Talk (non-conference) (Invited)

FZJ-2025-04615

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Monte Carlo Simulation Studies for the High Brilliance Neutron Source (HBS)

Li, J.FZJ*

2025

Abstract: Over the last years, High-Current Accelerator-driven Neutron Sources (HiCANS) have met with increasing interest and represent a promising option for the next generation of neutron sources. The High Brilliance Neutron Source (HBS), developed by the Jülich Centre for Neutron Science at Forschungszentrum Jülich, is a project which aims to provide a high neutron flux source for various scattering, analytical, and imaging applications in science and industry. The HBS design features a linear particle accelerator that generates a pulsed beam with a proton energy of 70 MeV. The target-moderator-reflector unit is equipped with a tantalum target, water as thermal moderator and a lead reflector, resulting in a neutron yield of 1015 s-1. Solid methane and liquid hydrogen are considered as one-dimensional cold moderators.Monte Carlo simulations of particle transport play an important role in the development of the HBS project. It provides valuable insights into the design with aspects such as determination of neutron yield, optimization of moderator-reflector unit, evaluation of shielding to ensure safety and efficiency. In the seminar talk, several simulation examples will be presented to illustrate these aspects.

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. High Brilliance Source (JCNS-HBS)
3. JARA-FIT (JARA-FIT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

Appears in the scientific report 2025

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