Baseline Design of a Low Energy Neutron Source at ESS-Bilbao

F Sordo,F Fernandez-Alonso,S Terrón,M Magán,A Ghiglino,F Martinez,F.J Bermejo,J.M Perlado

doi:10.1016/j.phpro.2014.11.019

F Sordo, F Fernandez-Alonso + Show 6 more

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https://doi.org/10.1016/j.phpro.2014.11.019

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Abstract

This article briefly describes the basic design of the ESS-Bilbao neutron target station as well as its expected neutronic performance. The baseline engineering design, associated ancillary systems, and plant layout for the facility is now complete. A rotating target composed of twenty beryllium plates has been selected as the best choice in terms of both neutron yield and engineering complexity. It will provide neutron beams with a source term of 1015n s−1 resulting from the direct 9 Be(p, xn) reaction using a 75mA proton beam at 50 MeV. The design envisages a target station equipped with two fully optimized moderators capable of withstanding a proton-beam power of 112kW. This design is flexible enough to accommodate future upgrades in final proton energy. The envisaged neutron-beam brightness will enable several applications, including the use of cold and thermal neutrons for condensed matter research as well as fast-neutron irradiation studies. We close by discussing the role that this facility may play once the European Spallation Source becomes operational in Lund, Sweden.

Highlights

The design, construction, and optimization of last-generation neutron facilities such as the Spallation Neutron Source (SNS) at the Oakridge National Laboratory (ORNL, USA) and the Materials and Life Sciences Facility at the Japan-Proton-Accelerator-Complex (MLSF-JARC) has involved the activity of smaller research laboratories and/or research units within established national laboratories
It will provide neutron beams with a source term of 1015 n s−1 resulting from the direct 9Be(p, xn) reaction using a 75 mA proton beam at 50 MeV
We close by discussing the role that this facility may play once the European Spallation Source becomes operational in Lund, Sweden

Summary

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Introduction

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Fast neutrons lines

Beryllium Light Water Heavy Water