论文标题
双回体抗神经探测器
The Double Chooz antineutrino detectors
论文作者
论文摘要
本文介绍了双重化合物实验中近距离检测器的设置和性能。在两个相同设计的探测器中测量了CHOOZ核电站的电子抗神经菌素,其平均基线不同,大约400 m和1050 m,与两个反应器核。在多年的数据中,从检测器的相互作用中提取了中微子信号,目的是在中微子振荡的背景下测量基本参数,即混合角θ13。双回合检测器的中心部分是一个主要检测器,其中包含四个充满有机液体的圆柱体积。从内部到外部,都有包含载有Gadolinium的闪烁体的体积,无gadolinium闪光灯,缓冲油和光学分离,是另一个充当否决权系统的液体闪烁体。在此主探测器上方安装了一个额外的外部否决系统,该系统安装了塑料闪烁体条。以双重化合物开发的技术是该领域其他几个抗肿瘤探测器的灵感。检测器设计允许实施有效的背景拒绝技术,包括使用数据采集系统提供的脉冲形状信息。双回合检测器具有显着的稳定性,尤其是检测到的光子,以及检测器成分的高放射性功能。
This article describes the setup and performance of the near and far detectors in the Double Chooz experiment. The electron antineutrinos of the Chooz nuclear power plant were measured in two identically designed detectors with different average baselines of about 400 m and 1050 m from the two reactor cores. Over many years of data taking the neutrino signals were extracted from interactions in the detectors with the goal of measuring a fundamental parameter in the context of neutrino oscillation, the mixing angle θ13. The central part of the Double Chooz detectors was a main detector comprising four cylindrical volumes filled with organic liquids. From the inside towards the outside there were volumes containing gadolinium-loaded scintillator, gadolinium-free scintillator, a buffer oil and, optically separated, another liquid scintillator acting as veto system. Above this main detector an additional outer veto system using plastic scintillator strips was installed. The technologies developed in Double Chooz were inspiration for several other antineutrino detectors in the field. The detector design allowed implementation of efficient background rejection techniques including use of pulse shape information provided by the data acquisition system. The Double Chooz detectors featured remarkable stability, in particular for the detected photons, as well as high radiopurity of the detector components.