Developing high brightness and high current beams for HIF injectors

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The US Heavy Ion Fusion Virtual National Laboratory is continuing research into ion sources and injectors that simultaneously provide high current (0.5-1.0 Amps) and high brightness (normalized emittance better than 1.0 {pi}-mm-mr). The central issue of focus is whether to continue pursuing the traditional approach of large surface ionization sources or to adopt a multiaperture approach that transports many smaller ''beamlets'' separately at low energies before allowing them to merge. For the large surface source concept, the recent commissioning of the 2-MeV injector for the High Current eXperiment has increased our understanding of the beam quality limitations for these sources. ... continued below

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Ahle, Larry; Grote, Dave & Kwan, Joe May 24, 2002.

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Description

The US Heavy Ion Fusion Virtual National Laboratory is continuing research into ion sources and injectors that simultaneously provide high current (0.5-1.0 Amps) and high brightness (normalized emittance better than 1.0 {pi}-mm-mr). The central issue of focus is whether to continue pursuing the traditional approach of large surface ionization sources or to adopt a multiaperture approach that transports many smaller ''beamlets'' separately at low energies before allowing them to merge. For the large surface source concept, the recent commissioning of the 2-MeV injector for the High Current eXperiment has increased our understanding of the beam quality limitations for these sources. We have also improved our techniques for fabricating large diameter aluminosilicate sources to improve lifetime and emission uniformity. For the multiaperture approach, we are continuing to study the feasibility of small surface sources and a RF induced plasma source in preparation for beamlet merging experiments, while continuing to run computer simulations for better understanding of this alternate concept. Experiments into both architectures will be performed on a newly commissioned ion source test stand at LLNL called STS-500. This stand test provides a platform for testing a variety of ion sources and accelerating structures with 500 kV, 17-microsecond pulses. Recent progress in these areas will be discussed as well as plans for future experiments.

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INIS; OSTI as DE00799647

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  • Laser and Particle Beams, Moscow (RU), 05/26/2002--05/31/2002

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  • Report No.: LBNL--50870
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 799647
  • Archival Resource Key: ark:/67531/metadc737824

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  • May 24, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 12:39 p.m.

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Ahle, Larry; Grote, Dave & Kwan, Joe. Developing high brightness and high current beams for HIF injectors, article, May 24, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc737824/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.