skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Contribution to ion source developments for SPIRAL-2 and EURISOL

Abstract

Next generation facilities such as those designed in SPIRAL-2 and EURISOL projects require dedicated radioactive ion sources. Indeed, the ion source must be capable of operating under the very strong radiation generated by the primary beam in the production target. In the framework of the SPIRAL-2 design study, realistic and efficient solutions have been studied to face these unprecedented irradiation constraints. The considered options will be described and argued. In particular, considering forced electron beam induced are discharge-type ion sources, the reasons to start the development of a new prototype, the ionization by radial electron neat adaptation (IRENA) ion source, will be presented. The IRENA ion source is based on the electron beam generated plasma ion source. The design of the first prototype will be presented and discussed.

Authors:
; ; ; ; ; ; ; ; ; ;  [1];  [2]
  1. Institut de Physique Nucleaire d'Orsay, F-91406 Orsay Cedex (France)
  2. (France)
Publication Date:
OSTI Identifier:
20779029
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 77; Journal Issue: 3; Conference: 11. international conference on ion sources, Caen (France), 12-16 Sep 2005; Other Information: DOI: 10.1063/1.2172340; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DESIGN; ELECTRON BEAMS; ELECTRONS; ION SOURCES; IONIZATION; IRRADIATION; PLASMA; RADIOACTIVE ION BEAMS

Citation Formats

Lau, C., Cheikh Mhamed, M., Essabaa, S., Arianer, J., Bajeat, O., Croizet, H., Ducourtieux, M., Lefort, H., Huet-Equilbec, C., Jardin, P., Leroy, R., and GANIL, Boulevard H. Becquerel, BP 55027, F-14076 Caen Cedex 5. Contribution to ion source developments for SPIRAL-2 and EURISOL. United States: N. p., 2006. Web. doi:10.1063/1.2172340.
Lau, C., Cheikh Mhamed, M., Essabaa, S., Arianer, J., Bajeat, O., Croizet, H., Ducourtieux, M., Lefort, H., Huet-Equilbec, C., Jardin, P., Leroy, R., & GANIL, Boulevard H. Becquerel, BP 55027, F-14076 Caen Cedex 5. Contribution to ion source developments for SPIRAL-2 and EURISOL. United States. doi:10.1063/1.2172340.
Lau, C., Cheikh Mhamed, M., Essabaa, S., Arianer, J., Bajeat, O., Croizet, H., Ducourtieux, M., Lefort, H., Huet-Equilbec, C., Jardin, P., Leroy, R., and GANIL, Boulevard H. Becquerel, BP 55027, F-14076 Caen Cedex 5. Wed . "Contribution to ion source developments for SPIRAL-2 and EURISOL". United States. doi:10.1063/1.2172340.
@article{osti_20779029,
title = {Contribution to ion source developments for SPIRAL-2 and EURISOL},
author = {Lau, C. and Cheikh Mhamed, M. and Essabaa, S. and Arianer, J. and Bajeat, O. and Croizet, H. and Ducourtieux, M. and Lefort, H. and Huet-Equilbec, C. and Jardin, P. and Leroy, R. and GANIL, Boulevard H. Becquerel, BP 55027, F-14076 Caen Cedex 5},
abstractNote = {Next generation facilities such as those designed in SPIRAL-2 and EURISOL projects require dedicated radioactive ion sources. Indeed, the ion source must be capable of operating under the very strong radiation generated by the primary beam in the production target. In the framework of the SPIRAL-2 design study, realistic and efficient solutions have been studied to face these unprecedented irradiation constraints. The considered options will be described and argued. In particular, considering forced electron beam induced are discharge-type ion sources, the reasons to start the development of a new prototype, the ionization by radial electron neat adaptation (IRENA) ion source, will be presented. The IRENA ion source is based on the electron beam generated plasma ion source. The design of the first prototype will be presented and discussed.},
doi = {10.1063/1.2172340},
journal = {Review of Scientific Instruments},
number = 3,
volume = 77,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}
  • To take up the challenging issue of supplying a plasma ion source able to produce radioactive beams under extreme SPIRAL2 and EURISOL irradiation conditions, a research and development program has been initiated to work out ionization by radial electron neat adaptation (IRENA) ion source. Based on the electron beam generated plasma concept, the ion source is specifically adapted for thick target exploitation under intense irradiation. A validation prototype has been designed, constructed, and tested. First results obtained will be presented and commented. IRENA potential will be discussed, particularly in the framework of multimegawatt EURISOL.
  • 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 and 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 heremore » the guidelines of this R and D.« less
  • In-flight separation and Isotope Separation On -Line (ISOL) are the two main methods for producing radioactive ion beams. A brief description of the ISOLDE facility at CERN, which has accumulated 50 years of experience of the ISOL technique is given. The HIE -ISOLDE project, which is a major upgrade of the energy and intensity of ISOLDE is described. The long-term plans for ISOL in Europe culminate with the EURISOL facility which has been developed within a pan-European design study. The EURISOL concept resulting from this study is presented.
  • Spiral 2, the radioactive ion-beam facility of GANIL, will start its commissioning in 2009. After a brief recall of Spiral 2 beam requirements, emittance measurements of preliminary 1 mA O{sup 6+} test beams, done with the PHOENIX source for Spiral 2, are shown and discussed. The 28 GHz A-PHOENIX source, designed to better meet the Spiral 2 requirements, is presented and a progress report of its construction is proposed.
  • The SPIRAL 2 facility, currently under construction, will provide either stable or radioactive beams at high intensity. In addition to the high intensity of stable beams, high charge states must be produced by the ion source to fulfill the RFQ LINAC injection requirements: Q/A = 1/3 at 60 kV ion source extraction voltage. Excepting deuterons and hydrogen, most of the stable beam requests concern metallic elements. The existing 18 GHz electron cyclotron resonance ion source (ECRIS) Phoenix V2 designed at LPSC Grenoble has been used for the tests and will be the source for the SPIRAL 2 commissioning. The testsmore » performed at LPSC for calcium ({sup 40}Ca{sup 14+} and {sup 40}Ca{sup 16+}), nickel ({sup 58}Ni{sup 19+}), and sulfur ({sup 32}S{sup 11+}) are described and discussed. Due to the very high charge states required, the oven method has been chosen. An intensity of 1 pμA has been reached for those elements. The performance and the beam stability have been studied using different buffer gases, and some ionization efficiency preliminary results are given.« less