Evaluation of charge breeding options for EURISOL

Delahaye, P.; Kester, O.; Barton, C. J.; Lamy, T.; Marie-Jeanne, M.; Wenander, F.

doi:10.1140/epja/i2010-11042-9

Cited by 25 publications

(14 citation statements)

References 54 publications

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“…They are now adopted by most ECR charge breeders world-wide: a minimum-B-structure consisting of axial coils and a hexapole, an off-axis RF injection, permitting to insert a long grounded tube into the plasma chamber for injecting the 1þ beam into the ECR plasma, opposite to the extraction side of the booster. Compared to its concurrent technique, charge breeding in Electron Beam Ion Sources (EBIS), ECR charge breeding has several pros and cons [14]. ECR charge breeders are simple machines, intensity capable (no limitations observed up to the mA regime, see for instance Ref.…”

Section: Charge Breeding Of Light (20rar90) Ionsmentioning

confidence: 99%

Charge breeding of light metallic ions: Prospects for SPIRAL

Delahaye

Maunoury

Vondrasek

2012

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Charge Breeding Of Light (20rar90) Ionsmentioning

confidence: 99%

Charge breeding of light metallic ions: Prospects for SPIRAL

Delahaye

Maunoury

Vondrasek

2012

Nuclear Instruments and Methods in Physics Research Section A:

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“…6 These parameters determine the breeding time, maximum charge state, transverse acceptance, and trap charge capacity. For REX-EBIS, 7 the ions are first cooled and bunched in a Penning trap filled with a buffer gas (REXTRAP) resulting in a beam with a sufficiently low emittance (10 π mm mrad) 8 to be accepted by the EBIS.…”

Section: B Ebis Charge Breedermentioning

confidence: 99%

Charge breeding results and future prospects with electron cyclotron resonance ion source and electron beam ion source (invited)

Vondrasek

Levand

Pardo

et al. 2012

Review of Scientific Instruments

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The Californium Rare Ion Breeder Upgrade (CARIBU) of the Argonne National Laboratory ATLAS facility will provide low-energy and reaccelerated neutron-rich radioactive beams for the nuclear physics program. A 70 mCi (252)Cf source produces fission fragments which are thermalized and collected by a helium gas catcher into a low-energy particle beam with a charge of 1+ or 2+. An electron cyclotron resonance (ECR) ion source functions as a charge breeder in order to raise the ion charge sufficiently for acceleration in the ATLAS linac. The final CARIBU configuration will utilize a 1 Ci (252)Cf source to produce radioactive beams with intensities up to 10(6) ions∕s for use in the ATLAS facility. The ECR charge breeder has been tested with stable beam injection and has achieved charge breeding efficiencies of 3.6% for (23)Na(8+), 15.6% for (84)Kr(17+), and 13.7% for (85)Rb(19+) with typical breeding times of 10 ms∕charge state. For the first radioactive beams, a charge breeding efficiency of 11.7% has been achieved for (143)Cs(27+) and 14.7% for (143)Ba(27+). The project has been commissioned with a radioactive beam of (143)Ba(27+) accelerated to 6.1 MeV∕u. In order to take advantage of its lower residual contamination, an EBIS charge breeder will replace the ECR charge breeder in the next two years. The advantages and disadvantages of the two techniques are compared taking into account the requirements of the next generation radioactive beam facilities.

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“…The relative success obtained with both charge breeders can be attested by the number of facilities which are starting using or developing one or the other technique. [2][3][4][5] On the roadmap to EURISOL, SPES, and SPIRAL 2 plan to use a PHOENIX ECR charge breeder, while ISOLDE has upgrade plans for REX-EBIS. However, for both techniques, a number of known issues remain.…”

Section: Charge Breeding For Isol Facilitiesmentioning

confidence: 99%

“…However, for both techniques, a number of known issues remain. 5 r While ECR charge breeders have very high intensity capabilities, EBIS are intrinsically limited by space charge capacity (up to 10 10 charges/bunch). r EBIS provide high charge states and correspondingly low mass-over-charge ratios down to A/q ∼ 3.…”

Section: Charge Breeding For Isol Facilitiesmentioning

confidence: 99%

“…Even though the relative complementarity of the two charge breeders could be exploited at EURISOL, i.e., EBIS for low to moderate intensity beams of exotic isotopes and ECRIS for higher intensities, 5 there is a wide range of situations for which the improvement of both charge breeder performances would be highly beneficial.…”

Section: Charge Breeding For Isol Facilitiesmentioning

confidence: 99%

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

Delahaye

Galatà

Angot³

et al. 2012

Review of Scientific Instruments

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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.

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Evaluation of charge breeding options for EURISOL

Abstract: Abstract. A comprehensive study of charge breeding techniques for the most ambitious ISOL -facility project, EURISOL, is presented here. It is based on results obtained during the past years at CERN -ISOLDE and LPSC Grenoble with charge breeders of both ECR and EBIS types.

Cited by 25 publications

References 54 publications

Charge breeding of light metallic ions: Prospects for SPIRAL

Charge breeding of light metallic ions: Prospects for SPIRAL

Charge breeding results and future prospects with electron cyclotron resonance ion source and electron beam ion source (invited)

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

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