MICROXAS IMAGING SYSTEM FOR BL 6-2

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 XRadia公司的商用Kirkpatrick-Baez(KB)镜系统是在BL6-2上以虚拟源配置进一步开发的。XAS成像的亚微米聚焦是使用两个垂直和水平聚焦的交叉几何形状的Rh涂层可调KB镜来实现的，每个镜都有一个独立的弯曲机构来设置所需的表面形状。光学元件被封闭在氦气气氛中，减少吸收和散射。安装在第一个垂直聚焦KB镜下游的高精度狭缝孔允许设置光学元件的截获光束大小，并允许通过探测镜面的不同区域和位置来用聚焦的光通量来换取光斑大小。光束大小从2 x 2到15 x 15(角x垂直微米^2)。今年的开发重点是软件和与中小企业协作用户的实验，以提供反馈并指导开发。还对样品冷却方法进行了初步工作。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. A commercial Kirkpatrick-Baez (KB) mirror system from Xradia Inc. was further developed on BL6-2 in a virtual source configuration. Sub-micrometer focusing for XAS imaging is obtained using two Rh coated adjustable KB mirrors in a crossed geometry for vertical and horizontal focusing, each with a self-contained bending mechanism to set the desired surface figure. The optics is enclosed in a He atmosphere, reducing absorption and scatter. A high precision slit aperture mounted downstream of the first vertically focusing KB mirror enables setting the intercepted beam size of the optics, and allows trading focused flux for spot size by probing different areas and locations of the mirror surface. Beam sizes range from 2 x 2 to 15 x 15 (horz x vert micrometer^2). Developments this year focused on software and experimentation with collaborative SMB users to provide feedback and direct the developments. Initial work was also done towards approaches of sample cooling.