2021/02/16 by Meng-Zhi Wu, Wu, Mengzhi, Qian Liu +16
Engineering · Physics and Astronomy · #CCD and CMOS Imaging Sensors #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Particle Detector Development and Performance #Photocathodes and Microchannel Plates
paper · pdf · doi:10.48550/arxiv.2102.08229
openalex publication_date 2021/02/16 · openalex created_date 2021/03/01 · openalex updated_date 2026/07/28
The IBF and the transparent rate of electrons are two essential indicators of TPC, which affect the energy resolution and counting rate respectively. In this paper, we propose several novel strategies of staggered multi-THGEM to suppress IBF, where the geometry of the first layer THGEM will be optimized to increase the electron transparent rate. By Garfield++ simulation, the electron transparency rate can be more than 90% of single THGEM with a optimized large hole. By simulating these configurations of triple and quadruple THGEM structures, we conclude that the IBF can be reduced to 0.2% level in an optimized configuration denoted as "ACBA". This strategy for staggered THGEM could have potential applications in future TPC projects.