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http://dx.doi.org/10.5515/KJKIEES.2018.29.6.407

Study of Coherent High-Power Electromagnetic Wave Generation Based on Cherenkov Radiation Using Plasma Wakefield Accelerator with Relativistic Electron Beam in Vacuum  

Min, Sun-Hong (Korea Institute of Radiological and Medical Sciences, KIRAMS)
Kwon, Ohjoon (Institute for Basic Science Center for Axion and Precision Physics Research)
Sattorov, Matlabjon (Center for THz-Driven Biological Systems, Department of Physics and Astronomy, Seoul National University & Seoul-Teracom, Inc.)
Baek, In-Keun (Manufacturing Technology Center, Samsung Electronics Co., Ltd.)
Kim, Seontae (Center for THz-Driven Biological Systems, Department of Physics and Astronomy, Seoul National University)
Hong, Dongpyo (Center for THz-Driven Biological Systems, Department of Physics and Astronomy, Seoul National University)
Jang, Jungmin (Center for THz-Driven Biological Systems, Department of Physics and Astronomy, Seoul National University)
Bhattacharya, Ranajoy (Hanwha Corporation)
Cho, Ilsung (Korea Institute of Radiological and Medical Sciences, KIRAMS)
Kim, Byungsu (Korea Institute of Radiological and Medical Sciences, KIRAMS)
Park, Chawon (Korea Institute of Radiological and Medical Sciences, KIRAMS)
Jung, Wongyun (Korea Institute of Radiological and Medical Sciences, KIRAMS)
Park, Seunghyuk (Hanwha Corporation)
Park, Gun-Sik (Center for THz-Driven Biological Systems, Department of Physics and Astronomy, Seoul National University & Seoul-Teracom, Inc.)
Publication Information
Abstract
As the operating frequency of an electromagnetic wave increases, the maximum output and wavelength of the wave decreases, so that the size of the circuit cannot be reduced. As a result, the fabrication of a circuit with high power (of the order of or greater than kW range) and terahertz wave frequency band is limited, due to the problem of circuit size, to the order of ${\mu}m$ to mm. In order to overcome these limitations, we propose a source design technique for 0.1 THz~0.3 GW level with cylindrical shape (diameter ~2.4 cm). Modeling and computational simulations were performed to optimize the design of the high-power electromagnetic sources based on Cherenkov radiation generation technology using the principle of plasma wakefield acceleration with ponderomotive force and artificial dielectrics. An effective design guideline has been proposed to facilitate the fabrication of high-power terahertz wave vacuum devices of large diameter that are less restricted in circuit size through objective verification.
Keywords
Plasma Dielectric Wake-Field Accelerator; Ponderomotive Force; High Power Millimeter-Terahertz Waves;
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