Limiting energy spread at high laser intensities using phase space displacement. Technical report

Technical Report · Thu Aug 25 04:00:00 EDT 1983

OSTI ID:5409380

Takeda, H; Segall, S B

Phase space displacement is investigated as a method of reducing energy spread in free electron lasers producing long-wavelength (approx. 1 mm) at high laser intensity (approx. 10 to the 7th power - 10 to the 8th power W/sq cm). The technique is described and compared with the more conventional tapered wiggler that traps electrons in decelerating phase space buckets. A band model is developed to describe the movement of electrons around the phase space buckets and estimate the resulting energy spread. The energy spread obtained from the band model is compared with that obtained from a multiparticle computer simulation. Laser gain obtained by bucket capture is found to be comparable to gain obtained by phase space displacement at high intensities but energy spread is a factor of a few lower.

• Research Organization: KMS Fusion, Inc., Ann Arbor, MI (USA)
• OSTI ID: 5409380
• Report Number(s): AD-A-133322/8; KMSF-U-1360
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ACCELERATORS
AMPLIFICATION
AMPLIFIERS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
ELECTROSTATIC ACCELERATORS
ENERGY SPECTRA
EQUATIONS
EQUATIONS OF MOTION
EQUIPMENT
FREE ELECTRON LASERS
GAIN
LASERS
MAGNETS
PARTIAL DIFFERENTIAL EQUATIONS
REDUCTION
SIMULATION
SPECTRA
TRAPS
WIGGLER MAGNETS