16. An improve of performance in MTPC with waveform deconvolution technique

15 Oct 2024, 17:45
4m
Hefei

Hefei

Speaker

Hongkun Chen (Sun Yat-sen University)

Description

The multi-purpose time projection chamber (MTPC), which is designed for measuring neutron nuclear data of varied field, is fabricated at China Spallation Neutron Source (CSNS). Its drift region is flexible, ranging from 70mm to 150mm. Ionization electrons are avalanched and collected via a resistive Micromegas detector with 1521 readout channels. As timing precision plays an important role in particle 3D track reconstruction as well as in time-of-flight method (for measuring neutron energy), we have developed deconvolution technique combined with waveform fitting for software waveform analysis. We have modeled the anode signals which contains energy and space information of detected particles. T0 of signals are obtained by utilizing FFT deconvolution technique. Data from 6Li(n,t)α experiment is used to study the detector's enhanced performance. A simulation of MTPC signals and noises is applied to estimate the timing resolution and timing bias of our software. The result shows that the timing precision of analysis result is significantly improved.

Author

Hongkun Chen (Sun Yat-sen University)

Co-authors

Haizheng Chen (Xi'An Jiaotong University;) Han Yi (Institute of High Energy Physics; Chinese Acadamy of Sciense) Haofan Bai (Peking University) Ruirui Fan (Dongguan Neutron Science Center) Tianzhi Chu (Chinese Academy of Sciences;Shenzhen University;Institute of high energy physics;China Spallation Neutron Source) Wei Jiang (Chinese Academy of Sciences;Institute of high energy physics) Yang Li (Chinese Academy of Sciences;Institute of high energy physics) Yonghao Chen (Institute of high energy physics, Chinese Academy of Sciences) You Lv (Chinese Academy of Sciences;Institute of high energy physics)

Presentation materials