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Kwan, J W; Grote, D P; Westenskow, G A
Lawrence Livermore National Lab., CA (United States). Funding organisation: US Department of Energy (United States)2003
Lawrence Livermore National Lab., CA (United States). Funding organisation: US Department of Energy (United States)2003
AbstractAbstract
[en] In a new approach to develop high current beams for heavy ion fusion, beam current at about 0.5 ampere per channel can be obtained by merging an array of high current density beamlets of 5 mA each. We have done computer simulations to study the transport of high current density beamlets and the emittance growth due to this merging process. In our RF multicusp source experiment, we have produced a cluster of 61 beamlets using minimum gas flow. The current density from a 0.25 cm diameter aperture reached 100 mA/cm2. The normalized emittance of 0.02 π-mm-mrad corresponds to an equivalent ion temperature of 2.4 eV. These results showed that the RF argon plasma source is suitable for producing high current density beamlets that can be merged to form a high current high brightness beam for HIF application
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4 Sep 2003; 0.4 Megabytes; 10. International Conference on Ion Sources; Dubna (Russian Federation); 8-13 Sep 2003; W-7405-ENG-48; Available from PURL: https://www.osti.gov/servlets/purl/15005014-CnoZCj/native/
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