The high-intensity ion currents are produced by two duoplasmatron ion sources. An electron beam in a gas in the presence of a magnetic field produces a stable gas discharge from which the ions are extracted.
Source 1 / Model 358direct negative extraction for protons H- and deuterons D-H- → 100 µA / D- → 80 µASource 2 / Model 358direct negative extraction for protons H- and deuterons D-, positive extraction for helium ions He- after charge changing channelH- → 100 µA / D- → 70 µA / He- → 20 µA