DEVELOPMENT OF 3 MeV, 30 kW DC ELECTRON ACCELERATOR AT EBC, KHARGHAR

A 3 MeV, 30 kW DC industrial electron accelerator has been designed and is in advanced stage of development at Electron Beam Center, Kharghar, Navi Mumbai. Electron beam at 5 keV is generated in electron gun with LaB6 cathode and is injected into accelerating column at a vacuum of 10 -7 torr. After acceleration, the beam is scanned and taken out in air through a 100 cm X 7 cm titanium window for radiation processing applications. The DC high voltage accelerating power supply is based on a capacitive coupled parallel fed voltage multiplier scheme operating at 120 kHz. The electron gun, accelerating column and high voltage multiplier are housed in accelerator tank filled with SF6 gas insulation at 6 kg/cm 2 . This paper describes about the design details and current status of the accelerator and its various subsystems.