A Computing and Detector Simulation Framework for the HIBEAM/NNBAR Experimental Program at the ESS

Abstract

The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source focusing on searches for baryon number violation via processes in which neutrons convert to antineutrons. This paper outlines the computing and detector simulation framework for the HIBEAM/NNBAR program. The simulation is based on predictions of neutron flux and neutronics together with signal and background generation. A range of diverse simulation packages are incorporated, including Monte Carlo transport codes, neutron ray-tracing simulation packages, and detector simulation software. The common simulation package in which these elements are interfaced together is discussed. Data management plans and triggers are also described.

arXiv commentContribution to CHEP2021. Accepted for publication in the European Physical Journal (EPJ) Web of Conferences

References in corpus (5)

• Monte Carlo Particle Lists: MCPL
• Progress and Simulations for Intranuclear Neutron--Antineutron Transformations in ${}_{18}^{40}Ar$
• A model of antineutron annihilation in experimental searches for neutron-antineutron transformations
• ANNI - A pulsed cold neutron beam facility for particle physics at the ESS
• Neutron--Antineutron Oscillations at the Surface of Nuclei