Design of a harmonic generation FEL experiment at BNL

Conference · Tue Dec 31 04:00:00 EST 1991

OSTI ID:10110293

Ben-Zvi, I; Friedman, A; Hung, C M; Ingold, G; Krinsky, S; Yang, K M; Yu, L H ^[1]; Lehrman, I; Weissenburger, D ^[2]

---

1. Brookhaven National Lab., Upton, NY (United States)
2. Grumman Space and Electronics Corp., Princeton, NJ (United States)

We present design parameters of a harmonic generation FEL experiment to be carried out at the Accelerator Test Facility (ATF) at BNL. This experiment out as a proof-of-principle for the proposed UV-FEL User`s Facility at BNL. In the experiment we plan to triple the frequency of a CO{sub 2} seed laser by utilizing two superconducting wigglers and a dispersive section. The first wiggler will be used in conjunction with the CO{sub 2} seed laser to generate a ponderomotive force that will bunch the electron beam. The bunching will then be enhanced by the dispersion section. The second wiggler, tuned to the third harmonic of the seed laser will follow. In the beginning of the second wiggler the bunched beam will produce super-radiant emission (characterized by a quadratic growth of the radiated power), then the radiation will be amplified exponentially. The last part of the wiggler will be tapered. We plan to study the evolution of the various radiation growth mechanisms as well as the coherence of the tripled and exponentially amplified radiation. 12 refs.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10110293
• Report Number(s): BNL--46682; CONF-9108118--36; ON: DE92005004
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002
43 PARTICLE ACCELERATORS
430100
AMPLIFICATION
BEAM BUNCHING
CARBON DIOXIDE LASERS
DESIGN
DESIGN, DEVELOPMENT, AND OPERATION
FREE ELECTRON LASERS
HARMONIC GENERATION
LASERS AND MASERS
WIGGLER MAGNETS