@article{oai:repo.qst.go.jp:00048863,
 author = {芝間, 祐介 and 正木, 圭 and 逆井, 章 and 花田, 磨砂也 and 岡野, 文範 and 柳生, 純一 and 市毛, 尚志 and 三代, 康彦 and 神永, 敦嗣 and 笹島, 唯之 and 西山, 友和 and 櫻井, 真治 and 長谷川, 浩一 and 木津, 要 and 土屋, 勝彦 and 小出, 芳彦 and Yoshida, Kiyoshi and Javier, Alonso and Jose, Botija and Mercedes, Medrano and Esther, Rincon and Enrico, DiPietro and Sam, Davis and Valerio, Tomarchio and 早川, 敦郎 and 森本, 保 and 小川, 貴久 and 江尻, 満 and 水牧, 祥一 and 奥山, 利久 and 浅野, 史朗 and Team, JT-60SA and 芝間 祐介 and 正木 圭 and 逆井 章 and 花田 磨砂也 and 岡野 文範 and 柳生 純一 and 市毛 尚志 and 三代 康彦 and 神永 敦嗣 and 笹島 唯之 and 西山 友和 and 櫻井 真治 and 長谷川 浩一 and 木津 要 and 土屋 勝彦 and 小出 芳彦 and 吉田 清},
 journal = {Fusion Engineering and Design},
 month = {May},
 note = {The JT-60SA superconducting tokamak is being constructed under dual projects, the EU-JA international collaboration framework and Japanese national programme. To suppress magnetic field error to less than 0.01%
with respect to the toroidal magnetic field for good confinement of plasma, QST has developed a precise onsite assembly technology of tokamak components such as vacuum vessel (VV) and toroidal magnetic field coils (TFC) with size of over 10-m scale. Prior to an onsite assembly, the assembly process is carefully simulated in a three dimension CAD model, through which the location and number of the reference points for the assembly are evaluated to determine each component position. In the onsite assembly, the tokamak components are positioned by measuring with the laser tracker of a 0.5 mm spatial resolution and assembled by adjusting with shims and splice plates. The onsite assembly of the VV 340° sector has been succeeded in an allowable accuracy of +8/−4 mm with the 10 m diameter by welding sectors, each of which was circumferentially segmented and manufactured by taking into account the deformation due to the welding. The remaining 20° sector will be installed after the TF coils installation. The metrology developed for the onsite assembly of the JT-60SA is expected to be applicable to ITER whose size is the double of JT-60SA.},
 pages = {1--8},
 title = {Assembly technologies of the Vacuum Vessel on JT-60SA with high accuracy},
 volume = {125},
 year = {2018}
}