Design of accelerator cavity in superconducting and normalconducting accelerators and simulation of accelerator systems

Modelling of superconducting and normal conducting cavity, analyzing of electromagnetic field behaviour inside the cavity that is modelled and analyzing of electron beam dynamics in accelerating cavities is studied in the linear accelerators. Also linear free accelerator system's components is modelled from gun to undulator systems in which laser is produced at the end of the free electron laser system. Gun cavity (1½ and 3½ cell), and following in the beam line first accelerator linac cavity (6+3 cell) and main linac cavity (9 cell) is designed by utilizing POISSON/SUPERFISH (2D) and COMPUTER SIMULATION TECHNOLOGY (CST, 3D) programs which uses data's from analytical calculation of geometric parameters of cavities. In the modelling systems, superconducting (Nb) cavity at 1.300 GHz operating frequency and normal conducting (Cu) cavity at 2.856 GHz operating frequency of which electric and magnetic field distribution inside the cavities is studied. Thus the best transmission line is constructed for electron beams throughout the beam line. Using the ASTRA code, electron beams, is extracted from photocathode by using the UV lasers, dynamics is modelled throughout to acceleration system in more detail inside the cavity. As a result of our study, laser wavelength is achieved 0.1-100 nm, peak brilliance at 〖10〗^30 - 〖10〗^31 foton/s/mrad^2/0.1%bg with the simulations mentioned above by using 3.5 GeV energies that comes from main acceleration linac. Key Words: Cavity, Laser, Undulator, Superconducting, Photocathode.