Title :
An analytical model of the emittance of a field emission array cathode for high performance free electron lasers
Author :
Jensen, Kevin L. ; O´Shea, Patrick G. ; Feldman, Donald W. ; Shaw, Jonathan L.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
Advanced particle accelerators and free electron lasers (FEL\´s) require high brightness electron sources. A practical figure of merit for beam "optical quality" is rms emittance, and it relates to the ability to focus the electron beam within the laser beam optical mode within the wiggler for the laser threshold to be reached.
Keywords :
cathodes; electron beams; electron field emission; free electron lasers; laser beams; particle accelerators; brightness electron sources; electron beam; field emission array cathode; free electron lasers; laser beam optical mode; laser threshold; optical quality; particle accelerators; Analytical models; Cathodes; Electron emission; Electron optics; Field emitter arrays; Free electron lasers; Laser beams; Laser modes; Optical arrays; Optical beams;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2009. IVNC 2009. 22nd International
Conference_Location :
Shizuoka
Print_ISBN :
978-1-4244-3587-6
Electronic_ISBN :
978-1-4244-3588-3
DOI :
10.1109/IVNC.2009.5271831
