AI 中文总结
本研究提出用于反应堆CEvNS探测的CMOS图像传感器，结合主动屏蔽与分析模型，不同性能参数下可在7至50天内于反应堆16米处探测到CEvNS，为相关实验提供有前景的技术平台。
AI 中文摘要
本研究提出面向反应堆中微子实验、用于探测相干弹性中微子-原子核散射（CEvNS）的互补金属氧化物半导体（CMOS）图像传感器（CIS）。我们开发了用于降低物理本底的主动屏蔽策略，同时建立了分析模型，描述特定帧率（fps）下暗电流和读出噪声带来的探测器固有本底影响。假设保守本底为100 DRU，采用基于CIS的可行探测器（敏感硅质量约100g、读出噪声为1个电子、帧率200fps），在距3.6吉瓦热反应堆堆芯16米处可在不到50天内探测到CEvNS；若将探测器性能提升至读出噪声0.2个电子、帧率1000fps，探测时间可大幅缩短至约7天。这些结果表明，CIS技术是反应堆监测和精确中微子测量的有前景平台，具有并行非破坏性读出的厚CMOS传感器正成为下一代CEvNS实验的特别有吸引力的候选方案。
英文摘要
In this work we present Complementary Metal-Oxide-Semiconductor (CMOS) Image Sensors (CIS) for reactor neutrino experiments targeting coherent elastic neutrino-nucleus scattering (CEvNS). We have developed an active-shielding strategy for physical background reduction along with an analytical model describing the impact of intrinsic detector backgrounds from dark current and readout noise at a given frame rate (fps). Assuming a conservative background of 100 DRU, and a feasible CIS-based detector with $\sim$100g of sensitive silicon mass, 1$e^-$ of readout noise, and 200fps, it can detect CEvNS in less than 50 days at 16 meters from a 3.6 GW thermal reactor core. Improving the detector performance to 0.2$e^-$ readout noise and 1000fps substantially reduces the detection time to about 7 days. These results establish CIS technology as a promising platform for reactor monitoring and precision neutrino measurements, with thick CMOS sensors featuring parallel and non-destructive readout emerging as particularly attractive candidates for next-generation CEvNS experiments.
