DEVELOPMENT OF A MELCO HIGH INTENSITY MICROTRON FOR INDUSTRIAL APPLICATIONS

A high intensity microtron operated in a cw mode is under development at MELCO for industrial applications. The machine is of a racetrack type using a 500 MHz rf cavity with a total gap voltage of about 1 MV. Nonsynchronization by change of electron velocity of each turn can be compensated by adjusting orbit length of each turn by bending magnets with two sections. A 5 MeV-50kW machine, which is suitable for x-ray sterilization, is under construction to prove this new method. A 500 MHz cw gun has been also developed, and beam tests have showed that the emitted beam parameters agree well with the calculated results. The beam acceleration test will be carried out within this year.