DESIGN STUDY OF COMPACT MEGA-WATT CLASS FEL AMPLIFIER BASED ON THE VISA UNDULATOR.
The strong focusing VISA undulator is presented in this report. The proposed FEL will operate at the 1 {micro}m water window. Extensive simulations were performed to optimize an FEL amplifier based on the two-meter long VISA undulator which has a period of 1.8 cm and an undulator parameter K = 1.26. The betatron function inside the VISA undulator is about 30 cm. For an electron beam with a peak current {approx}1 kA and a normalized emittance of 5 mm-mrad, the FEL peak power can exceed 1 GW within the 2 m VISA undulator using a 5 kW peak power seed laser. Such a device can produce a megawatt of average power for a 700 MHz rep rate. The transverse distribution of the FEL radiation along the undulator, as well as after the undulator, is explored by numerical simulation. The FEL power density at 5 m downstream from the undulator is less than 100 kW/cm{sup 2} for this MW-class FEL. We will also discuss the feasibility of an experimental demonstration of the laser seeded FEL amplifier based on the 2-m VISA undulator at the NSLS Source Development Lab (SDL).
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE/SC
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 862133
- Report Number(s):
- BNL-75204-2005-CP; R&D Project: LS-001; KC0204011; TRN: US0600386
- Resource Relation:
- Conference: FEL 2005; STANFORD UNIVERSITY, STANFORD, CA; 20050821 through 20050826
- Country of Publication:
- United States
- Language:
- English
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THE VISA FEL UNDULATOR
EXPERIMENTAL CHARACTERIZATION OF SEEDED FEL AMPLIFIER AT THE NSLS SDL.