Candela Photo-Injector Experimental Results
  The CANDELA photo-injector is a two cell S-band photo-injector. The copper cathode is illuminated by a 500 fs Ti:sapphire laser. This paper presents energy spectrum measurements of the dark current and intense electron emission that occurs when the laser power density is very high. 
C. Travier, L. Boy, J.N. Cayla, B. Leblond, P. Georges, P. Thomas