Instrumentation Workshop – Best Instruments for the Future Neutron Facility HBS

Q4 Physics and Astronomy Neutron News Pub Date : 2022-08-25 DOI:10.1080/10448632.2022.2108664

T. Gutberlet, J. Voigt

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Abstract

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

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仪器研讨会——未来HBS中子设施的最佳仪器

中子新闻2会议报告仪器研讨会-未来中子设施的最佳仪器HBS近年来，各种项目都在开发基于使用高电流质子束的低能核反应的强大加速器驱动中子源。这种基于高电流加速器的中子源(HiCANS)旨在成为下一代中子用户设施，具有高度竞争力的仪器性能，成本效益和易于访问。在Forschungszentrum j lich中子科学中心(JCNS)，高亮度中子源(HBS)项目详细探索了这种新型中子源的可能性和技术可行性。为了获得高亮度的中子束，HBS从钽靶中释放中子，这些靶被脉冲质子束照射，脉冲质子束的能量为70兆电子伏，峰值电流为100毫安，平均功率高达100千瓦。不同的目标站接收不同脉冲长度和重复频率的脉冲，例如24和96赫兹，与承载仪器的要求相匹配。中子光谱通过减速-反射器组件转移到热中子区，产生10 - 13的亮度

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