Shielding design of 9MeV electron linear accelerator

High-energy X-rays produced by electron linear accelerator,it has been widely used in radiation treatment,industry inspection,inspection of national defence and CIQ large-scale container etc.Because the rays with high energy,it can make inspection to big-type parts and thick metal material.Its' radiant intension higher tenfold to hundredfold compare with the betatron,spending shorter time on radiogram,higher resolution rate.Hope stream to strong,spot to small commonly.Make use of accelerator to produce electron beam radiation products,full beam-power occupied 80%～90% in using-power.In the radioprotection on this accelerator,must to calculate the roof thickness except to the thickness of shielding safewall all around and maze,in order to make ambience value reaching to a level as low as reasonably achievable.