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对高通量D-T中子发生器(中子通量高于10~(10)n/s)来说,采用大面积旋转靶,是提高靶对束功率的耗散能力,从而提高靶寿命的一种常用的有效方法。作者设计并试验的一种低速旋转靶(见图)使用靶片的最 大直径为150mm,环形活性区宽度为3cm。转速有60、120转/分两 种。靶座设计中考虑尽可能轻巧(减少感生活性)。靶片一样品间的距 离尽可能短(约5～6mm),以有效地利用中子通量,整个靶座由不锈 钢材料制成,并采用铁饼形的薄壳结构,束管和壳体用氩弧焊连接 成一体,靶片固定于φ20mm不锈钢管制成的旋转轴底部的冷却水 室上(中央冷却面φ70mm)。转轴中央装有进水管,靶片受到径向水 流冷却。
For high-throughput DT neutron generators (neutron flux higher than 10 ~ (10) n / s), the use of large-area rotating targets increases the target’s dissipation of beam power and thus increases the target lifetime A commonly used and effective method. The authors designed and tested a low-speed rotating target (see photo) using a target with a maximum diameter of 150 mm and a ring-shaped active area width of 3 cm. Speed of 60,120 rev / min two. Consider as light as possible in the design of the base (reduce inductive activity). The distance between target samples is as short as possible (about 5 ~ 6mm) to effectively utilize the neutron flux. The entire target base is made of stainless steel and uses a discus-shaped shell structure with a tube and shell TIG welding connected into one, the target fixed to the φ20mm stainless steel tube at the bottom of the rotating shaft cooling water chamber (central cooling surface φ70mm). The center of the shaft is fitted with a water inlet tube and the target is cooled by radial water flow.