  A microwave ion source is used as an ion source of 100-MeV proton accelerator
at Korea Multipurpose Accelerator Complex (KOMAC). The specifications of the
ion source are 50 keV in energy and 20 mA in peak current. The plasma is
operated in CW mode using magnetron and the pulse beam is extracted using
semiconductor switch located in the extraction power supply. The beam
characteristics were measured based on the pulse voltage and current. A test
stand was also installed to study the beam characteristics of the ion source in
off-line. In this paper, the pulse beam characteristics of the ion source are
presented and the installation of the test stand is reported.
