Lifetime analysis of the ITER first wall under steady-state and off-normal loads

被引:12
|
作者
Mitteau, R. [1 ]
Sugihara, M. [1 ]
Raffray, R. [1 ]
Carpentier-Chouchana, S. [1 ]
Labidi, H. [2 ]
Merola, M. [1 ]
Pitts, R. A. [1 ]
Stangeby, P. [3 ]
机构
[1] ITER Org, F-13115 St Paul Les Durance, France
[2] ZAC St Martin, F-84120 Pertuis, France
[3] Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada
关键词
PLASMA-FACING COMPONENTS; THERMAL RESPONSE; NORMAL EVENTS; TRANSIENTS; RACLETTE; EROSION; MODEL; ARMOR;
D O I
10.1088/0031-8949/2011/T145/014081
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The lifetime of the beryllium armor of the ITER first wall is evaluated for normal and off-normal operation. For the individual events considered, the lifetime spans between 930 and 35 x 10(6) discharges. The discrepancy between low and high estimates is caused by uncertainties about the behavior of the melt layer during off-normal events, variable plasma operation parameters and variability of the sputtering yields. These large uncertainties in beryllium armor loss estimates are a good example of the experimental nature of the ITER project and will not be truly resolved until ITER begins burning plasma operation.
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页数:7
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