Takashi Inoue (JAEA) and Masanobu Tanaka (ITER) proudly present a prototype of the ceramic bushing ring for the ITER Neutral Beam Heating System.
A prototype of the five bushing rings that serve as insulators on ITER's Neutral Beam Heating System has been produced at KYOCERA Corporation and passed testing of the metalizing/brazing process at Hitachi Haramachi Electronics Company in Japan. The bushing rings connect the high pressure transmission lines for the 1 Megavolt power supply with the vacuum chamber inside the Neutral Beam System. The rings are made of a special ceramic (alumina) with conductor plates brazed for the electrical connections and measure 1,46 meter in diameter. return to Newsline #82