• DocumentCode
    877591
  • Title

    The 4X Source

  • Author

    Smith, H. Vernon, Jr. ; Allison, Paul ; Sherman, Joseph D.

  • Author_Institution
    AT-2, MS H818 Los Alamos National Laboratory, Los Alamos, NM 87545 USA
  • Volume
    32
  • Issue
    5
  • fYear
    1985
  • Firstpage
    1797
  • Lastpage
    1799
  • Abstract
    Our Penning surface-plasma source (SPS) discharge chamber was enlarged 4X in two dimensions. To date, three pulsed discharge modes have been studied: two with noisy arc (¿20% H- current fluctuations) and one with quiescent arc (¿1% H- current fluctuations). Lower arc magnetic field and higher H2 gas flow allow switching from the noisy to the quiescent mode. The noisy modes yield up to 120 mA of 29-keV H- beam; for 110 mA at 29 keV, the two-dimensional normalized rms emittance is 0.017 x 0.018 ¿·cm·mrad. The quiescent mode yields 75 mA of 29-keV H- beam; for 67 mA at 24 keV, the emittance is 0.011 x 0.012 ¿·cm·mrad.
  • Keywords
    Fault location; Fluctuations; Laboratories; Magnetic field measurement; Magnetic fields; Magnetic noise; Particle beams; Surface discharges; Synthetic aperture sonar; Temperature;
  • fLanguage
    English
  • Journal_Title
    Nuclear Science, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9499
  • Type

    jour

  • DOI
    10.1109/TNS.1985.4333727
  • Filename
    4333727
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=877591