Speaker
Description
In modern neutron facilities such as the European Spallation Source (ESS), accurate beam monitoring is critical for ensuring robust diagnostics and data reliability. In this work, a Geant4-based simulation has been developed to support the design and optimization of ESS beam monitors, focusing on MPGDs with a B₄C conversion layer.
The detector’s response was evaluated by modeling energy deposition from neutron products in the drift gap for multiple gas mixtures and geometries. A systematic study of the B₄C layer thickness was performed to evaluate neutron interaction efficiency under monoenergetic and uniform neutron spectra. Additionally spatial resolution was investigated using a simplified strip readout model, giving insight into how various detector parameters affect spatial resolution. Finally, dosimetry studies were performed with a simplified electronics geometry to estimate radiation-induced energy deposition.