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Journal Articles

Development and application of large bore ceramic ring for DC 1MV vacuum insulation

Tobari, Hiroyuki; Hanada, Masaya; Matsuyama, Hisayoshi*; Morikawa, Kazufumi*

Seramikkusu, 49(12), p.1050 - 1055, 2014/12

In ITER neutral beam injector, a large bore ceramic ring (1.56 m in outer diameter, 50 mm in thickness) for HV bushing has been required, which acts as an insulating feedthrough from gas-insulated transmission line of 1 MV power supply to beam source in vacuum. However, maximum outer diameter was limited less than 1 m in an early phase of development. Development of manufacturing technology of large bore ceramic ring up to $$phi$$1.56 m was a critical issue for ITER HV bushing. In this paper, R&Ds on large bore ceramic ring; a development of new forming method of such a large ring, optimization of sintering method and verification test of high-voltage holding capability toward ITER HV bushing in JAEA are presented.

Oral presentation

Development of a full size alumina ceramic insulator for the ITER NBI

Watanabe, Kazuhiro; Hanada, Masaya; Omine, Takeshi; Sakamoto, Keishi; Inoue, Takashi; Matsuyama, Hisayoshi*; Nagayama, Toshitake*

no journal, , 

no abstracts in English

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