学术报告（2019年3月27日 周三 14:30-16:00）

主持人：凌家杰 教授

欢迎广大师生前来参与！

【摘要】

The single-phase liquid argon time projection chamber (LArTPC) provides a large amount of detailed information in the form of fine-grained drifted ionization charge from particle traces. MicroBooNE is a 85 metric tonne single-phase LArTPC and the first detector taking data in the Short Baseline Neutrino (SBN) program, located at Fermilab, which will examine a rich assortment of physics topics, such as searches for a light sterile neutrino and measurements of neutrino-Argon interaction cross sections. Event reconstruction is one of the most challenging tasks in analyzing the data from current and future massive LArTPC experiments, and its performance is critical to achieve physics goals. A novel and generic tomographic event reconstruction paradigm, Wire-Cell, is under development and applied in MicroBooNE data.

This talk will introduce the recent progress on the Wire-Cell tomographic event reconstruction including the 2D signal processing, 3D imaging, and 3D tracking, etc. The current status of the Wire-Cell based Low Energy Excess (LEE) analysis for MicroBooNE which aims at investigating the anomalous LEE of MiniBooNE and possibly sheds light on the searches for a light sterile neutrino will also be presented.

【报告人简介】

Hanwu Wei is a postdoc researcher as a Goldhaber Fellow in Physics Department, Brookhaven National Lab from 2017 until now. His reseach achievements are at MicroBooNE TPCsignal simulation, signal processing, Wire-Cell tomographic event reconstruction with the title“Ionization Electron Signal processing in Single Phase LArTPCs I. Algorithm De-scription and Quantitative Evaluation with MicroBooNE Simulation” and at a newly developed data unfolding method inspired by the MicroBooNE TPC signal processing with the title “Data Unfolding with Wiener-SVD Method”.

He graduated from Department of Engineering Physics, Tsinghua University in 2011 with B.E. in Nuclear Engineering and Technology.In 2017,he got Ph.D. in Experimental Particle Physics also in Tsinghua University.