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| Home > Publications database > Conceptual Design Report Jülich High Brilliance Neutron Source (HBS) |
| Book | FZJ-2020-03261 |
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2020
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
Jülich
ISBN: 978-3-95806-501-7
Please use a persistent id in citations: http://hdl.handle.net/2128/25874
Abstract: Neutrons are an essential tool for science and industry for probing the structure and dynamics of matter from the mesoscale to the picoscale and from seconds to femtoseconds. In Europe research, industry and society benefit from a globally unique environment of various neutron sources with the flagship facilities ILL in Grenoble, France, and ESS in Lund, Sweden. The latter is currently under construction and will represent the world’s most powerful neutron facility. The unique capabilities of neutrons and the European neutron infrastructure have been highlighted in reports by the European Neutron Scattering Association (ENSA) and the ESFRI Neutron Landscape Group recently. More than 8000 users utilize the available neutron sources in Europe, requesting nearly twice the available capacity offered per year. This high demand for research with neutrons is managed by peer review processes established to permit access to the facilities resulting in a highly competitive situation which sometimes hampers access by well-qualified applicants. The main processes to release neutrons from atomic nuclei are: (i) fission in nuclear reactors, (ii) spallation using high-power proton accelerators, and (iii) nuclear reactions induced by low-energy protons or deuterons. The first two techniques are used very successfully in Europe and offer the highest neutron source strength with versatile options. In view of the continuously high demand for neutron experiments by science and industry and the phasing out of existing reactor-based neutron facilities in Europe in the near future, new solutions and strategies are required to provide sustainable and effective access to neutrons in Europe. New neutron infrastructures have to provide novel capabilities not offered by the present-day facilities based on the ageing suite of research reactors in Europe. Enhanced performance does not necessarily rely on increased source strength, which goes hand-in-hand with cost increase, but can include improved flexibility and accessibility, specialization on particular important societal challenges or optimization on brilliance for small beams. In particular, cost-effective solutions are required to compensate the potential capacity loss and complement high-flux sources such as the new ESS spallation neutron source. The High Brilliance neutron Source (HBS) project will demonstrate the technical and operational concept for a neutron infrastructure based on a low-energy proton accelerator. HBS is designed as a very flexible neutron infrastructure with neutron beams optimized for brilliance. It will host a full suite of highly competitive instruments. Thus HBS will be capable to serve as a national or regional highly attractive neutron research centre. The HBS source will benet of state-of-the-art accelerator technology, combined with unique target-moderator concepts. HBS will mark a change in paradigm for research with neutrons where every individual neutron instrument will have its own neutron source with optimized pulse structure and a moderator adapted to the specific requirements of the instrument. Thus it will provide a unique and attractive option for achieving optimum and efficient brilliance for all neutron experiments at a lower cost compared to present-day large-scale neutron facilities.
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