ARCO (Accelerator Research Center in Orsay) was presented within the framework of the Scientific Council of IN2P3 devoted to the physics of accelerators on February 9, 2021. This transversal group concerns all projects and activities around the physics of accelerators and its applications within IJCLab. From a scientific and technological point of view, he will lead accelerator activities across the various structures of the laboratory, and he will be an entry point for these activities with IJCLab's collaborators and external partners. It will soon be implemented and will be the subject of a presentation in Astech.More information on the slides offered at the open meeting of the IN2P3 Scientific Council.