A compact high-current circular microtron

A compact high-current circular microtron has been developed. This microtron is operated with the Russian second type of acceleration to reduce its size and has an electron gun outside the accelerating cavity to increase the beam current. The uniform magnetic field is about 0.19 T, and the energy gain per orbit is about 0.9 MeV. The beam current at a microwave power of 2.2 MW is 200 mA at 4 MeV and 80 mA at 9.5 MeV.