Hybrid pixel detector upgrade for electron energy loss spectrometer

这项提案要求为安装在SuperSTEM3上的电子能量损失光谱仪(EELS)直接或混合像素探测器升级提供资金，SuperSTEM3是一种UltraSTEM100 MC单色电子显微镜，是EPSRC国家研究设施(NRF)高级电子显微镜(EM)仪器套件的一部分。SuperSTEM是一家国际知名的用户设施，提供世界领先的仪器和专业知识，使原子结构的直接成像以及元素组成的确定以及化学和成键分析，精确度达到单原子。该设施支持阐明先进材料和设备中的结构-性质关系，以造福于科学用户社区，这些领域来自凝聚态物理、催化、生物材料研究、化学、矿物学和核材料研究等多个领域。该设施职权范围的一个重要部分是让人们及早获得新技术或新兴技术，以便向科学界证明这些技术的益处和重要性。这项EPSRC核心设备资本奖将使第一批针对电子能量损失谱(EELS)进行优化的直接电子探测器能够在该设施的仪器运行的低一次束流加速电压(低千伏-40-100千伏)下实现。这项探测技术使低温电磁成像领域发生了革命性的变化，为2017年诺贝尔化学奖的颁发做出了贡献，预计它将在光谱学领域产生类似的影响，特别是在需要最高灵敏度的应用中。该设备将帮助支持超过120名活跃用户的整个设施用户群，包括许多在该设施进行项目的早期职业研究人员和博士生，它还将吸引渴望利用光谱学中快速信号采集和单电子计数能力的扩大研究基础的兴趣。

This proposal requests funding for a direct or hybrid pixel detector upgrade for the electron energy loss spectrometer (EELS) equipped on SuperSTEM3, an UltraSTEM100 MC monochromated electron microscope that is part of the instrumentation suite at SuperSTEM, the EPSRC National Research Facility (NRF) for Advanced Electron Microscopy (EM). SuperSTEM is an internationally-renowned user facility that offers access to world-leading instrumentation and expertise enabling the direct imaging of atomic structures as well as the determination of elemental composition, along with chemical and bonding analysis, down to single atom precision . The facility supports the elucidation of structure-property relationships in advanced materials and devices for the benefit of the scientific user community, stemming from fields as diverse as condensed matter physics, catalysis, bio-materials research, chemistry, mineralogy, and nuclear materials research, amongst many others. An essential part of the facility's remit is to offer early access to new or emerging technologies with a view to demonstrate their benefit and importance to the scientific community. This EPSRC Capital Award for Core Equipment will enable the implementation of the first direct electron detectors optimised for electron energy loss spectroscopy (EELS) at the low primary beam acceleration voltage (low kV - 40-100kV) at which the facility's instruments operate. This detection technology revolutionised imaging in the field of cryo-EM, contributing to the award of the 2017 Nobel Prize for Chemistry, and it is expected it will have a similar impact in spectroscopy, especially in applications that require the utmost sensitivity. The equipment will help support the entire facility user base of over 120 active users, including numerous early career researchers and doctoral students with on-going projects at the facility, and it will also attract interest from a broadened research base keen to take advantage of fast signal acquisition and single electron counting capabilities in spectroscopy.