Speaker
Description
The Taishan Antineutrino Observatory (TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO) to precisely measure the reactor neutrino spectrum with sub-percent energy resolution at 1 MeV. The TAO detector is a 2.8-ton Gd-doped liquid scintillator (LS) detector and the LS is contained in a spherical acrylic vessel and viewed by $\sim 10\ \rm m^2$ inward-facing SiPMs corresponding to a coverage of 94%. We use an inhomogeneous Poisson process and Tweedie generalized linear model (GLM) to describe the SiPM response. We develop a pure probabilistic method using the time and charge of SiPMs from first principles to reconstruct point-like events in the TAO detector. After validation with the TAO simulation data, the performance of our model is found to be quite promising, showing a vertex position resolution better than 16 mm and an energy resolution of about 2% at 1 MeV. Our methodology is also applicable to other experiments that utilize PMTs for time and charge readouts.
| Poster prize | Yes |
|---|---|
| Given name | Xuewei |
| Surname | Liu |
| First affiliation | Tsinghua University |
| Institutional email | liuxw20@mails.tsinghua.edu.cn |
| Gender | Male |
| Collaboration (if any) | JUNO Collaboration |
