Development of slide support for JT-60U vacuum vessel

Author

Takanabe, K. ; Kaguchi, H. ; Matsumoto, S. ; Murakami, Y. ; Ando, T. ; Horiike, H. ; Neyatani, Y. ; Ninomiya, H. ; Yamamoto, M. ; Matsukawa, M.

Author_Institution

Mitsubishi Heavy Industries Ltd., Kobe, Japan

fYear

1991

fDate

30 Sep-3 Oct 1991

Firstpage

964

Abstract

The JT-60U (JAERI Tokamak-60 upgrade) vacuum vessel is supported at the midplane of the outboard and inboard of the torus by 18 rod supports each. The electromagnetic forces in plasma disruptions cause very severe slide conditions for the support structures, which far exceed the previously experienced endurance limit. In order to overcome this problem, sliding tests of various candidates were conducted, and it was shown that the bronze-base solid lubricant with a composite layer for PTFE-Pb and bronze was applicable. The solid lubricant was imbedded in the bearing base metal to form contact surfaces facing the Inconel 625 support rod

Keywords

Tokamak devices; fusion reactor theory and design; JAERI Tokamak-60 upgrade; JT-60U; bronze-base solid lubricant; electromagnetic forces; plasma disruptions; rod supports; tokamak fusion reactor; vacuum vessel; Coils; Contracts; Electromagnetic analysis; Electromagnetic forces; Electromagnetic heating; Elementary particle vacuum; Heat transfer; Materials testing; Plasma temperature; Springs;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0132-3

Type

conf

DOI

10.1109/FUSION.1991.218787

Filename

218787