Title :
The TESLA X-FEL injector
Author :
Flöttmann, K. ; Piot, Ph ; Ferrario, M. ; Grigoryan, B.
Author_Institution :
DESY, Hamburg, Germany
Abstract :
The high-brightness beams demanded to drive future short-wavelength SASE FEL-based light sources result in stringent demands on the electron beam source. In the foreseen TESLA X-FEL, a slice emittance (over the cooperation length) of less than 1.6 mm-mrd and a rms bunch length of ~25 μm (corresponding to a peak current of 5 kA) are required at the undulator entrance. In this paper, we present the conceptual design of the photoinjector system for the TESLA X-FEL including Beam Dynamics studies performed with the codes ASTRA and HOMDYN. The proposed injector can generate 1 nC bunches with mm-mrd transverse emittances and longitudinal emittance of 60 keV-mm at an energy of 140 MeV
Keywords :
electron accelerators; electron sources; free electron lasers; high energy physics instrumentation computing; particle beam bunching; particle beam diagnostics; particle beam dynamics; photocathodes; relativistic electron beams; storage rings; wigglers; 1.6 mm; 140 MeV; 25 micron; 5 kA; 60 keV; ASTRA code; HOMDYN code; TESLA X-FEL injector; beam dynamics; bunch compressor; bunch length; cooperation length; free electron laser; high-brightness beams; injector layout; longitudinal emittance; peak current; photoinjector system; radiofrequency photoemission gun; short-wavelength SASE FEL-based light sources; slice emittance; transverse emittances; undulator entrance; Acceleration; Cathodes; Electron beams; Laser beams; Laser tuning; Light sources; Particle beams; Radio frequency; Space charge; Undulators;
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.2001.987335
