ECRIS2012 - List of Authors (Delahaye, P.)

Paper

Title

Page

Performance of the ANL ECR Charge Breeder with Low Mass Beams

177

R.C. Vondrasek, S.V. Kutsaev, R.C. Pardo, R.H. Scott
ANL, Argonne, USA
P. Delahaye, L. Maunoury
GANIL, Caen, France

Funding: This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357.
The Californium Rare Ion Breeder Upgrade (CARIBU) of the ATLAS superconducting linac facility aims at providing low-energy and reaccelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. These beams are obtained from fission fragments of a Cf-252 source, thermalized and collected into a low-energy particle beam by a helium gas catcher, mass analyzed by an isobar separator, and charge bred with an ECR ion source for acceleration in ATLAS. The charge breeding program had focused on optimizing beams in the mid-mass range, achieving high charge breeding efficiencies of both gaseous and solid species including 14.7% for the radioactive species ¹⁴³Ba²⁷⁺. In an effort to better understand the charge breeding mechanism, we recently focused on the low-mass species sodium and potassium which up to present have been difficult to charge breed efficiently. Charge breeding efficiencies of 10.1% for ²³Na⁷⁺ and 17.9% for ³⁹K¹⁰⁺ were obtained injecting stable Na⁺ and K⁺ beams from a surface ionization source. Details of these studies will be presented as well as simulations detailing the injection of the low charge state beams into the charge breeder.

Slides THYO04 [9.178 MB]

FRYA01

ECRISs at GANIL Today and Tomorrow

195

P. Jardin, O. Bajeat, C. Barue, C. Canet, P. Delahaye, M. Dubois, M. Dupuis, J.L. Flambard, R. Frigot, C. Leboucher, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond, J. Piot, E.K. Traykov
GANIL, Caen, France
B.J.P. Gall
IPHC, Strasbourg Cedex 2, France
C. Peaucelle
IN2P3 IPNL, Villeurbanne, France
J. Rubert, T. Thuillier
LPSC, Grenoble Cedex, France
O. Tuske
CEA/DSM/IRFU, France

GANIL (Grand accélérateur National d'Ions Lourds) uses ECRIS for producing stable and radioactive ions since more than 20 years. 2 ECR4 type IS deliver intense multi-charged stable ion beams of gaseous and metallic elements to cyclotrons for post acceleration to energies up to 100 A·MeV. A full permanent magnet ECRIS is also used for producing multi-charged radioactive ion beams in the frame of SPIRAL 1 (Système de Production d'Ions radioactifs Accélérés en Ligne, part 1). For atomic physic experiment, a high performance ECRIS named GTS developed at CENG/ Grenoble (France) is currently used to deliver high intensity, high charge state and low energy ion beams. To extend the range of radioactive ion beams available at GANIL, two ISOL (Isotope Separator On Line) projects are underway (SPIRAL2 and SPIRAL1 upgrade). In the frame of these projects, radiation hard singly-charged ECRIS, Q/A=1/3 ECRIS, 2.45 GHz deuteron ECRIS and permanent magnet TISS (Target Ion Source System) using an ECRIS are in development in parallel. A review of the main uses, current developments and performances obtained or expected with ECRISs at GANIL will be presented.

Slides FRYA01 [6.926 MB]

Paper	Title	Page
THYO04	Performance of the ANL ECR Charge Breeder with Low Mass Beams	177
	R.C. Vondrasek, S.V. Kutsaev, R.C. Pardo, R.H. Scott ANL, Argonne, USA P. Delahaye, L. Maunoury GANIL, Caen, France
	Funding: This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. The Californium Rare Ion Breeder Upgrade (CARIBU) of the ATLAS superconducting linac facility aims at providing low-energy and reaccelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. These beams are obtained from fission fragments of a Cf-252 source, thermalized and collected into a low-energy particle beam by a helium gas catcher, mass analyzed by an isobar separator, and charge bred with an ECR ion source for acceleration in ATLAS. The charge breeding program had focused on optimizing beams in the mid-mass range, achieving high charge breeding efficiencies of both gaseous and solid species including 14.7% for the radioactive species ¹⁴³Ba²⁷⁺. In an effort to better understand the charge breeding mechanism, we recently focused on the low-mass species sodium and potassium which up to present have been difficult to charge breed efficiently. Charge breeding efficiencies of 10.1% for ²³Na⁷⁺ and 17.9% for ³⁹K¹⁰⁺ were obtained injecting stable Na⁺ and K⁺ beams from a surface ionization source. Details of these studies will be presented as well as simulations detailing the injection of the low charge state beams into the charge breeder.
	Slides THYO04 [9.178 MB]

FRYA01	ECRISs at GANIL Today and Tomorrow	195
	P. Jardin, O. Bajeat, C. Barue, C. Canet, P. Delahaye, M. Dubois, M. Dupuis, J.L. Flambard, R. Frigot, C. Leboucher, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond, J. Piot, E.K. Traykov GANIL, Caen, France B.J.P. Gall IPHC, Strasbourg Cedex 2, France C. Peaucelle IN2P3 IPNL, Villeurbanne, France J. Rubert, T. Thuillier LPSC, Grenoble Cedex, France O. Tuske CEA/DSM/IRFU, France
	GANIL (Grand accélérateur National d'Ions Lourds) uses ECRIS for producing stable and radioactive ions since more than 20 years. 2 ECR4 type IS deliver intense multi-charged stable ion beams of gaseous and metallic elements to cyclotrons for post acceleration to energies up to 100 A·MeV. A full permanent magnet ECRIS is also used for producing multi-charged radioactive ion beams in the frame of SPIRAL 1 (Système de Production d'Ions radioactifs Accélérés en Ligne, part 1). For atomic physic experiment, a high performance ECRIS named GTS developed at CENG/ Grenoble (France) is currently used to deliver high intensity, high charge state and low energy ion beams. To extend the range of radioactive ion beams available at GANIL, two ISOL (Isotope Separator On Line) projects are underway (SPIRAL2 and SPIRAL1 upgrade). In the frame of these projects, radiation hard singly-charged ECRIS, Q/A=1/3 ECRIS, 2.45 GHz deuteron ECRIS and permanent magnet TISS (Target Ion Source System) using an ECRIS are in development in parallel. A review of the main uses, current developments and performances obtained or expected with ECRISs at GANIL will be presented.
	Slides FRYA01 [6.926 MB]