@article{oai:repo.qst.go.jp:00048195,
 author = {櫻井, 武尊 and 井口, 将秀 and 中平, 昌隆 and 稲垣, 隆 and 松井, 邦浩 and 小泉, 徳潔 and 櫻井 武尊 and 井口 将秀 and 中平 昌隆 and 稲垣 隆 and 松井 邦浩 and 小泉 徳潔},
 issue = {111},
 journal = {Fusion Engineering and Design},
 month = {Nov},
 note = {Japan Atomic Energy Agency (JAEA) performed a trial of A1 Segment manufacturing of Toroidal Field (TF) coil structure, which is a piece with a radius of curvature 3 m with square channel for coil. Even though both-side welding (balance welding) was preferred to one-side welding considering the welding deformation, it could not be applied to the previous trial due to the difficulty of overhead or horizontal welding by machine. Hence, one-side welding with strong restriction jig was applied in the previous trials. In the latest trial, JAEA adopted a manual balance welding with a development of manufacturing technology. As the result of A1 Segment Mainbody welding trial, welding deformation of the Outer Plate and the Side Plate could have been controlled closer to the target value. JAEA also tried Attachments welding, in which Pre-Compression Flange (PCF) and Extension are welded to A1 Segment Mainbody, and a Segments welding trial, which is a weld between A1 Segment and a part of A2 Segment. A2 Segment is a 3 m straight part with square channel for coil. The inclination of A1 Segment and A2 Segment due to the welding was 2.7 mm. By applying balance welding, the deformation by Segments welding was suppressed to about 1/3 of the one-side welding.},
 pages = {1592--1597},
 title = {Development of manufacturing technology for ITER TF Coil Structure},
 volume = {109},
 year = {2016}
}