Prospects for advanced electron cyclotron resonance and electron beam ion source charge breeding methods for EURISOL

Abstract

As the most ambitious concept of isotope separation on line (ISOL) facility, EURISOL aims at producing unprecedented intensities of post-accelerated radioactive isotopes. Charge breeding, which transforms the charge state of radioactive beams from 1+ to an n+ charge state prior to post-acceleration, is a key technology which has to overcome the following challenges: high charge states for high energies, efficiency, rapidity and purity. On the roadmap to EURISOL, a dedicated R&D is being undertaken to push forward the frontiers of the present state-of-the-art techniques which use either electron cyclotron resonance or electron beam ion sources. We describe here the guidelines of this R&D.

Charge breeding of light metallic ions: Prospects for SPIRAL

“…The results of these tests, briefly summarized in the following, shall be detailed in a second article. Assuming that relevant modifications could be done to the GANIL Phoenix booster to attain comparable performances, such an optimized ECR charge breeder would not only be a powerful workhorse for SPIRAL but also would permit gaining appreciable understanding and know-how about this technique and applying it at future facilities [25]. The success of the optimization of the Phoenix charge breeder therefore depends greatly on a good interpretation of the latest progress made with the CARIBU charge breeder.…”

Optimizing charge breeding techniques for ISOL facilities in Europe: Conclusions from the EMILIE project

“…It is therefore a slightly downscaled version of the one presented in Ref. 4. The trap geometry is inspired from the ISOLDE ion COOLer (ISCOOL): 14 2 couple of rods, on which a RF voltage is applied, permit to confine the ions radially, while the longitudinal ion motion is controlled by blades inserted in the symmetry planes of the quadrupole.…”