Experimental Comparison of Performances of Ultracold Neutron Gravity Spectrometers

超冷中子重力谱仪性能实验比较

基本信息

批准号：
02044077
负责人：
UTSURO Masahiko
金额：
$ 2.5万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1990
资助国家：
日本
起止时间：
1990 至无数据
项目状态：
已结题

项目摘要

The purpose of the present research is to carry out the experimental comparison of the performances of two ultracold neutron gravity spectrometers, one is now working at the Institut Laue Langevin with the principle of reach focusing of neutrons, and the other is the improved version developed by the group of the present applicant with the principle of the fall focusing of scattered neutrons.As the first step of the present international collaboration for the experimental comparison, the head investigator visited the University of Rhode Island to discuss with Prof. Albert Steyerl who invented and completed the reach focusing gravity spectrometer named NESSIE, and obtained much instructive indications concerning the very high energy resolution, focusing properties of neutrons and several conditions on the scattering samples for the gravity spectrometers of ultracold neutrons. The agreement among us was also derived that our experiment for the comparisons of performances should bec arrie … More d out at the ultracold neutron facility of the Institut Laue Langevin.In the next place, further details of the working conditions of NESSIE were investigated by Mr. T. Ebisawa who visited the Institut Laue Langevin and discussed actively with Dr. W. Drexel, the responsible staff on these ultracold neutron facilities. Several important conclusions and precautions werederived through these investigations concerning especially the scattering sample and related conditions for the experiment using the gravity spectrometer.Further, some preliminary preparations were progressed by Dr. Y. Kawabata who also visited the Institut Laue Langevin and the experimental location for our new gravity spectrometer, named SUPERNESSIE by Dr. Drexel, to carry out performance tests and demonstrations was assigned. The gravity diffractometer which occupying now the location assigned is in the course of the final stage of the experimental research and therefore it will be replaced to our supernessie in near future according to our research program. Less

本研究的目的是对两台超冷中子重力谱仪的性能进行实验比较，一台是目前在劳厄·朗之万研究所工作的，采用中子到达聚焦原理的，另一台是由劳厄·朗之万研究所开发的改进型。作为本次国际合作实验对比的第一步，课题组组长前往罗德岛大学与Albert教授进行座谈Steyerl发明并完成了名为NESSIE的前向聚焦重力谱仪，并在超冷中子重力谱仪的极高能量分辨率、中子聚焦特性以及散射样品的几个条件方面得到了很多指导性的指示，我们也达成了一致。得出我们的性能比较实验应该在劳厄·朗之万研究所的超冷中子设施中进行。 T. Ebisawa先生参观了Laue Langevin研究所，并与这些超冷中子设施的负责人员W. Drexel博士进行了积极讨论，由此得出了一些重要的结论和注意事项。特别是关于使用重力光谱仪进行实验的散射样品和相关条件的研究。此外，Y. Kawabata博士也访问了劳厄研究所，进行了一些初步准备工作朗之万和我们的新型重力光谱仪（Drexel 博士将其命名为 SUPERNESSIE）的实验地点已被指定，用于进行性能测试和演示。目前占据指定位置的重力衍射仪正处于实验研究和最后阶段。因此，根据我们的研究计划，它将在不久的将来被我们的 supernessie 取代。