We target a knowledge-based methodological entry to the finding of new generation electrode materials based on perovskites for reversible SOFC/SOEC technologies. The latter are archetypal complex systems: the physico-chemical processes at play involve surface electrochemical reactions, ionic diffusion, charge collection and conduction, which all occur timely within a very limited region. Hence, true in-depth understanding of the key parameters requires characterisation at the right place, at the right time frame and under the proper operating conditions. The price to pay for achieving this multiply-relevant characterisation is the involvement of non-trivial, advanced characterisation techniques. Multi-scale modelling will contribute to turn experimental datasets into a genuine scientific description and make time-saving predictions. In KNOWSKITE-X, the coupling between theoretical and experimental activities is made real by the choice of partners, who are all active in genuinely articulate theory and practice to understand active systems. To provide unifying concepts and to widen the project’s outcomes, intensive collaboration with knowledge discovery using machine-learning and deep learning methods is planned and AI-enabled tools will be used to compensate the smallness of relevant datasets. Such efforts are intended in view of building strong correlations capable of establishing robust composition-structure-activity-performance relations and hence, lead the way to knowledge-based predictions. By doing this, we also target the implementation of simplified testing protocols and tools operable by industrial stakeholders, which results can be augmented thanks to the knowledge-based pivotal correlations implemented during the project. To this end, dedicated efforts will be made in certifying the interoperability and usability of the project’s advances in the form of harmonised documentation and open science sharing.

Understanding the interaction between electromagnetic radiation and matter is crucial for unravelling the internal structure and processes of materials. Electromagnetic waves exhibit both wave-like and particle-like behaviour, with the quantized nature of light becoming apparent in the realm of quantum technologies. The QU-ATTO network aims to merge the fields of quantum optics and quantum information science with attosecond physics. This involves focusing on experimental campaigns to highlight quantum aspects in the interaction of intense laser fields with matter and advancing theoretical descriptions for a comprehensive understanding of the quantum state of light associated with intense laser fields. Traditionally, attosecond pulses have been generated using table-top femtosecond lasers. However, recent experiments performed at free-electron lasers (FELs) have demonstrated the production of isolated attosecond pulses and precise control of attosecond waveforms for pulse trains, leading to remarkable advancements in attosecond science. The network also aims to leverage recent advances in seeded FELs and high-intensity high-harmonic generation (HHG)-based attosecond sources to demonstrate the coherent control of electronic dynamics in systems of increasing complexity. The QU-ATTO network represents a comprehensive effort to advance the understanding and control of the interaction between electromagnetic radiation and matter, with a specific focus on merging quantum optics, quantum information science, attosecond physics, and free-electron laser science. The doctoral candidates (DCs) in the network will receive multifaceted scientific training encompassing experimental and theoretical aspects of quantum information science, strong-field physics, and soft X-ray and X-ray science, as well as extensive training in transferable skills and self-management techniques.

Advanced optical laser light sources and accelerator-based X-ray sources, as well as their technologies, scientific applications, and user communities, have developed independently over more than five decades. Driven by the developments at each optical laser and free-electron laser research infrastructures (RIs) in recent years, the gap between the optical laser and accelerator-driven light sources has diminished significantly. Both communities operate, implement, or plan advanced laser light source RIs, combining high-power optical and high-brightness X-ray light sources operated as dedicated user facilities. Operational and technical problems of these RIs have become very similar, if not identical. In specific cases, joint projects by the two communities have been initiated, but a closer and more structured collaboration of the corresponding communities and light sources is urgently required and shall be developed through this project. The present proposal for a European Cluster of Advanced Laser Light Sources (EUCALL) is the first attempt to create an all-embracing consortium of all (optical and X-ray) advanced laser light source RIs in Europe. Besides addressing the most urgent technical challenges, EUCALL will develop and implement cross-cutting services for photon-oriented ESFRI projects, will optimize the use of advanced laser light sources in Europe by efficient cross-community resource management, will enhance interoperability of the two types of light sources, will ensure global competitiveness, and will stimulate and support common long-term strategies and research policies for the application of laser-like short-wavelength radiation in science and innovation. The EUCALL consortium includes the three ESFRI projects ELI, European XFEL, and ESRF(up), several national RIs, and the LASERLAB-EUROPE and FELs OF EUROPE networks as representatives for the nationally operated optical laser and free-electron laser RIs.