Japan-UK collaboration on New Neutron Spectrometer

中子散射是在微观尺度上研究凝聚态物质的结构和动力学行为的一种非常强大和独特的科学工具，在物理学、生物学、工程和材料科学等领域都有应用。由日本和英国首创的加速器驱动脉冲中子源是下一代中子源的明确选择。日英中子散射合作是日本高能加速器研究组织（KEK）和英国研究委员会中央实验室委员会（CCLRC）于1996年建立的一项协议的结果，该协议旨在促进日本和英国科学家在脉冲中子散射领域的科学合作和交流。它促成了在ISIS设施建造MAPs光谱仪，并为日本科学家提供了正式进入ISIS科学项目的机会。1997年日英合作的科学成果如下：启动了一维位置敏感探测器库的建设。1997财政年度的建设预算（5600万日元）由文富所提供。在这三年内，完成MAPs的联合建设项目，并将MAPs用于合作科学研究。1997年已安装的ISIS光谱仪的重点工作包括研究量子阶梯系统中的磁激发，二维稀释海森堡反铁磁系统中的分数子激发等。

Neutron scattering is an exquisitely powerful and unique sicentific tool for sutdies of the structure and dynamical behavior of condensed mater on a microscopic scale, in areas ranging from physics to biology to engineering and material science.Accelerator driven pulsed neutron sources, pioneered by Japan and the UK,are the clear choice for the next generation neutron sources. The Japan-UK Collaboration in Neutron Scattering is a consequence of an Agreement between the Japanese High Energy Accelerator Research Organization (KEK) and the UK's Council for the Central Laboratories of Research Councils (CCLRC) established in 1996 to promote scientific collaboration and interchange between Japanese and UK scientists in the field of pulsed neutron scattering. It has resulted in the construction of the MAPs spectrometer at the ISIS Facility and has given formal access to the scientific program at ISIS for Japanese scientists.The scientific achievements of the Japan-UK Collaboration in the Year of 1997 are as follows. Construction of one-dimensional position-sensitive detector bank was started. Budget for the construction was provided by Monbusho in FY1997 (56,000,000 yen). Within these three years, joint construction project of MAPs will be completed and MAPS will be used for collaborative scientific researches.Highlights of the works with already-installed ISIS spectrometers in 1997 include studies of magnetic excitatins in quantum ladder systems, fracton excitations in two-dimensional diluted Heisenberg antiferromagnetic systems etc.