May 24 – 28, 2021
America/Vancouver timezone

Hydrodynamic simulation studies on avalanche and streamer formation in GEM detector

May 25, 2021, 5:00 AM
30m
Poster Sensors: Gaseous Detectors Sensor Posters: Gaseous Detectors

Speakers

Prof. Supratik Mukhopadhyay (Saha Institute Of Nuclear Physics) Mr Prasant Kumar Rout (Saha Institute of Nuclear Physics (IN))

Description

The dynamics of electrons and ions in gaseous ionization detectors have been studied reasonably well with particle simulation models developed using the Garfield++ numerical simulation framework. This is an important area of study since it allows prediction of the detector response in a given experimental situation. In this work, a fluid simulation model has been developed in the COMSOL Multiphysics simulation framework to simulate the avalanche and streamer formation in GEM-based detectors. Possible detector geometries in 2D, 2D axisymmetric and 3D coordinate systems have been explored to find the optimum numerical configuration. Transport of charged fluids has been simulated in the optimized model for various operating voltage ranges suitable for single, double and triple GEM detectors using Ar + CO2 (70:30) as the gas mixture. Simulated gain variations have been compared with experimental observations. Effect of space charge and its relation to streamer formation have been studied.

TIPP2020 abstract resubmission? No, this is an entirely new submission.

Primary author

Mr Prasant Kumar Rout (Saha Institute Of Nuclear Physics)

Co-authors

Mr Jaydeep Datta (Homi Bhaba National Institute) Ms Promita Roy (Saha Institute Of Nuclear Physics) Ms Purba Bhattacharya (Department Of Physics, University of Calcutta) Prof. Supratik Mukhopadhyay (Saha Institute Of Nuclear Physics) Prof. Nayana Majumdar (Saha Institute Of Nuclear Physics) Prof. Sandip Sarkar (Saha Institute Of Nuclear Physics)

Presentation materials