Long-Base Free Electron Laser Resonant Cavity

Autor:	S.C. Bender, Q. D. Appert, A. C. Saxman, Eric L. Miller, T. Swann
Rok vydání:	1985
Předmět:	Diffraction Free electron model Materials science business.industry Wiggler Gain Physics::Optics Electron Laser law.invention Wavelength Optics law Physics::Accelerator Physics Atomic physics business Beam (structure)
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.976119
Popis:	A 65-meter resonant cavity has been constructed in order to experimentally determine the characteristics of long resonant cavities as would be required for a free electron laser1 (FEL). A version using normal incidence mirrors is reported here, and another that includes a grazing incidence mirror is forthcoming. Either version is designed to simulate a FEL operating at 0.5 micron wavelength and is near-concentric with a stability parameter of 0.98. Argon-ion plasma tubes simulate the laser gain that would be provided by a wiggler in an actual FEL. The cavity was constructed on a seismic slab and air turbulence effects were reduced by surrounding the beam with helium in 6" diameter tubes. AlignTept sensitivities are reported and compared to geometrical and diffraction predic-tions3' with good agreement.
Databáze:	OpenAIRE
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