Title :
Emittance measurements of the Advanced Photon Source photocathode rf gun
Author :
Lewellen, J.W. ; Borland, M.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
The Advanced Photon Source (APS) photocathode rf gun is the primary beam source for the APS Low-Energy Undulator Test Line (LEUTL) free-electron laser (FEL) experiment. In the current operating regime of LEUTL, peak current has been the dominant factor in determining FEL performance. As LEUTL´s operational wavelength is reduced, however, the beam emittance will play an increasingly important role. Thus, efforts are underway to more completely characterize, control, and predict photocathode gun performance. This paper reports the results of recent emittance measurements using the APS photocathode gun, and comparison of these measurements with simulation
Keywords :
accelerator cavities; electron beams; electron guns; electron sources; particle beam diagnostics; photocathodes; APS; Advanced Photon Source; Low-Energy Undulator Test Line; beam emittance; photocathode rf gun; Cathodes; Electron beams; Free electron lasers; Klystrons; Laser beams; Linear particle accelerator; Magnetic field measurement; Radio frequency; Solenoids; Wavelength measurement;
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.2001.987328
