# Performance evaluation of the Boron Coated Straws detector with Geant4

## TL;DR

This paper presents a detailed Geant4 simulation study of Boron Coated Straws (BCS) neutron detectors, evaluating their efficiency, activation, and scattering effects for applications in neutron science and security.

## Contribution

It provides the first comprehensive simulation-based performance analysis of BCS detectors, highlighting their suitability for various neutron measurement techniques.

## Key findings

- BCS detectors show promising efficiency for neutron detection.
- Scattering impacts the measured signal significantly.
- Simulation results support BCS use in SANS and imaging applications.

## Abstract

The last decade has witnessed the development of several alternative neutron detector technologies, as a consequence of upcoming neutron sources and upgrades, as well the world-wide shortage of $^3$He. One branch of development is the family of $^{10}$B-based gaseous detectors. This work focuses on the boron coated straws (BCS) by Proportional Technologies Inc., a commercial solution designed for use in homeland security and neutron science. A detailed Geant4 simulation study of the BCS is presented, which investigates various aspects of the detector performance, e.g. efficiency, activation, absorption and the impact of scattering on the measured signal. The suitability of the BCS detector for Small Angle Neutron Scattering (SANS), direct chopper spectrometry and imaging is discussed.