@misc{oai:repo.qst.go.jp:00072259,
 author = {戸張, 博之 and 柏木, 美恵子 and 渡邊, 和弘 and 前島, 哲也 and 小島, 有志 and 梅田, 尚孝 and 大楽, 正幸 and 小田, 勇樹 and 山中, 晴彦 and 戸張 博之 and 柏木 美恵子 and 渡邊 和弘 and 前島 哲也 and 小島 有志 and 梅田 尚孝 and 大楽 正幸 and 小田 勇樹 and 山中 晴彦},
 month = {Sep},
 note = {Toward the 1 MV power supply system for the ITER neutral beam injector consisting of various components with oil insulation, gas insulation and vacuum insulation, design and manufacturing of dc ultra-high-voltage component has been progressed. Thermal design of long transmission line up to 100 m was established. In order to design the high-temperature water channel for the plasma grid at 1 MV potential, the resistivity of high-purity water at 180 oC was measured for the first time. With the obtained resistivity, realistic high-temperature water circulating system was designed. A high-voltage bushing to transmit multiple voltages simultaneously has been also developed through a careful experimental study on vacuum insulation characteristics with multi-gaps coaxial electrodes. With the empirical scaling the electrostatic screen was designed taking into account effect of multi-gap and expected deformation such as thermal elongation during operation. After the assembly, stable voltage holding of 240 kV at each stage was confirmed in the manufactured HV bushing., 29th Symposium on Fusion Technology},
 title = {Progress on design and manufacturing of dc ultra-high voltage component for ITER NBI},
 year = {2016}
}