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First bushing ring for Neutral Beam produced

-Sabina Griffith

Takashi Inoue (JAEA) and Masanobu Tanaka (ITER) proudly present a prototype of the ceramic bushing ring for the ITER Neutral Beam Heating System. (Click to view larger version...)
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.


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