Radio-Frequency Beam Conditioner for Fast-Wave Free-Electron Generators of Coherent Radiation

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Physical Review Letters

OSTI ID:937212

Sessler, Andrew M; Whittum, D H; Yu, L

A method for conditioning electron beams is proposed, making use of the TM{sub 210} mode of microwave cavities, to reduce the axial velocity spread within the beam, in order to enhance gain in resonant electron beam devices, such as the free-electron laser (FEL). Effectively, a conditioner removes the restriction on beam emittance. The conditioner is analyzed using a simple model for beam transport and ideal RF cavities. Analysis of an FEL is employed to evaluate performance with reduced axial velocity spread. Examples of FELs are presented showing the distinct advantage of conditioning.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Accelerator& Fusion Research Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 937212
• Report Number(s): LBL-31006; PRLTAO; TRN: US200819%%45
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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BEAM EMITTANCE
BEAM TRANSPORT
CAVITIES
COHERENT RADIATION
ELECTRON BEAMS
FREE ELECTRON LASERS
PERFORMANCE
VELOCITY