This paper presents the subtleties of obtaining robust experimental scaling laws for the core resonant error field threshold that leads to field penetration, locked modes, and disruptions. Recent progress in attempts to project this threshold to new machines has focused on advances in the metric used to quantify the dangerous error fields, incorporating the ideal MHD plasma response in a metric referred to as the ‘dominant mode overlap’. However, the scaling of this or any quantity with experimental parameters known to be important for the complicated tearing layer physics requires regressions performed for databases that, for historical reasons, unevenly sample the available parametric space. This paper presents the distribution of the existing international n = 1 database and details biases in the available sampling and details the sensitivity of ITER projections to simple least-squares regressions. Downsampling and a simple kernel density estimation weighted regression...

中文翻译：

---

托卡马克误差场校正公差标度的稳健性

本文介绍了针对核心共振误差场阈值获得鲁棒的实验缩放定律的精妙之处，这些阈值会导致场穿透，锁定模式和破坏。将这个阈值投影到新机器的尝试的最新进展集中在用于量化危险错误字段的度量标准的进展上，将理想的MHD等离子体响应合并到称为“主模式重叠”的度量标准中。但是，使用已知对复杂的撕裂层物理非常重要的实验参数来缩放此数量或任何数量，需要对数据库进行回归，由于历史原因，该数据库会不均匀地采样可用的参数空间。本文介绍了现有国际n = 1数据库的分布，并详细介绍了可用采样中的偏差，并详细说明了ITER投影对简单最小二乘回归的敏感性。下采样和简单的内核密度估计加权回归...