Harmonic generation in VUV/x-ray range at the Duke storage ring FEL using electron beam outcoupling

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:238844

Litvinenko, V N; Burnham, B; Madey, J M.J. ^[1]

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1. Duke Univ., Durham, NC (United States); and others

We suggest using the OK-4 FEL operating in giant pulse mode to generate intracavity optical power at a level of hundreds of megawatts. These levels of power are sufficient to generate harmonics in the electron beam density. The prebunched electron beam then radiates coherently in an additional wiggler which is tuned on a harmonic of the OK-4 wavelength. The electron beam is turned by an achromatic bend into this wiggler, and harmonic radiation propagates with a small angle with respect to the OK-4 optical axis. This radiation will pass around the mirror of the OK-4 optical cavity and can then be utilized. This electron outcoupling scheme was suggested by N.A. Vinokurov as a method of optics independent outcoupling for high power FELs where electron beam bunching is provided in the master oscillator. This scheme is perfectly suited for optics independent harmonic generation. We suggest to operate the OK-4 FEL as a master oscillator in the UV range of 100 to 250 nm where conventional optics are available. This harmonic generation scheme would allow us to cover the VUV and soft X-Ray range with tunable coherent radiation. In this paper we present the possible layout of this system at the Duke storage ring and its expected operating parameters.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• OSTI ID: 238844
• Report Number(s): BNL--61982-Absts.; CONF-9508156--Absts.; ON: DE96002729; CNN: Grant N00014-94-1-0818
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
43 PARTICLE ACCELERATORS
ELECTRON BEAMS
EXTREME ULTRAVIOLET RADIATION
FREE ELECTRON LASERS
HARMONIC GENERATION
STORAGE RINGS
WIGGLER MAGNETS
X RADIATION