Very Long-Distance MLL Development and in-situ & in-operando Setups for X-ray Nanodiffraction Analysis of Thin Films and Energy Components

The project focuses on the development of multilayer Laue lenses (MLLs) for ID13. Previous experiments have already shown focal spot sizes down to ~23 nm with diffraction efficiencies up to about 29 %. The main instrumental goal of this LTP is the development of two types of MLL optics, namely (i) “very long-distance” with a focal length of up to ~150 mm, a working distance of >100 mm (@ 12 keV) and an optics aperture of up to ~ 200 µm × 200 µm and (ii) “a new high resolution” lens pair with a focal spot size down to half of the present value, reaching ~10 nm. The MLLs will be used to perform (i) in-situ micromechanical tests on thin films and fibers using a dedicated indenter and (ii) in-operando electro-chemo-mechanical tests on solid state batteries (SSBs). For this purpose, the indenter from MI-1355 will be further developed by implementing new sample mounts, wedge and flat-punch tips and tensile option. Additionally, an adaptable in-operando cell to test SSBs will be designed.

本项目聚焦于面向ID13的多层劳厄透镜（multilayer Laue lenses, MLLs）的研发。此前的实验已实现尺寸低至约23纳米的焦斑，衍射效率最高可达约29%。本次LTP的核心仪器研发目标为两类MLL光学系统的研制：其一为"超长距离"型透镜，其焦距最高可达约150毫米，工作距离大于100毫米（工作能点为12千电子伏特时），光学孔径最高可达约200微米×200微米；其二为"新型高分辨率"透镜对，其焦斑尺寸可降至当前值的一半，达到约10纳米。该MLL将被用于两项实验测试：一是借助专用压痕仪开展薄膜与纤维的原位微力学测试；二是针对固态电池（solid state batteries, SSBs）开展在位电化学力学测试。为此，将对来自MI-1355的压痕仪进行升级改造，新增样品台、楔形压头与平冲头以及拉伸测试选配功能。此外，还将设计一款适配固态电池测试的在位试验舱。