THPI016  光源加速器  8月1日 国際科学イノベーション棟5階 ホワイエ 13:30-15:30
Monochromaticity of Grating Transition Radiation
○アリセフ アレクサンダー,荒木 栄(高エネルギー加速器研究機),アルチュモフ コンスタンチン(トムスク工科大学),福田 将史,森川 祐(高エネルギー加速器研究機),ナウメンコ ゲナデ,ポチリツィン アレクサンダー(トムスク工科大学),セルゲエワ ダリア(国立研究核大学(MEPhI)),シェヴェレフ ミハイル,シキトフ ヅミツリ,スヒフ レオニド(トムスク工科大学),蓼沼 優一,丹波 智明(早稲田大学),照沼 信浩(高エネルギー加速器研究機),チシェンコ アェクセイ(国立研究核大学(MEPhI)),浦川 順治(高エネルギー加速器研究機),鷲尾 方一,森田 遼介(早稲田大学),コツャロフ アルテム(トムスク工科大学)
○Alexander Aryshev, Sakae Araki (High Energy Accelerator Research Organization), Konstantin Artyumov (Tomsk Polytechnic University), Masafumi Fukuda, Yu Morikawa (High Energy Accelerator Research Organization), Gennady Naumenko, Alexander Potylitsyn (Tomsk Polytechnic University), Daria Sergeeva (National Research Nuclear University (MEPhI)), Mikhail Shevelev, Dmitry Shkitov, Leonid Sukhikh (Tomsk Polytechnic University), Yuichi Tadenuma, Tomoaki Tanba (Waseda University), Nobuhiro Terunuma (High Energy Accelerator Research Organization), Alexey Tischenko (National Research Nuclear University (MEPhI)), Junji Urakawa (High Energy Accelerator Research Organization), Masakazu Washio, Ryosuke Morita (Waseda University), Artem Kotlyarov (Tomsk Polytechnic University)
A strong interest for developing of intense monochromatic THz sources is explained by its unique features, such as non-ionizing interaction with matter, weak absorption in dielectrics, etc. The KEK: LUCX facility can produce THz/subTHz radiation via coherent transition/diffraction radiation (CTR/CDR) mechanisms as the RMS electron bunch length is of the order of 0.15 mm. Spectral characteristics of CTR, in which the electron beam interacts with a grating instead of a flat metal foil used for conventional CTR, were studied and CTR continuous spectral distribution transformation into discrete spectral lines (so-called Grating Transition Radiation, GTR [1]) was confirmed. Moreover, GTR spectral line splitting for orientation angles much larger than the inverse Lorentz factor was observed. In this report, spectral measurement results and its comparison with Smith-Purcell radiation will be presented and further developments will be discussed. The work was supported by the JSPS-RFBR grant # 18-52-50002 YaF-a under the Japan-Russia Research Cooperative Program. [1] G.Naumenko, A.Aryshev, A.Potylitsyn et al. NIMB 402 (2017) 153