31 Aug 2022
This deliverable report 15.2 “Image registration procedures” of working package WP15 of NFFA-- Europe|PILOT (NEP) project aims to establish a unified and harmonized GUI platform for correlative experiments utilizing image registration and hierarchical markers for one-to-one and simultaneous microscopic and spectroscopic imaging. With this deliverable, DESY has developed a python-based GUI image registration software for correlative nano-spectroscopy and nano-diffraction that incorporates the nano-object transfer and positioning developed within the previous NFFA-Europe project, and additionally integrates image registration tools for further automatization.31 May 2022
We report on the fabrication of hard X-ray aberration correctors to improve the performance of nanofocusing X-ray lenses by correcting the shape deviations that arise due to fluctuations and anisotropies during the manufacture of X-ray optics. After carefully characterizing the aberrations of the focusing X-ray lens, the tailored profile of a correction phase plate can be inferred. In this deliverable, we have developed the micro and nanofabrication processes for the production of the refractive phase plates by two-photon polymerization based 3D printing. The refractive phase plate is made of polymer, which introduces the required phase shift corrections while hardly introducing any extra absorption. The process parameters have been optimized to obtain the tailored aberration correction profiles. The refractive phase plates have been produced on multiple substrates such as silicon, silicon nitride and diamond membranes and they can be fabricated reliably and on-demand. The methods and procedures to easily align the focusing optics and the refractive phase plate are currently under development.31 Mar 2022
Virtual Access (VA) is a novel service offered in NEP. It comprises innovative online simulation services, databases, machine learning services, data and metadata services, which will be seamlessly integrated into the NEP infrastructure and provided as cloud services to authenticated users. The access will be provided by the facilities hosting the services. Each Access Provider will operate its own infrastructure, made of one or more installations. All involved Access Providers will offer identified User Access to the VA services under their own schemes based on institutional policies. Part of the online data services that will be made available as VA are currently (or will be) developed in the Joint Activity (JA) 6 on FAIR data approach. According to the NEP proposal, seven services are planned, even though scouting activities to enlarge the offer are foreseen. The services are at different stages of development, and will be gradually completed and integrated into the offer. This deliverable presents the first prototype of a VA service: the MetaRepo, a metadata repository to register and validate Metadata Schemas and Metadata Documents. The document is structured as follows: Section 1 describes the MetaRepo service, and Section 2 shows the functionalities of its Graphical User Interface (GUI). Being the purpose of this Section only demonstrative, for the sake of simplicity the functionalities of the MetaRepo GUI are shown on basic examples instead of being applied to a real NEP use case. This choice has been made to prevent the confusion which might arise due to the complexity of the Metadata Schemas. A real usage example is presented in Milestone 10. Section 3 shows how the Authorization and Authentication has been implemented for the MetaRepo. Section 4 explains how the monitoring of user accesses and actions is performed.
