JUNO Conceptual Design Report
JUNO Conceptual Design Report
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发表时间：
2015-08
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通讯作者：
T. Adam;F. An;G. An;Q. An;N. Anfimov;V. Antonelli;G. Baccolo;M. Baldoncini;E. Baussan;
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作者：
T. Adam;F. An;G. An;Q. An;N. Anfimov;V. Antonelli;G. Baccolo;M. Baldoncini;E. Baussan;
作者：亚当，T；安、F；安，G；安、Q；安菲莫夫，N；安东内利，V；巴科洛，G；巴尔东西尼，M；鲍桑，E；贝拉托，M；别兹鲁科夫，L；比克，D；布莱斯，S；博林，S；布里加蒂，A；布吕吉尔，T；布鲁内拉，R；阿万齐尼，MB；布斯托，J；卡布雷拉，A；蔡H;蔡X;卡米，A；曹，D；曹，G；曹杰;张，J；张，Y；陈，M；陈，P；陈Q；陈S;陈S;陈S;陈X;陈Y;程，Y；基耶萨，D；楚卡诺夫，A；克莱门扎，M；克莱博，B；德安吉洛，D；凯雷特，高清；邓Z;邓Z;丁X；丁Y;尤尔西奇，Z；德米特里耶夫斯基，S；多尔加列娃，M；多尼克，D；多罗什克维奇，E；德拉科斯，M；德雷皮尔，O；杜西尼，S；迪亚兹，马萨诸塞州；恩奎斯特，T；范，D；方，C；方杰;方X；法瓦特，L；费多谢夫，D；佛罗伦萨，G；福特，R；福尔莫佐夫，A；盖格尔，R；甘，H；加尔法尼尼，A；高迪奥，G；根斯特，C；吉亚马奇，M；朱利安尼，F；冈查尔，M；龚，G；龚，H；戈宁，M；戈尔努什金，Y；格拉西，M；格鲁恩，C；格罗莫夫，V；顾，M；关中，瓜里诺，V；郭文 |摘要: 江门地下中微子观测站（JUNO）拟利用地下液体闪烁体探测器确定中微子质量等级。距中国广东阳江核电站和台山核电站53公里。实验大厅跨度50多米，位于覆盖层700多米的花岗岩山下。运行六年内，反应堆反中微子检测可以在3-4$\sigma$的置信水平解析中微子质量等级，并准确确定中微子振荡参数$\sin^2\theta_{12}$、$\Delta m^2_{21}$和$|\Delta m^2_{ee}|$ 优于 1%。 JUNO探测器还可用于研究地球和地外中微子以及标准模型之外的新物理学。中心探测器包含20000吨液体闪烁体和直径35m的丙烯酸球体。 $\sim$17,000 个具有高量子效率的 508 毫米直径 PMT 提供 $\sim$75% 的光学覆盖范围。目前选择的液体闪烁体是：直链烷基苯（LAB）作为溶剂，加上PPO作为闪烁荧光体和波长移动器（Bis-MSB）。每 MeV 检测到的光电子数量大于 1,100 个，能量分辨率预计在 1 MeV 时为 3%。该校准系统旨在部署多个源来覆盖反应堆反中微子的整个能量范围，并实现探测器内部的全体积位置覆盖。否决系统用于μ子检测、μ子诱导背景研究和还原。它由水切伦科夫探测器和顶部跟踪系统组成。读出系统、探测器控制系统和离线系统保证了数据采集和处理的高效稳定。
Author(s): Adam, T; An, F; An, G; An, Q; Anfimov, N; Antonelli, V; Baccolo, G; Baldoncini, M; Baussan, E; Bellato, M; Bezrukov, L; Bick, D; Blyth, S; Boarin, S; Brigatti, A; Brugiere, T; Brugnera, R; Avanzini, MB; Busto, J; Cabrera, A; Cai, H; Cai, X; Cammi, A; Cao, D; Cao, G; Cao, J; Chang, J; Chang, Y; Chen, M; Chen, P; Chen, Q; Chen, S; Chen, S; Chen, S; Chen, X; Chen, Y; Cheng, Y; Chiesa, D; Chukanov, A; Clemenza, M; Clerbaux, B; D'Angelo, D; Kerret, HD; Deng, Z; Deng, Z; Ding, X; Ding, Y; Djurcic, Z; Dmitrievsky, S; Dolgareva, M; Dornic, D; Doroshkevich, E; Dracos, M; Drapier, O; Dusini, S; Diaz, MA; Enqvist, T; Fan, D; Fang, C; Fang, J; Fang, X; Favart, L; Fedoseev, D; Fiorentini, G; Ford, R; Formozov, A; Gaigher, R; Gan, H; Garfagnini, A; Gaudiot, G; Genster, C; Giammarchi, M; Giuliani, F; Gonchar, M; Gong, G; Gong, H; Gonin, M; Gornushkin, Y; Grassi, M; Grewing, C; Gromov, V; Gu, M; Guan, M; Guarino, V; Guo, W | Abstract: The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden. Within six years of running, the detection of reactor antineutrinos can resolve the neutrino mass hierarchy at a confidence level of 3-4$\sigma$, and determine neutrino oscillation parameters $\sin^2\theta_{12}$, $\Delta m^2_{21}$, and $|\Delta m^2_{ee}|$ to an accuracy of better than 1%. The JUNO detector can be also used to study terrestrial and extra-terrestrial neutrinos and new physics beyond the Standard Model. The central detector contains 20,000 tons liquid scintillator with an acrylic sphere of 35 m in diameter. $\sim$17,000 508-mm diameter PMTs with high quantum efficiency provide $\sim$75% optical coverage. The current choice of the liquid scintillator is: linear alkyl benzene (LAB) as the solvent, plus PPO as the scintillation fluor and a wavelength-shifter (Bis-MSB). The number of detected photoelectrons per MeV is larger than 1,100 and the energy resolution is expected to be 3% at 1 MeV. The calibration system is designed to deploy multiple sources to cover the entire energy range of reactor antineutrinos, and to achieve a full-volume position coverage inside the detector. The veto system is used for muon detection, muon induced background study and reduction. It consists of a Water Cherenkov detector and a Top Tracker system. The readout system, the detector control system and the offline system insure efficient and stable data acquisition and processing.