Burst mode FEL with the ETA-III induction linac

Author

Lasnier, C.J. ; Allen, S.L. ; Felker, B. ; Fenstermacher, M.E. ; Ferguson, S.W. ; Hulsey, S.D. ; Hooper, E.B. ; Jackson, M.C. ; Makowski, M.A. ; Meyer, W.H. ; Moller, J.M. ; Petersen, D.E. ; Sampayan, S.E. ; Stallard, B.W. ; Fields, W.F. ; Oasa, K.

Author_Institution

Lawrence Livermore Nat. Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

1554

Abstract

Pulses of 140 GHz microwaves have been produced at a 2 kHz rate using the ETA-III induction linac and IMP wiggler. The accelerator was run in bursts of up to 50 pulses at 6 MeV and greater than 2 kA peak current. A feedback timing control system was used to synchronize acceleration voltage pulses with the electron beam, resulting in sufficient reduction of the corkscrew and energy sweep for efficient FEL operation. Peak microwave power for short bursts was in the range 0.5-1.1 GW, which is comparable to the single-pulse peak power of 0.75-2 GW. FEL bursts of more than 25 pulses were obtained

Keywords

electron accelerators; free electron lasers; fusion reactor instrumentation; linear accelerators; microwave generation; wigglers; 0.5 to 1.1 GW; 0.75 to 2 GW; 140 GHz; 2 kA; 2 kHz; 6 MeV; ETA-III induction linac; IMP wiggler; acceleration voltage pulse synchronisation; burst mode FEL; corkscrew reduction; electron beam; energy sweep; feedback timing control system; peak microwave power; single-pulse peak power; Acceleration; Electron beams; Linear particle accelerator; Particle beams; Pulse compression methods; Pulse power systems; Pulsed power supplies; Timing; Undulators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308551

Filename

308551