Author: Neben, D.E.
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TUPRC011 Ongoing Studies of the SuSI ECR Ion Source and Low Energy Beam Transport Line at the MSU NSCL 438
 
  • A.N. Pham, J. Fogleman, D. Leitner, G. Machicoane, D.E. Neben, S. Renteria, J.W. Stetson, L. Tobos
    NSCL, East Lansing, Michigan, USA
 
  Funding: Research supported by Michigan State University and National Science Foundation Award PHY-1415462.
Heavy ion accelerator laboratories for nuclear science and rare isotope research require a wide array of high intensity heavy ion beams. Due to their versatility and robustness, Electron Cyclotron Resonance (ECR) ion sources are the choice injectors for the majority of these facilities worldwide. Steady improvements in the performance of ECR ion sources have been successful in providing intense primary beams for facilities such as the National Superconducting Cyclotron Laboratory (NSCL). However, next generation heavy ion beam laboratories, such as the Facility for Rare Isotope Beam (FRIB), require intensities that approaching the limits of current possibility with state of the art ion source technology. In this proceedings, we present the ongoing low energy beam transport characterization efforts of a superconducting ECR ion source injector system at the MSU NSCL.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC011  
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TUPRC032 An Analysis of Fast Sputtering Studies for Ion Confinement Time 475
SPWR043   use link to see paper's listing under its alternate paper code  
 
  • D.E. Neben, G. Machicoane, A.N. Pham, J.W. Stetson
    NSCL, East Lansing, Michigan, USA
  • G. Machicoane
    FRIB, East Lansing, USA
  • G. Parsey
    MSU, East Lansing, Michigan, USA
  • J.P. Verboncoeur
    Michigan State University, East Lansing, Michigan, USA
 
  Funding: This work was supported by Michigan State University and the National Science Foundation: NSF Award Number PHY-1415462
Existing heavy ion facilities such as the National Superconducting Cyclotron Laboratory at Michigan State University rely on Electron Cyclotron Resonance (ECR) ion sources as injectors of highly charged ion beams. Long ion confinement times are necessary to produce dense populations of highly charged ions because of steadily decreasing ionization cross sections with increasing charge state. To further understand ion extraction and confinement we are using a fast sputtering technique first developed at Argonne National Laboratory (ANL) [1] to introduce a small amount of uranium metal into the plasma at a well-defined time. We present an analytical solution to the coupled ion density rate equations for using a piecewise constant neutral density to interpret the fast sputtering method.
*R. Vondrasek et al., Rev. Sci. Instrum. 73, 548-551 (2002).
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC032  
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