Title :
Superconducting RF injector for high-power free-electron lasers (FEL)
Author :
Bluem, H. ; Todd, A.M.M. ; Neil, G.R.
Author_Institution :
Adv. Energy Syst., Princeton, NJ, USA
Abstract :
A key technology issue on the path to high-power FEL operation is the demonstration of reliable, high-brightness, photo-cathode injector operation. The physics and engineering conceptual design of a high-current superconducting RF injector has been completed and will be presented. The system, which is an outgrowth of the existing injector on the Jefferson Lab IR FEL, consists of an integrated room temperature DC photocathode gun and a 500 MHz superconducting RF accelerator. The device is compact and produces high-brightness beams. After DC acceleration in the gun, emittance compensation techniques are utilized to reduce the RMS normalized emittance by over a factor of two to ~2 π mm-mrad at the output of the RF accelerator. The design is based upon the existing geometry of the Jefferson Lab DC gun and will be capable of operation at 100 mA average beam current
Keywords :
accelerator RF systems; electron guns; electron sources; free electron lasers; linear colliders; particle beam injection; photocathodes; superconducting microwave devices; 100 mA; 293 K; 500 MHz; FEL; emittance compensation; high-power free-electron lasers; linear colliders; photocathode injector operation; room temperature DC photocathode gun; superconducting RF injector; Acceleration; Cathodes; Design engineering; Free electron lasers; Geometry; Laser theory; Physics; Radio frequency; Reliability engineering; Temperature;
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.2001.987440
