Title :
High-rep rate photocathode injector for LCLS
Author :
Wang, X.J. ; Babzien, M. ; Ben-Zvi, I. ; Chang, X.Y. ; Pjerov, S. ; Woodle, M.
Author_Institution :
NSLS, Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
A preliminary design of the photocathode RF gun injection system for LCLS 120 Hz operation will be presented in this report. The injection system includes a photocathode RF gun, an emittance compensation solenoid magnet, an Mg cathode, a laser and laser beam delivery system and electron beam diagnostics. The photocathode RF gun for 120 Hz LCLS operation is based on the BNL gun IV with several improvements, such as better cooling and vacuum pumping capabilities, and accurate alignment. The thermal calculation of the RF gun, computer simulation of its performance, and both transverse and various longitudinal laser pulse shaping techniques will be presented
Keywords :
accelerator RF systems; accelerator magnets; collective accelerators; electron accelerators; electron guns; free electron lasers; particle beam diagnostics; particle beam extraction; particle beam injection; photocathodes; relativistic electron beams; vacuum pumps; 120 Hz; BNL gun IV; FEL; LCLS; Mg; SLAC linear accelerator; X-ray free electron laser; computer simulation; cooling; electron beam diagnostics; electron beams; emittance compensation solenoid magnet; high-repetition rate photocathode injector; laser beam delivery system; laser pulse shaping techniques; photocathode radiofrequency gun injection system; thermal calculation; vacuum pumping capabilities; Cathodes; Cooling; Electron beams; Free electron lasers; Pump lasers; Radio frequency; Saturation magnetization; Solenoids; Surface emitting lasers; X-ray lasers;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987334
