@inproceedings{oai:repo.qst.go.jp:00054850, author = {Yatsuka, Eiichi and Funaba, Hisamichi and Yamada, Ichihiro and Yasuhara, Ryo and McCormack, Oisin and Hatae, Takaki and Itami, Kiyoshi and 谷塚 英一 and 波多江 仰紀 and 伊丹 潔}, book = {Plasma 2017オンライン予稿集}, month = {Nov}, note = {The ITER radiological environment will not allow operators to calibrate the optics near the vacuum vessel. An in-situ calibration of spectral transmission from the collection optics to the detector by analyzing two Thomson scattering spectra resulting from two laser beams having different wavelengths was investigated experimentally in the large helical device (LHD). We can measure electron temperature accurately and calibrate spectral transmission at the same time even when spectral transmission degrades during the experimental campaign.}, title = {Verification of in-situ calibration on spectral transmission of Thomson scattering measurement system under radiological environment in ITER}, year = {2017} }