion beam instability. The results are reported here.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUP09

Export •

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