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SOLPS-ITER simulations of the TCV divertor upgrade

机译:TCV Ververtor升级的Solps-Iter模拟

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The effect of the upcoming TCV divertor upgrade on the distribution of neutrals and the onset of detachment is studied using 2D transport code simulations. The divertor upgrade is centered around the installation of a gas baffle to form a divertor chamber of variable closure. SOLPS-ITER simulations predict that the baffle geometry selected to be installed in TCV in 2019 increases the divertor neutral density by a factor similar to 5 and the neutral compression by one order of magnitude in typical TCV single null, Ohmic heated scenarios (330 kW). The compression increases further with the addition of auxiliary heating systems (1.2 MW). Simulations show that volumetric power losses in the divertor increase giving access to deeper detachment for given upstream densities and heating power. Predictions for observations by various TCV diagnostics, including baratrons, divertor spectrometer and visible camera systems, are presented to guide the experimental verification of the efficiency of the divertor baffles.
机译:使用2D运输代码模拟研究了即将到来的TCV Vevertor升级对中性分布和脱离发作的影响。转移器升级围绕安装气体挡板以形成可变闭合的转型室。 Solps-Iter模拟预测2019年选择的挡板几何图中选择的挡板几何形状将置换器中性密度与典型的TCV单空,欧姆加热方案(330 kW)中的一个数量级相似的因子和中性压缩。 。通过添加辅助加热系统(1.2mW),压缩进一步增加。模拟表明,转移器中的容量功率损耗增加,以获得对给定上游密度和加热功率的更深的脱离。通过各种TCV诊断观察的预测,包括Baratrons,Devertor光谱仪和可见摄像机系统,以指导实验验证偏移体挡板的效率。

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