High-power electrostatic free-electron maser as a future source for fusion plasma heating: Experiments in the short-pulse regime

TitleHigh-power electrostatic free-electron maser as a future source for fusion plasma heating: Experiments in the short-pulse regime
Publication TypeJournal Article
Year of Publication1999
AuthorsW.H Urbanus, W.A Bongers, C.AJ van der Geer, P. Manintveld, J. Plomp, J. Pluygers, A.J Poelman, P.HM Smeets, A.GA Verhoeven, V.L Bratman, G.G Denisov, A.V Savilov, M.Y Shmelyov, N. Caplan, A.A Varfolomeev, S.V Tolmachev, S.N Ivanchenkov
JournalPhysical Review E
Volume59
Number5
Pagination6058-6063
Date PublishedMay
ISBN Number1063-651X
Abstract

A high-power,frequency-tunable electrostatic free-electron maser, being developed at the FOM Institute for Plasma Physics "Rijnhuizen," shows lasing at various frequencies. An output power of 730 kW at 206 GHz is generated by a 7.2-A, 1.77-MeV electron beam, and 380 kW at 165 GHz is generated by a 7.4-A, 1.65-MeV electron beam. In the present experimental setup, without recovery of the spent electron beam power, the pulse length is limited to 12 mu s. Nevertheless, the main issues, such as the possibility of high-power, single-mode operation and frequency tuning, have been confirmed. The experimental results and the dynamics of the laser process are well in accordance with simulations. [S1063-651X(99)03905-7].

DOI10.1103/PhysRevE.59.6058
PID

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