A new design of electron linac is developed at Institute of High Energy Physics

Chinese Academy of Sciences.It adopts the spent beam of a high power klystron as the electron source

hence the elimination of an electron gun

and simplified structure of the linac.The test results of the prototype linac

however

showed that the output beam intensity was much less than the design specification.Efforts to improve the prototype linac have been made.The Parmela code calculation shows a new design that reduces the beam loss.The simulated beam current output reaches 100 mA

which suggests feasibility of the scenario.