Enhancing the DEMO divertor target by interlayer engineering

被引：28
|
作者：
Barrett, T. R. [1 ]
McIntosh, S. C. [1 ]
Fursdon, M. [1 ]
Hancock, D. [1 ]
Timmis, W. [1 ]
Coleman, M. [1 ]
Rieth, M. [2 ]
Reiser, J. [2 ]
机构：
[1] CCFE, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[2] Karlsruhe Inst Technol, IMF I, D-76021 Karlsruhe, Germany
来源：
FUSION ENGINEERING AND DESIGN | 2015年 / 98-99卷
关键词：
DEMO; Divertor target; Interlayer; Design optimisation;
D O I：
10.1016/j.fusengdes.2015.03.031
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A robust water-cooled divertor target plate solution for DEMO has to date remained elusive. Common to all contemporary concepts is an interlayer at the boundary between the tungsten armour and the cooling structure. In this paper we show by design optimisation that an effectively designed interlayer can produce dramatic gains in power handling. By engineering the interlayer as part of the design study, it is found that divertor performance is enhanced by either a low conductivity 'Thermal Break' interlayer or an 'Ultra-Compliant' interlayer. For a 10 MW/m(2) surface heat flux we find that a thermal conductivity of 15 W/mK and elastic modulus of I GPa are effective. A design is proposed which passes linear-elastic code rules up to an applied heat flux of 18 MW/m(2). (C) 2015 EURATOM/CCFE Fusion Association. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1216 / 1220
页数：5
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