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Experimental investigation of coherent Smith-Purcell radiation from a "flat" grating

A. Aryshev·B. Kalinin·G. Naumenko·A. Potylitsyn·R. Bardai·B. Ishkhanov·V. Shvedunov
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Abstract

Using the pre-bunched electron beam of 5-MeV linear accelerator the coherent Smith-Purcell radiation (CSPR) from a flat periodic target (made of conductive layers separated by dielectric gaps) in millimeter wavelength region has been investigated. The angular distribution of this radiation was measured with a narrow-band detector and experimental data agree with our theoretical calculations for similar kind of targets. Such properties of Smith-Purcell radiation as strong dependence of radiation wavelength on the observation angle overlapping with coherent radiation effect may be used for a noninvasive bunch length measurement. The possibility of using the room temperature detectors for single bunch measurements is demonstrated.

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A. Aryshev, B. Kalinin, G. Naumenko, A. Potylitsyn, R. Bardai, B. Ishkhanov, V. Shvedunov. 2003-11-27. Experimental investigation of coherent Smith-Purcell radiation from a "flat" grating. https://arxiv.org/abs/physics/0311133

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