Upgrading of a Neutron Diffractometer at Los Alamos Neutron Science Center for Materials Research and Education

洛斯阿拉莫斯中子科学材料研究和教育中心的中子衍射仪升级

• 批准号: 0076488
• 负责人: Takeshi Egami
• 金额: $ 40万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0076488&HistoricalAwards=false
• 关键词: Upgrading; Neutron; Diffractometer; Los; Alamos

This instrument development award from the Instrumentation for Materials Pesearch program allows the to the university of Pennsylvania to upgrade the Neutron Powder Diffractometer (NPD) at the Los Alamos Neutron Science Center (LANSCE) to a world-class high-resolution diffractometer for materials research and education. With this upgrade the beamline will have a unique capability for simultaneous high-Q (momentum transfer) crystallographic analysis as well as the real-space atomic pair-density function (PDF) analysis. The data acquisition rate at high angles will increase by a factor of five by adding a large backscattering detector module, upgrade computers and install a beam-chopper. The upgrading of NPD will have wide-ranging educational impact. This fivefold increasing in the data collection rate will create more research opportunities for graduate students from five different institutions. Graduate students will also participate in the calibration task and development of software, and thus acquire precious experience of setting up a large instrument at a national facility. This project will significantly contribute to increasing the university users. ***The power of pulsed neutron powder diffraction method in materials research is widely recognized. It is capable of determining the atomic structure of complex materials with high accuracy, thus providing basic information vital to materials science and technology. This award will allow the University of Pennsylvania to carry a very cost-effective upgrade of the Neutron Powder Diffractometer (NPD) at the Los Alamos Neutron Science Center (LANSCE) to a world-class high-resolution diffractometer for materials research and education. This will allow a dramatic improvement of the data collection rate, by a factor of five. Upgrading this beamline will have significant impact on graduate education and training at five different institutions. This will help contribute to overcome a critical shortage of trained scientists in neutron scattering in the US. The IMR award is significantly leveraged using funds from LANSCE.%%%

该仪器开发奖项从材料仪器搜索计划允许宾夕法尼亚大学升级Los Alamos中子科学中心（LANSCE）的中子粉末衍射仪（NPD）到世界一流的材料研究和教育的世界一流的高分辨率衍射仪。通过此升级，光束线将具有同时高Q（动量转移）晶体学分析以及真实空间原子配对密度函数（PDF）分析的独特功能。通过添加大型反向散射检测器模块，升级计算机并安装横梁chopper，以高角度的数据采集率将增加5倍。 NPD的升级将产生广泛的教育影响。数据收集率的五倍增加将为来自五个不同机构的研究生创造更多的研究机会。研究生还将参与软件的校准任务和开发，从而获得在国家设施中建立大型乐器的宝贵经验。 该项目将极大地有助于增加大学用户。 ***广泛认识到材料研究中脉冲中子粉末衍射法的功能。它能够以高精度确定复杂材料的原子结构，从而为材料科学和技术至关重要。该奖项将使宾夕法尼亚大学能够对Los Alamos中子科学中心（LANSCE）的中子粉末衍射仪（NPD）进行非常有效的升级，以实现用于材料研究和教育的世界一流的高分辨率衍射仪。这将使数据收集率显着提高，倍数为5倍。升级此梁线将对五个不同机构的研究生教育和培训产生重大影响。这将有助于克服美国中子散射中受过训练的科学家的严重短缺。使用Lansce的资金。