The primary objective of the project is to deliver the full conceptual design of a European IFE infrastructure, and this requires performing some dedicated experimental activities. These efforts will sustain and advance the consortium capabilities to supply tailored solutions for the conceptual design, building upon the achievements previously supported by ENR programs on DD. Major European laser laboratories within the consortium (LULI, PHELIX, PALS, and ELI-NP) will provide dedicated beam time, while collaborations with XFEL, ELI Beamlines, and ELI-ALPS will further enhance experimental capacity, also through dedicated access routes. This work package focuses on experimental validation, providing critical support to theoretical models and guiding design choices for the proposed facility.