Adnan Haj Yahya received the M.Sc. degree in electric and electron engineering from Ariel University in Israel. Doing the Ph.D. degree in the accelerator center of Ariel University in Israel. We investigate methods for the generation and the detection of THz radiation. Also, We investigate methods for nondestructive diagnosis of relativistic electron beam and optical subsystem (crystals) used in a novel Hybrid RF-gun at Ariel University.