A novel method to measure the dE/dx resolution of a TPC prototype using 266 nm UV laser

Autor:	Cai, Yiming, Li, Yulan, Qi, Huirong, Li, Yuanjing, Yang, Jian, Yuan, Zhiyang, Chang, Yue
Rok vydání:	2021
Předmět:	Physics - Instrumentation and Detectors High Energy Physics - Experiment
Druh dokumentu:	Working Paper
Popis:	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. Comment: 8 pages, and 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2104.03817 Zobrazit plný text záznamu View this record from Arxiv