Current Status and Prospects of JUNO experiment

BEI-ZHEN HU^1*, Yee Bob Hsiung¹, Guey-Lin Lin², Chung-Hsiang Wang³

¹Physics Department, National Taiwan University, Taipei, Taiwan
²Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
³Department of Electro Optical Engineering, National United University, Miaoli, Taiwan

* Presenter:BEI-ZHEN HU, email:ptbei1985@gmail.com

The Jiangmen Underground Neutrino Observatory(JUNO) is located in Jiangmen, Guangdong, China, with an overburden of about 700 meters, and is expected to be completed in 2023.
The primary goal of the JUNO experiment is to determine the neutrino mass hierarchy by measuring the fine structure of the oscillation spectrum with a significance of 3~4 σ at the 53 km baseline of the two power plants, and to precisely measure the mixing parameters, θ₁₂, Δm₁₂ and Δm²_{ee}. An unprecedentedly high energy resolution of 3% at 1 MeV is required for this purpose.
To achieve this goal, the high transparency liquid scintillator (LS) and low backgrounds are needed. The central detector will contain a 35.4 m diameter acrylic sphere filled with 20-kt of LAB-based scintillator, submerged in a water pool to shield it from environmental radioactivity. An independent double calorimetry system consisting of 17612 20-inch large PMTs (LPMTs) and 25600 3-inch small photomultiplier tubes (SPMTs) will provide total photo coverage of 78%.
The experiment will also look for geo-neutrinos, solar-neutrinos, atmospheric neutrinos, and supernova neutrinos. This talk will cover the JUNO detector, its current status, and the future prospect of precision measurement on the neutrino oscillation.

Keywords: Neutrino oscillation , Neutrino mass hierarchy, Neutrino detector, Neutrino oscillation parameters