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Nuclear Science and Techniques 2024年第1期35卷 18-33页

作者： Xi-Guang Cao Yan-Long Chang Kai Chen emilio ciuffoli Li-Min Duan Dong-Liang Fang Chao-Song Gao Surja K.Ghorui Peng-Chong Hu Qiang Hu Si-Yuan Huang Ze-Yu Huang Lei Lang Yu-Lan Li Zhi-Jie Li Tian-Yu Liang Jun Liu Chen-Gui Lu Fa-Tai Mai Yuan Mei Hao Qiu Xiang-Ming Sun Xiao-Xing Tang Hu-Lin Wang Qian-Ming Wang Le Xiao Mu-Yun Xiao Jian-Yu Xin Nu Xu Peng Yang Yi-Chen Yang Zhen Yang Zong-Yang Yu Dong-Liang Zhang Jun-Wei Zhang Cheng-Xin Zhao Dou Zhu NνDEx-100 collaboration Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Lanzhou University Lanzhou 730000China Central China Normal University Wuhan 430079China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Lawrence Berkeley National Laboratory BerkeleyCA 94720USA North China University of Water Resources and Electric Power Zhengzhou 450045China 不详

Observing nuclear neutrinoless double beta (0vββ) decay would be a revolutionary result in particle physics.Observing such a decay would prove that the neutrinos are their own antiparticles,help to study the absolute mass of neutrinos,explore the origin of their mass,and may explain the matter-antimatter asymmetry in our universe by lepton number violation.We propose developing a time projection chamber (TPC) using high-pressure ^(82)SeF_(6) gas and Topmetal silicon sensors for readout in the China Jinping Underground Laboratory (CJPL) to search for neutrinoless double beta decay of82Se,called the NvDEx experiment.Besides being located at CJPL with the world’s thickest rock shielding,NvDEx combines the advantages of the high Qββ(2.996 MeV) of82Se and the TPC’s ability to distinguish signal and background events using their different topological characteristics.This makes NvDEx unique,with great potential for low-background and high-sensitivity 0 vββsearches.NvDEx-100,a NvDEx experiment phase with 100 kg of SeF_(6)gas,is being built,with plans to complete installation at CJPL by 2025.This report introduces 0 vββ physics,the NvDEx concept and its advantages,and the schematic design of NvDEx-100,its subsystems,and background and sensitivity estimation.

关键词： Neutrinoless double beta decay Time projection chamber ^(82)SeF_(6) China Jinping Underground Laboratory

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1-21 Spallation Isotope Backgrounds at JUNO

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IMP & HIRFL Annual Report 2015年第1期 32-32页

作者： emilio ciuffoli Jarah Evslin 不详

The JUNO experiment[1] is the successor to Daya Bay. It envisages the construction of the world’s largest scintillator detector, which it will use primarily to detect reactor neutrinos, with the goal of determining the neutrino mass hierarchy.The cosmogenic muons, i.e. the muons created by the interaction of cosmic rays in the atmosphere, provide a potentially dangerous background. They can interact with the 12C inside the detector creating, among other things, the isotopes 9Li and 8He; some of their decays can emit a neutron, mimicking the double coincidence used to identify the IBD reactor neutrino signal.

关键词： Spallation Isotope Backgrounds

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基于氘铍反应寻找惰性中微子的新的同位素静止系衰变方案

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IMP & HIRFL Annual Report 2017年第1期 205-207页

作者： Chen Liangwen Cai Hanjie emilio ciuffoli Jarah Evslin Zhang Sheng Chen Xurong Yang Lei 不详

Neutrino oscillations have been observed in solar and atmosphere neutrino experiments[1,2],and confirmed independently by accelerator and reactor neutrino experiments[3-5].However,some anomalies have been observed in neutrino experiments with different sources,detector principles and detection channels[6-13],which can not be accommodated within the standard three-flavour neutrino paradigm.These anomalous results may be a sign of further new physics beyond Standard Model and currently their most popular interpretation is the existence of sterile neutrino states with masses at the eV scale.Sterile neutrino states are a key issue in searches for new physics beyond the Standard Model,and their existence and properties would also have important implications in astrophysics and cosmology.

关键词： independently states principles

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