ITER dome fabrication processes

Author

Wille, G.W. ; Driemeyer, D.E. ; Chatterton, W.J. ; Foreman, K.D.

Author_Institution

Boeing Co., St. Louis, MO, USA

fYear

1999

fDate

1999

Firstpage

377

Lastpage

380

Abstract

The 3/4-ton International Thermonuclear Experimental Reactor (ITER) divertor dome component is fabricated from three dissimilar metals-stainless steel, copper, and tungsten. It is actively cooled to withstand heat loads of 5 MW/m² during nominal operation, transient beat loads of 15 MW/m², for 1-2 seconds, and volumetric heating of 0.5-5 MW/m³. The divertor dome is comprised of two subcomponents: a 316L cast stainless steel dome shield block with internal coolant passages and a CuCrZr plasma-facing component (PFC) with internal coolant passages and a 15-mm-thick layer of diffusion bonded W-brush armor. This paper describes the processes developed for fabricating the stainless steel dome shield block and CuCrZr plasma-facing component (PFC) and the resulting mechanical properties of the copper and stainless steel joined by the hot-isostatic-pressing assisted diffusion bonding techniques

Keywords

austenitic stainless steel; casting; chromium alloys; copper alloys; fusion reactor divertors; hot pressing; joining processes; tungsten; zirconium alloys; 0.75 ton; 15 mm; 316L cast stainless steel dome shield block; CuCrZr; CuCrZr plasma-facing component; ITER dome fabrication processes; International Thermonuclear Experimental Reactor; W; actively cooled; copper; diffusion bonded W-brush armor; divertor dome component; hot-isostatic-pressing assisted diffusion bonding; internal coolant passages; mechanical properties; stainless steel; tungsten; volumetric heating; Coolants; Copper; Diffusion bonding; Fabrication; Heating; Inductors; Mechanical factors; Plasma properties; Steel; Tungsten;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1999. 18th Symposium on

Conference_Location

Albuquerque, NM

Print_ISBN

0-7803-5829-5

Type

conf

DOI

10.1109/FUSION.1999.849860

Filename

849860