Abstract
A continuous-wave surface-plasma negative hydrogen ion source has been used at 2 MeV tandem accelerator with vacuum insulation at the Budker Institute of Nuclear Physics since 2006. The source uses the hydrogen-cesium Penning discharge with plasma injection from hollow cathodes, and negative hydrogen ion production due to the interaction of plasma particles with the anode electrode surface. It routinely produces dc H- beam in the range 1 ÷ 9 mA in daily runs with accelerated proton beam delivery to the lithium target of our experimental device. Source parameters and maintenance statistics during long-term operation are discussed. Recent upgrades to increase the beam current production and transport are presented as well.
Published Version
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