Performance optimization of H{sup -} multicusp ion source for KIRAMS-30 cyclotron

KIRAMS-30 cyclotron has been developed and implemented for radio isotope production. For the purpose of producing negative hydrogen ions and low energy beam injection to the central region of KIRAMS-30, 10mA H− multicusp ion source with beam kinetic energies in the 20–30keV range and the normalized 4rms emittance less than 1mm mrad was installed. The optimized ion source operating condition is presented and the correlation between the extracted beam current and ion source parameters is described for the performance enhancement of the ion source.