The JANNuS multi-ion beam irradiation platform was established in 2005 around two facilities:

• JANNuS-Orsay, located in Orsay at the Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), created in January 2020 following the fusion of CSNSM with IPNO, IMNC, LAL and LPT. IJCLab is a joint research unit of Centre National de la Recherche Scientifique (CNRS) and Université Paris-Saclay. CNRS is acting through one of his instituts called Institut National de Physique Nucléaire et de Physique des Particules (IN2P3).
• JANNuS-Saclay, located on the CEA Paris-Saclay is part of the Nuclear Materials Department in the low carbon energies division of the Commissariat à l’énergie atomique et aux énergies alternatives (CEA).

Served by a knowledgeable scientific staff, the capabilities combine a total of five electrostatic accelerators for single beam, dual beam and triple beam ion experiments and a transmission electron microscope for in situ studies.

JANNuS is dedicated to researches in the effects of ions in materials. Its particle beams make it possible to irradiate small samples in a perfectly controlled manner, and thus to observe and quantify the evolution of their microstructure (segregation, precipitation, formation of dislocation loops, cavities, bubbles, etc) and service properties. Such a scientific platform has no equivalent in Europe and plays an essential role for multi-scale modelling of radiation effects in materials.

» JANNuS-Orsay in situ dual ion beam TEM
» JANNuS-Saclay triple ion beam

Last paper on the facility: A. Gentils and C. Cabet, Investigating radiation damage in nuclear energy materials using JANNuS multiple ion beams, Nuclear Instrum. and Methods in Physics Research B 447 (2019) 107