The stochastic Richardson extrapolation-based numerical error quantification (StREEQ) technique has been applied to accomplish a code verification for the cavity systemgenerated electromagnetic pulse (SGEMP) simulation code LASER-SGEMP. Here, the grid convergence index method estimates the discretization error caused by the finite difference, while the bootstrap sampling demonstrates the sampling error arising from the inherent stochastic noise. The electric field waveforms obtained by the LASER-SGEMP code agree well with the high precision solution from a reference. According to the StREEQ method, the convergence value of the electric field at 1.8 ns is calculated to be 0.955 V/m and the numerical error characterized by the 95% confidence interval is [0.948, 0.964] V/m, while the high precision solution is 0.961 V/m. Therefore, the code verification has supported the accuracy of the LASER-SGEMP code, and the StREEQ technique is proved to be capable of estimating the numerical error of the cavity SGEMP simulation.

中文翻译：

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Cavity SGEMP仿真代码LASER-SGEMP的代码验证

基于随机理查森外推的数值误差量化 (StREEQ) 技术已被应用于完成腔系统生成电磁脉冲 (SGEMP) 仿真代码 LASER-SGEMP 的代码验证。在这里，网格收敛指数方法估计由有限差分引起的离散化误差，而自举采样展示了由固有随机噪声引起的采样误差。LASER-SGEMP 代码获得的电场波形与参考文献的高精度解非常吻合。根据 StREEQ 方法计算得出电场在 1.8 ns 处的收敛值为 0.955 V/m，以 95% 置信区间表征的数值误差为 [0.948, 0.964] V/m，而高精度解为 0.961 伏/米。所以，