Project on the superposition of beamlines for parametric X-ray radiation and coherent transition radiation in the THz region at LEBRA

11th International Symposium on Radiation from Relativistic Electrons in Periodic Structures

Hayakawa, Y.^1 ; Hayakawa, K.^1 ; Inagaki, M.^1 ; Kaneda, T.^2 ; Nakao, K.^1 ; Nogami, K.^1 ; Sakae, T.^2 ; Sakai, T.^1 ; Sei, N.^3 ; Takahashi, Y.^4 ; Tanaka, T.^1

Laboratory for Electron Beam Research and Application (LEBRA), Institute of Quantum Science, Nihon University, Narashinodai 7-24-1, Funabashi

274-8501, Japan^1

School of Dentistry at Matsudo, Nihon University, Sakaecho-Nishi 2-870-1, Matsudo

271-8587, Japan^2

Research Institute for Measurement and Analytical Instrumentation, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba

305-8568, Japan^3

Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK-PF), 1-1 Oho, Tsukuba, Ibaraki

305-0801, Japan^4

关键词: Application studies;    Bending magnets;    Coherent Transition Radiation;    Electron linacs;    Frequency regions;    Parametric X-ray radiation;    Parametric X-rays;    Research and application;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/732/1/012013/pdf
DOI  :  10.1088/1742-6596/732/1/012013

来源: IOP

【 摘 要 】

A new project to develop a terahertz (THz)-wave light source is in progress at the parametric X-ray (PXR) beamline of the Laboratory for Electron Beam Research and Application (LEBRA) at Nihon University. The THz-wave source is based on coherent transition radiation (CTR) emitted from a metal foil inserted downstream from a crystal target that is the PXR radiator. Beryllium or titanium foil is the most promising candidate for a THz-wave radiator. Since the electron linac of LEBRA was developed for a free electron laser (FEL), electron beam with bunch length of 1 ps (rms) can be provided by magnetic bunching at the bending magnet section. Thus, very intense coherent transition radiation (CTR) can be obtained in the frequency region around 1 THz. The results of preliminary experiments for CTR production suggested that sufficiently intense THz-CTR can be obtained using the LEBRA linac. In order to realize a THz-wave source for practical application studies, we have a plan to add the extraction feature for THz waves to the PXR beamline.