The energetic particle slowing down model in the BEAMS3D stellarator neutral beam code is compared to analytic models and experimental data from the Wendelstein 7-X experiment (W7-X). Recently, the first neutral beam experiments were performed in W7-X, providing validation of neutral beam deposition codes (Lazerson S.A. etal 2020 Nucl. Fusion 60 076020). This work builds upon that work, and follows the gyro-center orbits of the neutral-beam-generated fast ions to the plasma boundary. Slowing down times based on measurements of diamagnetic energy changes are compared to simulation data. A discharge solely heated by neutral beam injection is used to compare neoclassical heat flux estimates to neutral beam fueling, heating, and current drive. Experimental estimates of electron heat diffusivity suggest that electron turbulence is destabilized by density peaking in the discharge. Neutral beam current drive dominates over bootstrap current, resulting in a reversal of the toroidal current, as seen experimentally. Particle losses and heat flux through the equilibrium boundary are described. The effects of the magnetic configuration and plasma density on such parameters are also assessed. Benchmarking based on analytic estimates and other energetic particle codes is presented.

BEAMS3D 仿星器中性束代码中的高能粒子减速模型与来自 Wendelstein 7-X 实验 (W7-X) 的分析模型和实验数据进行了比较。最近，在 W7-X 中进行了第一次中性束实验，提供了中性束沉积代码的验证（Lazerson SA et al 2020 Nucl. Fusion 60076020）。这项工作建立在这项工作的基础上，并遵循中性束产生的快离子的陀螺中心轨道到达等离子体边界。将基于抗磁能量变化测量的减速时间与模拟数据进行比较。仅由中性束喷射加热的放电用于将新古典热通量估计与中性束燃料、加热和电流驱动进行比较。电子热扩散率的实验估计表明，放电中的密度峰值会使电子湍流不稳定。如实验所示，中性束电流驱动控制自举电流，导致环形电流的反转。描述了通过平衡边界的粒子损失和热通量。还评估了磁性配置和等离子体密度对这些参数的影响。