Speakers
Description
The Taishan Antineutrino Observatory (TAO), a satellite experiment of JUNO, is a ton-scale Gd-doped liquid scintillator detector designed to measure the reactor antineutrino spectrum with exceptional energy resolution. Located 9.6 meters underground at the Taishan nuclear power plant, its shallow depth necessitates an efficient veto system to suppress cosmogenic backgrounds. This poster presents the design and performance of TAO's veto system, which comprises a water Cherenkov detector with 3 water tanks surrounding the central detector and a top veto tracker (TVT) with 160 plastic scintillator strips on top of the central detector. Data from physics runs demonstrate the system's effectiveness in muon identification and background rejection—a key requirement for achieving TAO’s scientific goals.