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Progress in development of high-power FELs with two-dimensional Bragg resonators

Ginzburg, N S and Peskov, N Y and Sergeev, A S and Arzhannikov, A V and Sinitsky, S L and Kalinin, P V and Phelps, A D R and Cross, A W (2001) Progress in development of high-power FELs with two-dimensional Bragg resonators. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 475 (1-3). pp. 287-295. ISSN 0168-9002

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Abstract

Theoretical and experimental studies of novel free-electron laser (FEL) schemes with 2-D Bragg resonators of planar and coaxial geometry are discussed. The highly selective properties of 2-D Bragg resonators are described including comparison with results of "cold" microwave measurements. First results of experimental studies of a planar W-band FEL based on the accelerator ELMI (INP RAS) are presented. Progress in a coaxial Ka-band FEL experiment under construction at the University of Strathclyde is described. A new project at the Budker Institute investigating a multibeam FEL where 2-D distributed feedback is used to synchronise several FEL units of planar geometry is also discussed.