A 130-260-Ghz, 1-Mw Free-Electron Maser for Fusion

TitleA 130-260-Ghz, 1-Mw Free-Electron Maser for Fusion
Publication TypeJournal Article
Year of Publication1995
AuthorsW.H Urbanus, W.A Bongers, G. van Dijk, C.AJ van der Geer, J.P Vanieperen, A. Vanderlinden, P. Manintveld, A.B Sterk, A.V Tulupov, A.GA Verhoeven, M.J van der Wiel, V.L Bratman, G.G Denisov, A.A Varfolomeev, S.N Ivanchenkov, A.S Khlebnikov, M. Catellino, A. Salop, M. Caplan
JournalNuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Date PublishedApr 11
ISBN Number0168-9002

We report on design work and testing of several main components of the FOM-Fusion-FEM project. Measurements on the electron gun are presented, showing a uniform beam current profile and a low halo current. A time-dependent simulation study of the interaction between the electron beam and the mm-waves shows that, for proper undulator tapering, longitudinal mode competition results in a quasi single-mode regime. Further, some high power and detailed low power measurements on mock-ups of the waveguide system are presented, showing that the reflection and outcoupling systems perform well.



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