Title :
Streak camera measurements of electron bunch length from a copper photocathode in an RF gun
Author :
Hairapetian, G. ; Davis, P. ; Everett, M. ; Clayton, C. ; Joshi, C. ; Hartman, S. ; Park, S. ; Pellegrini, C.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Short laser pulses (sub 2 ps) of UV (λ=266 nm) light with 200 μJ/pulse are used to produce electrons from a copper cathode in an RF gun. The electron bunch length is measured by streaking the Cerenkov radiation (λ=530 nm) from a thin (250 μm) fused silica etalon. Streaks for both 0° and 70° laser incidence angles with respect to the cathode normal are presented with a temporal resolution of 3.6 ps. The shortest electron bunch length measured was 9 ps
Keywords :
Cherenkov radiation; beam handling techniques; copper; electron guns; electron sources; particle beam diagnostics; photocathodes; streak photography; 266 nm; 530 nm; 9 ps; Cerenkov radiation; Cu; Cu photocathode; RF gun; UV light; electron bunch length; laser incidence angles; short laser pulses; streak camera measurements; temporal resolution; thin fused silica etalon; Cameras; Cathodes; Copper; Electron beams; Free electron lasers; Laser mode locking; Length measurement; Optical pulses; Pulse amplifiers; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309531
