论文标题
MW散布源的模拟快速中子仪器背景
Simulated Fast Neutron Instrument Backgrounds at a MW Spallation Source
论文作者
论文摘要
像每个大型项目一样，瑞典隆德目前正在建设的欧洲剥夺来源（ESS）必须做出许多不可避免的妥协，以保持预算范围内并按计划进行。这些妥协中的一些带来了技术后果，对设施的运营特征和中子散射工具尤其有潜在的影响。为了准备设施的操作，及时考虑仪器背景的主题并避免避免项目设计阶段。使用多个物理模拟估算仪器背景的预期范围以及每个贡献者的相对优势。将这些与其他领先的剥离来源进行了比较。最后，提出了一些建议，以减少每种情况下的背景贡献，如果在设施的调试阶段开始时在实践中被证明是主导的。
Like every megaproject, the European Spallation Source (ESS) currently under construction in Lund, Sweden, has had to make a number of inevitable compromises to remain within budget and on schedule. Some of these compromises carry technical consequences with a potential impact on the operational characteristics of the facility and the neutron scattering instruments in particular. In order to prepare for operation of the facility, it is timely to consider again the subjects of instrument backgrounds and shielding from the project design phase. The expected ranges of instrument backgrounds, and the relative strengths of each contributor, are estimated using multiple physics simulations. These are compared with other leading spallation sources. Finally, several suggestions are given to reduce the background contributions in each case, should they prove to be dominant in practice when the commissioning phase of the facility begins.
