Inverse Free Electron Laser accelerator

Conference · Tue Sep 01 00:00:00 EDT 1992

OSTI ID:10190156

Fisher, A; Gallardo, J; van Steenbergen, A ^[1]; Sandweiss, J ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Yale Univ., New Haven, CT (United States)

The study of the INVERSE FREE ELECTRON LASER, as a potential mode of electron acceleration, is being pursued at Brookhaven National Laboratory. Recent studies have focussed on the development of a low energy, high gradient, multi stage linear accelerator. The elementary ingredients for the IFEL interaction are the 50 MeV Linac e{sup {minus}} beam and the 10{sup 11} Watt CO{sub 2} laser beam of BNL`s Accelerator Test Facility (ATF), Center for Accelerator Physics (CAP) and a wiggler. The latter element is designed as a fast excitation unit making use of alternating stacks of Vanadium Permendur (VaP) ferromagnetic laminations, periodically interspersed with conductive, nonmagnetic laminations, which act as eddy current induced field reflectors. Wiggler parameters and field distribution data will be presented for a prototype wiggler in a constant period and in a {approximately} 1.5 %/cm tapered period configuration. The CO{sub 2} laser beam will be transported through the IFEL interaction region by means of a low loss, dielectric coated, rectangular waveguide. Short waveguide test sections have been constructed and have been tested using a low power cw CO{sub 2} laser. Preliminary results of guide attenuation and mode selectivity will be given, together with a discussion of the optical issues for the IFEL accelerator. The IFEL design is supported by the development and use of 1D and 3D simulation programs. The results of simulation computations, including also wiggler errors, for a single module accelerator and for a multi-module accelerator will be presented.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10190156
• Report Number(s): BNL-47974; CONF-9206193-17; ON: DE93001963
• Resource Relation: Conference: Advanced accelerator concepts workshop,Port Jefferson, NY (United States),14-20 Jun 1992; Other Information: PBD: Sep 1992
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
LINEAR ACCELERATORS
FREE ELECTRON LASERS
WIGGLER MAGNETS
DESIGN
COMPUTERIZED SIMULATION
NSLS
WAVEGUIDES
CARBON DIOXIDE LASERS
ERRORS
BEAM OPTICS
430100
DESIGN, DEVELOPMENT, AND OPERATION