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运用考虑动力效应的Kuteev2-D透镜模型,数值计算了靶丸在国际热核实验堆(ITER)中的消融率,讨论了目前现有的加料工艺的技术困难和可能的解决办法。数值积分结果发现目前已有的靶丸加料技术很难满足堆级等离子体ITER中心加料的要求,计算表明对一个2m长的单级气动枪要加速一个半径0.5cm的靶丸达到速度24.27km/s才能渗透ITER等离子体100cm。用两种典型的消融理论计算了渗透深度与靶丸速度和半径的依赖关系并作了比较。新近的研究从高场侧(HFS)注入靶丸来改善芯部加料效率可能给芯部加料困难贡献一种解决办法,对相关的问题作了讨论。
The Kuteev2-D lens model considering the dynamic effect was used to numerically calculate the ablation rate of the target in the ITER, and the technical difficulties and possible solutions of the current feeding process were discussed. Numerical integration results show that the existing technology of pellet feeding is hard to meet the requirement of ITER center feeding for stack plasma. The calculation shows that for a 2m long single-stage pneumatic gun, a target with a radius of 0.5cm should be accelerated to reach a speed of 24.27km / s to penetrate the ITER plasma 100cm. Two typical ablation theories were used to calculate the dependence of depth of penetration on pellet velocity and radius, and compared. Recent research into how to improve the core loading efficiency by injecting the target pellets from the high field side (HFS) may contribute to a solution to the core dosing difficulties, and the related issues are discussed.