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| Hauptseite > Publikationsdatenbank > Monte Carlo simulation of neutron yield measurements for Be, V and Ta targets |
| Hauptseite > Publikationsdatenbank > Monte Carlo simulation of neutron yield measurements for Be, V and Ta targets |
| Conference Presentation (Invited) | FZJ-2020-02359 |
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2020
Abstract: The High Brilliance Neutron Source (HBS) project was initiated at the Jülich Centre for Neutron Science of the Forschungszentrum Jülich (JCNS). It aims to develop a medium neutron source facility based on a linear accelerator, scalable up to 70 MeV proton energy and optimized to deliver high brilliance neutron beams to a variety of neutron instruments. To better understand the neutron yield of different materials at different energies of bombarding protons, measurements to determine the proton-induced neutron production were carried out at the accelerator facility Julic-Cyclotron at Forschungszentrum Jülich. The experiment was set up with different targets (e.g. beryllium, vanadium and tantalum), which were surrounded by a polyethylene moderator. The neutron yield was indirectly determined by measuring the gamma radiation induced by thermal neutron capture in the moderator. The calibration was performed with an Am-Be neutron source to obtain the neutron gamma conversion rate. Corrections were made for escaping neutrons with the parameter of neutron escape ratio, which was calculated from Monte Carlo simulations. The details of the simulations will be introduced at the workshop. The total neutron production compared with measurements, the neutron and gamma escape ratio and the spectrum as well as the neutron flux distribution will also be presented.
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