一、 简介
北京正负电子对撞机储存环I区的Wiggler插入件1W1引出了两条同步辐射光束线1W1A和1W1B，这两条光束线位于北京同步辐射装置12号实验厅。漫散射实验站利用1W1A光束线提供的双聚焦单色X射线，开展晶体及薄膜材料的结构研究。该实验站可在专用和兼用两种模式下运行开放。
二、 研究范围
漫散射实验站可以开展晶体材料中的缺陷，薄膜、多层膜的表面／界面，纳米材料结构等研究。
三、 研究方法和发展方向
X射线共面衍射／散射，X射线掠入射衍射／散射，X射线反射率／非镜面散射，X射线掠入射小角散射等。
四、 束线结构
1W1A光束线的主要光学元件包括斜切弯晶单色器和平面压弯反射镜。斜切弯晶单色器距光源19米，实现1W1A束线的单色化及水平聚焦，并达到与1W1B光束线的分束的目的。平面压弯反射镜位于弯晶单色器后1.6米处，用于实现光束的竖直聚焦并有效的抑制高次谐波。
图1 1W1A束线装置图
图2 1W1A束线光路图
五、 样品处光斑参数
能量： 8.05keV
能量分辨率（ΔE/E）： 4.4 × 10-4 (@8.05keV)
光通量（photons/s）：>1x1011 @ 8.05keV
光斑尺寸(H x V）1.0x0.4 mm2
六、实验站主要设备
1、 Huber五圆衍射仪
2、 探测器：NaI点探测器、Mar345、Pilatus100K、EIGER X1M二维探测器等
3、控制与数据获取系统： SPEC
图3 掠入射广角X射线散射(GIWAXS)实验
七、 研究工作和应用成果（参考文献）
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八、 人员队伍与人才培养
在职人员：4人
研究生：2人
九、联系方式
王焕华 研究员 电话：010-88236672 Email：wanghh@ihep.ac.cn
陈 雨 副研究员 电话：010-88235994 Email：chen_yu@ihep.ac.cn
