Title :
Laser system for the TTF photoinjector at Fermilab
Author :
Fry, A.R. ; Fitch, M.J. ; Melissinos, A.C. ; Bigelow, N.P. ; Taylor, B.D. ; Nezrick, F.A.
Author_Institution :
Rochester Univ., NY, USA
Abstract :
We have developed a solid-state laser system to meet the requirements of the TESLA Test Facility (TTF) photoinjector, currently under development at Fermilab. The laser produces a 1 MHz train of up to 800 equal-amplitude pulses with up to 1 mJ per pulse (0.8 J per macropulse) at λ=1054 nm. The laser pulse train is produced by a phase-stabilized, mode-locked, Nd:YLF oscillator and a fast selection Pockels cell. The pulses are amplified in an Nd:glass amplifier chain consisting of a multipass rod amplifier and a 5-pass zig-zag slab amplifier. The laser system employs chirped pulse amplification (CPA) to produce 10 ps pulses. After fourth harmonic generation of the laser to λ=263 nm, 10 nC electron bunches can be extracted from a Cs2 Te photocathode in the RF gun
Keywords :
accelerator RF systems; collective accelerators; electron accelerators; electron guns; electron sources; laser mode locking; linear accelerators; optical harmonic generation; particle beam bunching; particle beam injection; photocathodes; solid lasers; test facilities; 1 MHz; 1054 nm; 263 nm; 5-pass zig-zag slab amplifier; Cs2Te; Fermilab; LiYF4:Nd; Nd:glass amplifier chain; RF gun; TESLA Test Facility; TTF photoinjector; YLF:Nd; chirped pulse amplification; electron bunches; fast selection Pockels cell; fourth harmonic generation; multipass rod amplifier; phase-stabilized mode-locked oscillator; photocathode; solid-state laser system; Chirp; Frequency conversion; Laser mode locking; Optical pulses; Oscillators; Pulse amplifiers; Radiofrequency amplifiers; Slabs; Solid lasers; Test facilities;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.752845
