Orateur
Description
A set of platforms is present in the Laboratory of the Physics of the two Infinities Irène Joliot-Curie (IJCLab) at Orsay, offering a large range of techniques with a high level of expertise. They support the scientific axes around the physics of the two infinities and they have a national and international impact in many scientific communities. Radioactive Ion Beams (RIBs) are currently produced in the ALTO (Accélérateur Linéaire et Tandem à Orsay) research platform (alto.ijclab.in2p3.fr). A linear accelerator provides electrons up to 50 MeV 10µA that bombard an uranium carbide target as a driver to produce neutron-rich radioactive beams via the photo-fission process [1]. A 15 MV Tandem accelerator is also in operation at ALTO, it produces a wide range of heavy ion beams, from proton up to gold. ALTO is able to provide high-flux naturally directional neutron beams with the LICORNE neutron converter in inverse kinematics [2]. With the delivery of a broad range stable and radioactive beams, its 10 beam lines and experimental halls equipped with diverse instrumentation, spectrometers and detectors, a wide-ranging research is available at ALTO from the study of the fundamental properties of nuclei, key processes for nuclear astrophysics, interaction of ions with matter to the developments in dosimetry and radiobiology. Several projects carried out at ALTO, such as the laser spectroscopy, ion trapping will be pursued at GANIL in the future low energy experimental hall DESIR. ALTO started a project of reliability and sustainability and physics program of the research platform within the framework of a national strategy. This project has an impact on the fundamental physics program, the equipment upgrades for beam production [3,4], the opening to industry and society. ALTO’s reliability enhancement efforts offer the opportunity to produce low-energy neutron rich nuclei far from the stability region for the low-energy community in France and abroad. Recently, a common strategy for ISOL beam R&D between ALTO and GANIL has begun. The general characteristics of the current developments SPACE ALTO, to increase the added value of ALTO for industrials, and BioALTO, the new experimental platform dedicated to preclinical research in hadron therapy and radiobiology, will be described. A brief description of the ALTO facility, a status of the current development on the RIBs production as well as a selection of the latest experimental results [5,6] and on-going research program will be presented.
[1] S. Essabaa et al., Nucl. Instrum. Methods Phys. Res., Sect. B 317 (2013) 218
[2] M. Lebois et al. Nucl. Instr. Meth. A 735, 145 (2014)
[3] A. Segovia-Miranda et al., Nucl. Instr. Meth. A 1080 (2025) 170785
[4] J. Guillot, B. Roussière et al., Nucl. Instr. Meth. B 559 (2025) 165600
[5] G. Tocabens et al., Phys. Rev. C 111 (2025) 034306
[6] C. Hiver, et al., Acta Phys. Pol. 18 (2025) 2A-25