Prototyping phase of the high heat flux scraper element of Wendelstein 7-X

被引：7
|
作者：
Boscary, J. [1 ]
Greuner, H. [1 ]
Ehrke, G. [3 ]
Boeswirth, B. [1 ]
Wang, Z. [1 ]
Clark, E. [4 ]
Lumsdaine, A. [2 ]
Tretter, J. [1 ]
McGinnis, D. [2 ]
Lore, J.
Ekici, K. [4 ]
机构：
[1] Max Planck Inst Plasma Phys, Garching, Germany
[2] USA Natl Lab, Oak Ridge Natl Lab, Oak Ridge, TN USA
[3] Max Planck Inst Plasma Phys, Greifswald, Germany
[4] Univ Tennessee, Knoxville, TN USA
来源：
FUSION ENGINEERING AND DESIGN | 2016年 / 109卷
基金：
欧盟地平线“2020”;
关键词：
Stellarator; Wendelstein; 7-X; Plasma facing component; Divertor; Monoblock; TARGET ELEMENTS; DESIGN;
D O I：
10.1016/j.fusengdes.2016.02.001
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：
The water-cooled high heat flux scraper element aims to reduce excessive heat loads on the target element ends of the actively cooled divertor of Wendelstein 7-X. Its purpose is to intercept some of the plasma fluxes both upstream and downstream before they reach the divertor surface. The scraper element has 24 identical plasma facing components (PFCs) divided into 6 modules. One module has 4 PFCs hydraulically connected in series by 2 water boxes. A PFC, 247 mm long and 28 mm wide, has 13 monoblocks made of CFC NB31 bonded by hot isostatic pressing onto a CuCrZr cooling tube equipped with a copper twisted tape. 4 full-scale prototypes of PFCs have been successfully tested in the GLADIS facility up to 20 MW/m(2). The difference observed between measured and calculated surface temperatures is probably due to the inhomogeneity of CFC properties. The design of the water box prototypes has been detailed to allow the junction between the cooling pipe of the PFCs and the water boxes by internal orbital welding. The prototypes are presently under fabrication. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：773 / 776
页数：4
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