Future carbon beams at SPIRAL1 facility: which method is the most efficient?

Compared to in-flight facilities, Isotope Separator On-Line ones can in principle produce significantly higher radioactive ion beam intensities. On the other hand, they have to cope with delays for the release and ionization which make the production of short-lived isotopes ion beams of reactive and...

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Bibliographic Details
Published in:Review of scientific instruments 2014-02, Vol.85 (2), p.02A504-02A504
Main Authors: Maunoury, L, Delahaye, P, Angot, J, Dubois, M, Dupuis, M, Frigot, R, Grinyer, J, Jardin, P, Leboucher, C, Lamy, T
Format: Article
Language:English
Subjects:
BREEDING
CARBON
CARBON DIOXIDE
CARBON MONOXIDE
CHARGE STATES
ECR ION SOURCES
ELECTRON CYCLOTRON-RESONANCE
GANIL CYCLOTRON
ISOTOPE SEPARATORS
PARTICLE ACCELERATORS
PLASMA
RADIOACTIVE ION BEAMS
RADIOISOTOPES
Scientific apparatus & instruments
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Summary:Compared to in-flight facilities, Isotope Separator On-Line ones can in principle produce significantly higher radioactive ion beam intensities. On the other hand, they have to cope with delays for the release and ionization which make the production of short-lived isotopes ion beams of reactive and refractory elements particularly difficult. Many efforts are focused on extending the capabilities of ISOL facilities to those challenging beams. In this context, the development of carbon beams is triggering interest [H. Frånberg, M. Ammann, H. W. Gäggeler, and U. Köster, Rev. Sci. Instrum. 77, 03A708 (2006); M. Kronberger, A. Gottberg, T. M. Mendonca, J. P. Ramos, C. Seiffert, P. Suominen, and T. Stora, in Proceedings of the EMIS 2012 [Nucl. Instrum. Methods Phys. Res. B Production of molecular sideband radioisotope beams at CERN-ISOLDE using a Helicon-type plasma ion source (to be published)]: despite its refractory nature, radioactive carbon beams can be produced from molecules (CO or CO2), which can subsequently be broken up and multi-ionized to the required charge state in charge breeders or ECR sources. This contribution will present results of experiments conducted at LPSC with the Phoenix charge breeder and at GANIL with the Nanogan ECR ion source for the ionization of carbon beams in the frame of the ENSAR and EMILIE projects. Carbon is to date the lightest condensable element charge bred with an ECR ion source. Charge breeding efficiencies will be compared with those obtained using Nanogan ECRIS and charge breeding times will be presented as well.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4828374