  In this paper, we focus on a PIG source for producing intense H-ions inside a
9 MeV cyclotron. The properties of the PIG ion source were simulated for a
variety of electric field distributions and magnetic field strengths using CST
particle studio. After analyzing secondary electron emission (SEE) as a
function of both magnetic and electric field strengths, we found that for the
modeled PIG geometry a magnetic field strength of 0.2 T provided the best
results in terms of the number of secondary electrons. Furthermore, at 0.2 T
the number of secondary electrons proved to be greatest regardless of the
cathode potential. Also the modified PIG ion source with quartz insulation
tubes was tested in KIRAMS-13 cyclotron by varying gas flow rate and arc
current, respectively. The capacity of the designed ion source was also
demonstrated by producing plasma inside the constructed 9MeV cyclotron. As a
result, the ion source is verified to be capable of producing intense H- beam
and high ion beam current for the desired 9 MeV cyclotron. The simulation
results provide experimental constraints for optimizing the strength of the
plasma and final ion beam current at target inside a cyclotron.
