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  • 1
    Electronic Resource
    Electronic Resource
    Electron cyclotron resonance charge breeder (invited) : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 617-622 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Initially developed for radioactive ion beam production, the electron cyclotron resource (ECR) charge breeder shows that the beam injection of a primary beam inside an ECR ion source is a very general process for beam production. In this article we will review the latest results obtained on the ISN Grenoble test bench for the production of clockwise (CW) or pulsed metallic ion beams with the so-called "1+/n+" method. New results are given for CW operation where the efficiency is particularly optimized for application to multicharged radioactive ion production (for example, 3.5% for Zn1+→Zn9+, 4.2% for Pb1+→Pb24+, 5% for Rb1+→Rb15+). Different ion sources have been used to study the variation of the efficiency as a function of the energy of the 1+ primary beam. Charge state distributions are especially measured for Pb and Rb ions. A new mode of operation, the electron cyclotron resonance ion trap breeder/buncher, which permits the trapping and the bunching of the n+ ion beam is demonstrated and experimentally verified. The injection of a 400 nAeRb1+ ion beam leads to a 11.5 μAe peak current of the Rb15+ ion beam extracted during the first ms. The temporal evolution of the cumulated particle transformation and trapping efficiency is measured in the case of Rb15+. This new method shows that it is possible to modify the time structure of the injected beam, just by trapping the ions inside the plasma and re-extracting them by using the "afterglow pulsed mode." It will also be shown that it is possible to produce "multi-charged metallic ions" by using a primary source for the dissociation of a complex molecule and then by injecting the low charge state beam inside the multicharged electron cyclotron resonance ion source. A preliminary example will be presented for the production of U26+ by injection of U3+ obtained from dissociation of UF6 gas. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150331
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  • 2
    Electronic Resource
    Electronic Resource
    General purpose high-performance electron cyclotron resonance ion source for production of multicharged ions : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 656-658 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: There is a growing interest for high performance electron cyclotron resonance ion source (ECRIS) working in various environments and dedicated to various purposes. In this article we will present three typical machines using classical FeNdB radial magnets and coils. The first one, called "SuperNanogan II," is a fully permanent magnet machine, copying exactly the ECR4 magnetic structure. Here the purpose consists in producing high currents of high charge state ions on a high voltage platform (up to 250 μAe of 40Ar10+ and 48Ca11+). The second one, called "Super n+," is a very high magnetic field machine dedicated to be used as high performance charge booster for the 1+/n+ ISN/GANIL program. The source is built around a &nullset; 9 cm minimum |B| structure closing a maximum closed magnetic line of 1.8 T, so allowing functioning points from 2.45 to 35 GHz. The third one is a hybrid machine using an existing 4 T superconducting mirror field, where it is possible to place inside a well optimized 1.6 T FeNdB multipole. This machine can be used as a classical 6.4 to 35 GHz ECR ion source or just as an "ECR ion trap" in order to optimize the trapping of hydrogenlike ion for spectroscopic purpose. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148550
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  • 3
    Electronic Resource
    Electronic Resource
    Extraction studies on electron cyclotron resonance ion sources : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1350-1352 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The production of radioactive ion beams in the SPIRAL project requires very efficient ion sources delivering beams with good optical properties. To improve these properties, the extraction conditions are under study. This paper will present the last results obtained with a new extraction system and will compare them to a numerical simulation. This comparison shows that the axial magnetic field influences the multicharged ion beam if the space charge during the acceleration is not compensated. In order to decrease the axial magnetic field effect on the extraction zone, a parallel beam can be formed with a multielectrode system. The first tests of this system will be presented. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146662
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  • 4
    Electronic Resource
    Electronic Resource
    General review of recent developments for electron cyclotron resonance ion sources (invited) : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 867-872 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In this article we will recall the main characteristics of electron cyclotron resonance (ECR) discharges for the production of multicharged ions and we will show basic limitations of ECRIS performances using the elementary zero dimension ionization equilibrium model. Then we will present main domains where the ion source characteristics are the limiting factor for the applications. The improvement of the technology of compact ECR ion sources dedicated to applications in special environments like on line isotopic separators or high-voltage platforms will be discussed. Finally, we will describe advanced ion sources projects for future production of very highly charged ions generally connected to superconducting devices. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146826
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  • 5
    Electronic Resource
    Electronic Resource
    Pulsed ECR ion source using the afterglow mode (invited) (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2801-2805 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We make a review of the very first observations of a sharp current peak of multicharged ions observed at the turnoff of the rf power in ECR ion sources called the afterglow pulsed current. An elementary model is presented in order to explain the charge dependence of this phenomenon. Preliminary transmission measurement shows that this kind of current seems useful for accelerator applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142811
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  • 6
    Electronic Resource
    Electronic Resource
    ECRIS development for an on line isotopic separator at GANIL : Proceecings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2494-2496 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We plan to use the high-energy heavy ion beams provided by the GANIL facility to produce exotic beams using the on line isotopic separator approach. We will use an electron cyclotron resonance (ECR) ion source as ionizer. ECR ion sources show very good ionization efficiency and give high-charged states independently of the ion species. For future applications of exotic nuclei, we plan to post-accelerate them, so it would be very interesting to obtain high-charge states directly from the ion source of the isotopic separator with high ionization efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142923
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  • 7
    Electronic Resource
    Electronic Resource
    Ecris development at GANIL (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 288-290 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The realization of the ''O.A.E.'' project at GANIL (Fermi et al., 11th Conference on Cyclotrons and Their Applications, Tokyo, Oct. 1986) (modification of the stripping ratio between the two cyclotrons from 3.5 to 2.5) requires the use of an ECRIS producing an optimized current for ions such as Ar7+, Kr13+, Xe17+, Ta22+ Pb23+, and U24+. We describe the new ECR3 (Caprice source) built at GANIL and we show the last results with gaseous and metallic ions. With the O.A.I. project we plan to increase the beam current and the efficiency of the axial injection line by putting the source on a 100-kV insulated platform. ECR4 is a source with a maximum field corresponding to twice the resonance field for 14.5 GHz. The electrical power is 40 kW. The hexapole made of FeNdB has a field of 1.1 T on poles and weight of 22 kg. The UHF injection is coaxial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141324
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  • 8
    Electronic Resource
    Electronic Resource
    Charge state breeding applications with the ECR PHOENIX source: From low to high current production : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 717-719 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The electron cyclotron resonance (ECR) charge state breeding method based on the PHOENIX source is first dedicated to the continuous high charge state radioactive ion production for cyclotrons, due to their q/m requirements, and to the high charge state production efficiency. It can be used as an injector for RFQ, linacs, and synchrotrons either in cw or pulsed operation. The efficiency of the 1+ to the n+ ion production and the charge breeding time are the fundamental parameters of the method, their dependence with regard to the 1+ ion beam emittance injected has been measured and will be discussed with regard to the radioactive ion beam acceleration. The efficiency of the process slightly decreases when injecting ion beam emittances higher than 30 π mm mrad, and remains constant in the 1+ radioactive intensity range available today and in the future. The ECR ion trap tuning associated with the afterglow mode permits the ionization, the accumulation, and the extraction of the injected primary beam keeping interesting efficiencies suitable to pulsed accelerators. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1429778
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  • 9
    Electronic Resource
    Electronic Resource
    The upgrading of the multiply charged heavy-ion source minimafios
    Amsterdam : Elsevier
    Nuclear Instruments and Methods in Physics Research Section A: 243 (1986), S. 244-254 
    Details
    ISSN: 0168-9002
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-9002(86)90956-3
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  • 10
    Electronic Resource
    Electronic Resource
    Use of ECR ion sources at the AGRIPPA facility
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 23 (1987), S. 177-185 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-583X(87)90442-3
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