Author :
Abo-Bakr, M. ; Anders, W. ; Bahrdt, J. ; Burkmann, K. ; Budz, P. ; Dressler, O. ; Durr, Hermann ; Durr, V. ; Eberhardt, W. ; Eisebitt, S. ; Feikes, J. ; Follath, R. ; Gaupp, A. ; Görgen, R. ; Goldammer, K. ; Hessler, S. ; Holldack, K. ; Jaeschke, E. ; Kam
Abstract :
BESSY is proposing a demonstration facility, called STARS, for a two-stage high-gain harmonic generation free electron laser (HGHG FEL). STARS is planned for lasing in the wavelength range 40 to 70 nm, requiring a beam energy of 325 MeV and peak current of 500 A. The facility consists of a normal conducting gun, three superconducting TESLA-type acceleration modules modified for CW operation, a single stage bunch compressor and finally a two-stage HGHG cascaded FEL. This paper describes the faciliy layout and the rationale behind the operation parameters.
Keywords :
beam handling techniques; electron accelerators; free electron lasers; optical harmonic generation; particle beam bunching; superconducting magnets; BESSY; CW operation; HGHG FEL; STARS; beam energy; electron volt energy 325 MeV; normal conducting gun; operation parameters; single stage bunch compressor; superconducting TESLA-type acceleration modules; two-stage high-gain harmonic generation FEL demonstrator; two-stage high-gain harmonic generation free electron laser; Acceleration; Electron beams; Free electron lasers; Frequency conversion; Optical pulses; Radio frequency; Superconducting photodetectors; Testing; Thermal loading; X-ray lasers;
