A 32 ghz bragg free-electron maser (FEM) oscillator with axial guide magnetic field

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Cross, A.W. and Ginzburg, N.S. and He, W. and Jaroszynski, D.A. and Peskov, N.Y. and Phelps, A.D.R. and Whyte, C.G. (1998) A 32 ghz bragg free-electron maser (FEM) oscillator with axial guide magnetic field. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 407 (1). pp. 181-186. ISSN 0168-9002 (http://dx.doi.org/10.1016/S0168-9002(97)01391-0)

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Abstract

A narrow-band Free-Electron Maser (FEM) oscillator with a Bragg resonator was operated in the reversed guide field regime. A high-current accelerator generated the 300keV, 30A, 100ns electron beam. Radiation at 32GHz frequency and 500kW power, corresponding to ~5% efficiency, was measured. The measured FEM parameters agreed with predictions of a numerical simulation. The observed radiation frequencies compared well with ''cold'' microwave calibration of the cavity.

ORCID iDs

Cross, A.W. ORCID logoORCID: https://orcid.org/0000-0001-7672-1283, Ginzburg, N.S., He, W. ORCID logoORCID: https://orcid.org/0000-0001-7018-0527, Jaroszynski, D.A. ORCID logoORCID: https://orcid.org/0000-0002-3006-5492, Peskov, N.Y., Phelps, A.D.R. ORCID logoORCID: https://orcid.org/0000-0002-1100-1012 and Whyte, C.G. ORCID logoORCID: https://orcid.org/0000-0002-5431-2443;
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