Noelia Feijóo, Luzma Montoya, Nicolás Rodríguez, Yolanda Martín, Sergio Bonaque, Jose Manuel González, Haresh Chulani, Francisco González, Jorge Quintero, Miguel Núñez, Ángela Hernández

The European Solar Telescope (EST) is a 4.2-m telescope which has been redesigned with a fully integrated Multi-Conjugate Adaptive Optics (MCAO) into the optical path right after the EST primary mirror. The current baseline configuration considers four altitude Deformable Mirrors (DM) conjugated to 5, 9, 12 and 20 km above the telescope entrance pupil and an Adaptive Secondary Mirror (ASM) conjugated to the entrance pupil. The wavefront sensing will be performed by a set of correlation-based Shack Hartmann wavefront sensors (WFS). In order to validate the MCAO concept an optical bench demonstrator has been designed. It is currently working in Single Conjugated AO and Ground Layer AO and later it will evolve into the MCAO proposed for EST.