Measurements of terahertz radiation generated using a metallic, corrugated pipe

Journal Article · Wed Nov 23 00:00:00 EST 2016 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2016.11.041· OSTI ID:1310024

Bane, Karl ^[1]; Stupakov, Gennady ^[1]; Antipov, Sergey ^[2]; Fedurin, Mikhail ^[3]; Kusche, Karl ^[3]; Swinson, Christina ^[3]; Xiang, Dao ^[4]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
2. Euclid Techlabs LLC, Bolingbrook, IL (United States)
3. Brookhaven National Lab. (BNL), Upton, NY (United States)
4. Shanghai Jiao Tong Univ., Shanghai (China)

Here, 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 µm. 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, but with short rise time, 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. For the THz pulse we obtain and compare with calculations: the central frequency, the bandwidth, and the spectral power—compared to a diffraction radiation background signal.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-76SF00515; SC0009571; DE–AC02–76SF00515
• OSTI ID: 1310024
• Alternate ID(s): OSTI ID: 1410880
• Report Number(s): SLAC-PUB-16803; arXiv:1608.06337
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 844, Issue C; ISSN 0168-9002
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
general physics
ACCPHY
wakefields
terahertz
radiation
corrugated pipe