MOOT08 　加速器技術（レーザー２／RF空洞／RF源）　 8月5日 豊田講堂ホール 13:20 - 13:40

Spatial beam quality measurement of KU-FEL

○Yu Qin, Heishun Zen, Xiaolong Wang, Takashi Nakajima, Toshiteru Kii, Hideaki Ohgaki (IAE, Kyoto Univ.)

Spatial quality of a laser beam is very important, since it determines how much the beam can be focused. Clearly it is very preferable to have a beam with high spatial quality to use an FEL for nonlinear optics which is actually our main playground. We have carried out the knife-edge measuremet of KU-FEL at 11 micron. For comparison we have also taken burn-patterns on acryl plates.