Studies of charging-up effects on Gas Electron Multiplier and methods for its mitigation

• Grant number: 24/01560-4
• Support Opportunities: Scholarships in Brazil - Master
• Start date: April 01, 2024
• End date: March 31, 2026
• Field of knowledge: Physical Sciences and Mathematics - Physics - Nuclear Physics
• Principal Investigator: Tiago Fiorini da Silva
• Grantee: Bruna Beatriz Tizoni Francisco
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 22/03043-1 - Micro-patterned gaseous detectors of radiation and its applications, AP.PNGP.PI

Abstract

Gaseous radiation detectors have consistently played an important role in nuclear physics, with recent advancements exemplified by the incorporation of Time-Projection Chambers (TPCs) in numerous high-energy physics experiments. Notably, the introduction of Gaseous Electron Multipliers (GEMs) has started new technical improvements, resulting in enhanced resolution and more robust statistical data for particle counting and identification. These detectors hold particular significance in high-energy physics investigations, providing good spatial resolution, high counting rates, and enhanced resistance to radiation. The primary focus of this project is to develop computational simulations to study non-linear effects in GEM detectors, specifically considering charge accumulation. The goal is to enhance the comprehension of these devices and contribute to the refinement of large-scale experiments, such as the ALICE TPC upgrade at the LHC. The project also aims the exploration of strategies to mitigate non-linear effects and feasibility studies for implementing such strategies.