Physics design for the ATA tapered wiggler 10. 6. mu. FEL amplifier experiment

Conference · Tue Oct 01 04:00:00 EDT 1985 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5950253

Fawley, W M

We are presently designing and constructing a high-gain, tapered wiggler 10.6 ..mu.. FEL amplifier to operate with the 50 MeV ATA e-beam. The initial experiments will be done with a constant period (lambda /SUB w/ =8 cm), 5 m-long linear wiggler. For an input laser power of 800 MW and electron beam brightness of 2.10/sup 5/ A/(rad-cm)/sup 2/, we hope to achieve a trapped particle fraction about0.5 and an energy extraction efficiency of about2% with a about10% taper in the wiggler magnetic field. This taper corresponds to decelerating the trapped particle approximately two full ponderomotive well (i.e. bucket) heights. In this talk, we discuss the physics motivations behind our tapered wiggler design and initial experimental diagnostics.

• Research Organization: Lawrence Livermore National Laboratory, Livermore, CA
• OSTI ID: 5950253
• Report Number(s): CONF-850504-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-32:5
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
430400 -- Particle Accelerators-- Storage Rings
ACCELERATORS
AMPLIFIERS
BEAM EXTRACTION
BEAMS
DESIGN
EFFICIENCY
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREE ELECTRON LASERS
LASERS
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETS
PARTICLE BEAMS
WIGGLER MAGNETS