Author :
Aghamir, F. ; Barletta, W. ; Cline, David ; Dodd, J. ; Hartmann, Steve ; Joshi, C. ; Kolonko, James ; Luhmann, Neville ; McDermott, D. ; Pellegrini, C. ; Terrien, C.
Abstract :
Summary form only given. A high-brightness RF gun operating at 2.856 GHz is being used as the injector for an IR-FEL (free-electron laser) experiment. The RF gun consists of a disk loaded, 1.5 cell cavity and a photocathode in the end wall of the cavity. A strong electric field within the half cell near the photocathode quickly accelerates the electrons, thus preventing emittance blow-up. The photocathode is to be driven by a Nd:YAG laser system producing a 10-ps pulse. The power for the RF gun will be supplied by a 25-MW klystron. The RF power is coupled to the cavity via an S-band waveguide attached to the sidewall of the gun. The TE10 mode excited in the waveguide strongly couples to the π-mode with the RF gun while the zero mode is suppressed
Keywords :
free electron lasers; π-mode; 10 ps; 2.856 GHz; 25 MW; Nd:YAG laser system; S-band waveguide; TE10 mode; UCLA IR free electron laser; YAG:Nd; YAl5O12:Nd; disk loaded 1.5 cell cavity; electric field; electron acceleration; high-brightness RF gun; injector; klystron; laser modes; photocathode; strong coupling; zero mode suppression;
Conference_Titel :
Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on
Conference_Location :
Oakland, CA, USA
DOI :
10.1109/PLASMA.1990.110806
