Characterization of an RF-driven plasma ion source for heavy ion fusion

descriptionPublicationkeyboard_double_arrow_right Article 08 Jul 2004 United States Publisher:IEEEJournal:Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440), volume 5, pages 3,300-3,302

Authors: Westenskow, G A; Hall, R P; Halaxa, E; Kwan, J W;

doi: 10.1109/pac.2003.1289894

Characterization of an RF-driven plasma ion source for heavy ion fusion

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Abstract

We are testing a high-current-density high-brightness Argon-Ion Source for Heavy Ion Fusion applications. The 100-kV 20-{micro}s source has produced up to 5 mA of Ar{sup +} in a single beamlet. The extraction current density is 100 mA/cm2. We have measured the emittance of the beamlet, and the fraction of Ar{sup ++} ions under several operating conditions. We present measurements of the extracted current density as a function of RF power and gas pressure ({approx} 2 mT), current density uniformity, and energy dispersion (due to charge exchange). We are testing a 80-kV 61-hole multi-beamlet array that will produce a total current > 200 mA. In the current experiments the beamlets are not merged into a single beam. A 500-kV experiment where the beamlets will be merged to a produce 0.5-A beam is being planned.

Country

United States

Related Organizations

University of North Texas
United States
Lawrence Berkeley National Laboratory
United States
Lawrence Livermore National Laboratory
United States
University of California, San Francisco
United States

Keywords

Ion Sources, Plasma, Testing, Heavy Ions, Current Density, 43, Accelerators

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