Abstract
Nihon University and National Institute of Advanced Industrial Science and Technology have planned to develop an intense terahertz-wave (THz-wave) source based on coherent Cherenkov radiation (CCR) at Laboratory for Electron Beam Research and Application (LEBRA) in Nihon University. By passing an electron beam through a hollow conical dielectric with apex facing the incident electron beam, the wave front of CCR generated on the inner surface of the hollow conical dielectric is matched to the basal plane. The CCR matched to a circle plane wave is more powerful than conventional THz-wave sources based on electron accelerators. A hollow conical high-resistance silicon with a diameter of the basal plane of 40 mm and an inner diameter of 6 mm will emit the THz-wave beam with a macropulse energy of 14 mJ at LEBRA.
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