Einstein Telescope Thematic Day

mardi 17 mars 2026, 00:00 → 17:00 Europe/Paris

Bat 141, salle André Berthelot (143) (CEA-Saclay)

This thematic day is dedicated to the Einstein Telescope, the next-generation gravitational-wave observatory in Europe. The program will cover the main science cases, the collaborative framework, and the key technological challenges, including computing, optical design, infrastructure, and cryogenic systems. The event aims to provide a coherent overview of the current status and future roadmap of the project, while fostering discussion and collaboration within the community.

Opening and introduction

Welcome and goals of the thematic day

Overview of the Einstein Telescope

Présidents de session: Angélique Lartaux (IJCLab), Etienne Savalle (CEA/DRF/IRFU/DPhP), Jerome DEGALLAIX (Laboratoire des Matéraux Avancés), M. Patrice Verdier (IP2I Lyon - IN2P3), christian olivetto (cars)

1 Science Cases and Collaborative Framework

Key science drivers (GW astrophysics, fundamental physics, cosmology)

ET collaboration structure and international coordination

Orateur: M. Patrice Verdier (IP2I Lyon - IN2P3)

2 Computing

Data challenges and expected data rates

Computing models and infrastructure needs

Synergies with existing GW computing frameworks

Orateur: M. Patrice Verdier (IP2I Lyon - IN2P3)

12:00 Lunch

3 Optical Design, Configuration, and Infrastructure

Detector configuration and topology

Optical layout and performance targets

Underground infrastructure implications

Orateur: Jerome DEGALLAIX (Laboratoire des Matéraux Avancés)

4 R&D Roadmap

Key technological challenges

Current R&D activities

Milestones toward ET construction

Orateur: Angélique Lartaux (IJCLab)

15:00 Coffee

5 Infrastructure, Cryogenics, Vacuum, and Vibrations

Underground infrastructure requirements

Cryogenic systems

Vacuum systems

Seismic isolation and vibration control

Orateur: M. Christian Olivetto (CNRS/IN2P3)

6 Conclusion

Orateur: Etienne Savalle (CEA/DRF/IRFU/DPhP)