Sterile neutrinos are a minimal extension of the standard model of particle physics. A promising model-independent way to search for sterile neutrinos is via high-precision β-spectroscopy. The Karlsruhe tritium neutrino (KATRIN) experiment, equipped with a novel multi-pixel silicon drift detector focal plane array and read-out system, named the TRISTAN detector, has the potential to supersede the sensitivity of previous laboratory-based searches. In this work we present the characterization of the first silicon drift detector prototypes with electrons and we investigate the impact of uncertainties of the detector’s response to electrons on the final sterile neutrino sensitivity.

无菌中微子是粒子物理学标准模型的最小扩展。搜索惰性中微子有前途的模型无关的方法是通过高精密β -spectroscopy。卡尔斯鲁厄中微子（KATRIN）实验配备了新型的多像素硅漂移探测器焦平面阵列和读出系统（称为TRISTAN探测器），有可能取代以前基于实验室的搜索的灵敏度。在这项工作中，我们介绍了第一个带电子的硅漂移检测器原型的特性，并研究了检测器对电子响应的不确定性对最终无菌中微子灵敏度的影响。