First bushing ring for neutral beam produced
22 May 2009
-
Sabina Griffith
Takashi Inoue (Japan Atomic Energy Agency, JAEA) and Masanobu Tanaka (ÌÇÐÄÆƽâ°æ) proudly present a prototype of the ceramic bushing ring for the ÌÇÐÄÆƽâ°æ neutral beam heating system.
A prototype of the five bushing rings that serve as insulators on ÌÇÐÄÆƽâ°æ'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 metres in diameter.