A novel method to measure the dE/dx resolution of a TPC prototype using 266 nm UV laser
Instrumentation and Detectors
2021-04-09 v1 High Energy Physics - Experiment
Abstract
The specific energy loss (dE/dx) resolution is critical for particle identification and separation in TPC. In connection with the R&D for the TPC at the Circular Electron Positron Collider (CEPC), we find the laser ionisation obeys the Gaussian distribution theoretically and experimentally. Based on this, we develop a novel method using a 266 nm UV laser to measure the dE/dx resolution. Comparing to the traditional methods with particle beams or cosmic rays, the novel method with 266 nm UV laser is more convenient and flexible. We verify the method's feasibility with a TPC prototype and extrapolate the dE/dx resolution to the CEPC TPC. The estimation of the dE/dx resolution is without the magnetic field.
Cite
@article{arxiv.2104.03817,
title = {A novel method to measure the dE/dx resolution of a TPC prototype using 266 nm UV laser},
author = {Yiming Cai and Yulan Li and Huirong Qi and Yuanjing Li and Jian Yang and Zhiyang Yuan and Yue Chang},
journal= {arXiv preprint arXiv:2104.03817},
year = {2021}
}
Comments
8 pages, and 4 figures