A NEW TYPE SW LINAC USED IN INDUSTRIAL CT

A new type S band SW electron linac used in Industrial CT was designed and developed. Energy of electrons can reach 9Mev(pulse current intensity 150mA). The new type on-axis accelerating structure was operated in the π/2 mode and 2856MHz.The designed beam focal spot size is 1~1.5mm(without external focusing system). The calculation of particle dynamics, the result of main parameters’ measurement, and CT imaging test etc are given. defec imag Figure 1: Geometry blur. Figure 2: Defect resolution. So in the design of accelerator, we had to reduce the electron beam transverse size, which is the main method to increase the space resolution in CT imaging. Besides the beam intensity must be big enough so the dose by the electron beam collide the target can satisfy the high energy ICT’s imaging.