WP1 monitored the progress through meetings of the Steering Committee and ensured the contractual implementation of the project. 4 Annual Meetings (Hamburg, Paris, Bologna, Oxford) and an online Final Meeting were organised and each attended by around 120 participants who praised the role of AIDA-2020 as a forum for exchange across projects and collaborations. Activities in WP2 included the website, newsletter and videos on TA facilities.The PoC fund supported 3 projects targeted at applications of AIDA-2020 technologies outside of particle physics e.g. in medicine. Important steps towards commercialisation of results were made in the form of license agreements and the founding of a spin-off company. WP3 delivered software tools, which are being integrated into and routinely used in experiments running today e.g. a new geometry package suitable for vectorised computing. Further developments include packages for alignment corrections and the sophisticated Pandora particle flow algorithms. In WP4 the two main deliverables consisted in complex and highly integrated CMOS readout chips for new instrumentation: a 65nm chip for the pixel detectors developed in WP6 and WP7 for the LHC upgrade and a 130nm chip for gaseous detectors (WP13) and calorimeters (WP14). In WP5, the Trigger-Timing Logic Unit for detector tests in high-energy particle beams was developed and can be used to synchronise detectors which have different timing and triggering structures. Data acquisition and quality monitoring software have undergone significant development. The DAQ system has already been used for detector prototypes for a future Linear Collider and for detectors for the LHC upgrade. The activities of WP6 focused on hybrid detectors and monolithic CMOS devices. The excellent performance of the monolithic prototypes before and after irradiation, and the cost effectiveness of their fabrication cycle, consolidated this approach. Industrialization and system issues, related to detector assembly and deployment,were also addressed. WP7 optimised the sensors for the silicon-based vertexing and tracking systems, using planar and 3D diodes or low gain avalanche detector technologies. The focus moved towards the characterization of hybrid pixel sensors, for which radiation-tolerance were successfully assessed. The activities of WP8 were embedded in the Neutrino Platform at CERN. Key technologies for purity monitoring, photo-detection, very high voltage supply, charge readout, associated cryogenic front-end electronics and DAQ were developed and tested. Many of these developments were integrated and conducted in a large prototype detector recording cosmic ray data in 2017. In WP9, standard miniaturized hydraulic connection technologies were defined to allow for rapid prototyping, extreme minimization, and long-term reliability under high pressure and radiation doses. A state-of-the-art testing facility for boiling flows of CO2 in mini- and micro-channels is ready for exploitation at CERN and precision test stands for ventilation and vibration tests were set up at Oxford. The TA programme was organised in WP10, WP11 and WP12 for test beams, irradiation and characterization facilities. All facilities provided support to users in some cases exceeding the target access units, thus demonstrating the demand from the community. In WP13, tools to produce and characterise resistive plate chambers and micro-pattern gas detectors were developed. Novel architectures and technological tools, in particular in the field of dedicated readout electronics were developed. Environmentally friendly gas mixtures were explored to minimise the global warming impact of these detectors. WP14 developed calorimeter systems based on silicon or scintillator and test infrastructures for advanced optical materials have been commissioned and used. Common beam tests of CMS and CALICE calorimeter prototypes highlight the fruitful exchange between LHC and Liner Collider targeted developments. The demonstration of an assembly chain for silicon-based calorimeter elements was achieved. As part of WP15, a new version of EUDET-type pixel telescope was constructed and installed at CERN, and a high-resolution silicon strip telescope was commissioned at DESY. A new gas system and a new dose monitoring system were installed at CERN GIF++ and the upgrades foreseen for irradiation facilities at CERN, Birmingham and Ljubljana were completed. A new beam line was installed at Frascati and a photon tagging system was prepared. Results from all these activities have not only been documented in Milestone and Deliverable reports, but also found their way into numerous conferences and publications in refereed journals with world-wide audiences, to an extent exceeding by far the original targets of the project.
