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arXiv · 1606.01870

Measurements of Terahertz Generation in a Metallic, Corrugated Beam Pipe

K. L. F. Bane·S. Antipov·M. Fedurin·K. Kusche·C. Swinson·D. Xiang
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Abstract

A method for producing narrow-band THz radiation proposes passing an ultra-relativistic beam through a metallic pipe with small periodic corrugations. We present results of a measurement of such an arrangement at Brookhaven's Accelerator Test Facility (ATF). Our pipe was copper and was 5 cm long; the aperture was cylindrically symmetric, with a 1 mm (radius) bore and a corrugation depth (peak-to-peak) of 60 um. In the experiment we measured both the effect on the beam of the structure wakefield and the spectral properties of the radiation excited by the beam. We began by injecting a relatively long beam compared to the wavelength of the radiation to excite the structure, and then used a downstream spectrometer to infer the radiation wavelength. This was followed by injecting a shorter bunch, and then using an interferometer (also downstream of the corrugated pipe) to measure the spectrum of the induced THz radiation.

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K. L. F. Bane, S. Antipov, M. Fedurin, K. Kusche, C. Swinson, D. Xiang. 2016-06-06. Measurements of Terahertz Generation in a Metallic, Corrugated Beam Pipe. https://arxiv.org/abs/1606.01870

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