Title :
ARIES-III divertor engineering design
Author :
The ARIES Design Team
fDate :
30 Sep-3 Oct 1991
Abstract :
The authors report the engineering design of the ARIES-III double-null divertor. The divertor coolant tubes are made from W-3Re alloy and cooled by subcooled flow boiling of organic coolant. A coating of 4 mm thick tungsten is plasma sprayed onto the divertor surface. This W layer can withstand the thermal deposition of a few disruptions. At a maximum surface heat flux of 5.4 MW/m2, a conventional divertor design can be used. The divertor surface is contoured to have a constant heat flux of 5.4 MW/m2. The net erosion of the W-surface was found to be negligible: about 0.1 mm/year. After three years of operation, the W-3Re alloy ARIES-III divertor can be disposed of as Class A waste. In order to control the prompt dose release at site boundary to less than 200 Rem, isotopic tailoring of the W-alloy will be needed
Keywords :
dosimetry; fusion reactor materials; fusion reactor theory and design; radioactive waste; ARIES-III divertor engineering design; Class A waste; W layer; W-3Re alloy; W-alloy; constant heat flux; coolant tubes; double-null divertor; isotopic tailoring; maximum surface heat flux; net erosion; organic coolant; plasma sprayed; prompt dose release; site boundary; subcooled flow boiling; thermal deposition; Coatings; Coolants; Design engineering; Inductors; Laboratories; Physics; Plasma materials processing; Plasma temperature; Plasma transport processes; Thermal spraying;
Conference_Titel :
Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0132-3
DOI :
10.1109/FUSION.1991.218883
