On the morning of the 6th, the Lagarrigue 2023 prize will be awarded to Daniel Fournier, who, at the end of the 1970s, was the first person in Europe to build a liquid argon electromagnetic calorimeter for the CELLO experiment, and then completely renewed the concept to adapt it to the ATLAS experiment with an original accordion geometry. This sub-detector was the key element in the discovery of the Higgs boson in 2012. His other remarkable scientific contribution includes the discovery of direct CP violation with NA31. In all these experiments, Daniel Fournier has played a leading role at international level. His profile is therefore perfectly suited to honouring the memory of André Lagarrigue, with whom he shares a passion for teaching and passing on knowledge.
The afternoon will be devoted to celebrating the 50th anniversary of the discovery of weak neutral currents. These are important observations in support of the theory of the unification of the electromagnetic and weak forces, which is one of the pillars of the current Standard Model of particles and their interactions. This discovery was made at CERN using the Gargamelle bubble chamber, to which physicists, engineers and technicians from the LAL (one of the founding laboratories of IJCLab), LLR and CEA Saclay laboratories made major contributions.
Presentations will be given in French or English, but all slides will be in English.