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Instrumentation Workshop – Best Instruments for the Future Neutron Facility HBS

Neutron News 2 Meeting Report Instrumentation Workshop – Best Instruments for the Future Neutron Facility HBS In recent years various projects work on developing powerful accelerator-driven neutron sources based on low energy nuclear reactions using high current proton beams. Such High Current Accelerator-based Neutron Sources (HiCANS) aim to be the next generation neutron user facilities standing out by highly competitive instrument performance, cost-efficiency, and easy access. At the Jülich Centre for Neutron Science (JCNS) of Forschungszentrum Jülich, the project of a High Brilliance neutron Source (HBS) explores the possibilities and technical feasibility of such a novel neutron source in detail. To obtain high brilliance neutron beams the HBS releases neutrons from tantalum targets that are irradiated by pulsed proton beams with an energy of 70 MeV, a peak current of 100 mA and an average power of up to 100 kW. Different target stations receive pulses of different pulse lengths and repetition rates, e.g. 24 and 96 Hz, matched to the requirements of the hosted instruments. The neutron spectrum is shifted to the thermal neutron regime by moderator-reflector assemblies, which yield a brightness of 10 13