DEVELOPMENT OF PORTABLE X-BAND LINAC X-RAY SOURCE FOR NON-DESTRUCTIVE TESTING

We are developing a portable X-ray non-destructive testing (NDT) system using 9.4GHz X-band linear accelerator (linac) with 250kW magnetron. This X-ray source ’ energy is less than 950 keV for Japanese regulation. The 950 keV X-band linac X-ray generator is under development for corrosion wastage of tubes and condition based maintenance of impeller pumps. We have chosen the 250kW magnetron so that the RF heat loss is remarkably reduced. This design yields compactness and portable. This system consists of the X-band magnetron, modulator, thermionic 20kV electron gun, X-band linac, and metal target of X-ray generation. We aim that X-ray spot size is less than 1mm. We designed the linac structure of the pi mode at low?energy parts and the pi/2 mode at high energy parts, and analyzed the electromagnetic field by SUPERFISH and the electron beam dynamics by GPT.?We finished cold test, RF aging and electron beam emission. Now, we are performing electron accelerating test and X-ray generation. Details of the total system and demonstration experiment are presented