关键词: 偏滤器, 冷却水管, 流导

Abstract:

The in-vessel components worked very well in the past experiment runs and the main goals were achieved. Nevertheless, some damage was found, such as the ablation happened on graphite tiles, and the penetration happened on the water tubes around V area by the energetic particle bombardment as the power flux deposition was elevated locally. To protect the cooling pipes from damage, the outer graphite plate is extended for 20mm longer than the original one and a special structure using a group of node jacket pipes of 5mm which are made of molybdenum (Mo) material are designed. According to the theoretical and numerical analysis, we find that the effect of extension of the outer target on flow conductance is acceptable and the Mo material is the much more appropriate material and the thickness of 5mm can effectively protect the pipe. The following experimental results show that these adopted protecting measures solve the problems well.

Key words: Divertor, Water cooling tube, Flow conductance