Abstract
The reduced neutron flux and lower average energy characteristic of the Cat-D fusion cycle, compared to D-T, result in reduced first-wall damage. In order to compare first-wall lifetime expectations, neutron-induced damage and also surface erosion due to sputtering are evaluated for recent conceptual tokamak reactor designs employing Cat-D and D-T fuels. While neutron damage appears to limit the D-T first wall to ~7 years lifetime, the Cat-D wall is found to last 20 years or longer. While sputtering erosion is more severe for Cat-D, this does not appear restrictive with use of appropriate first-wall coating techniques.
Original language | English |
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Pages (from-to) | 385-388 |
Number of pages | 4 |
Journal | Journal of Nuclear Materials |
Volume | 108-109 |
Issue number | C |
DOIs | |
State | Published - 1982 |
Externally published | Yes |