Latest news related to the instrument

The ILL concluded 2025 operations at the end of October. In total, more than 1800 scientists came on site to perform close to 1400 experiments. The High-Flux Reactor will restart in late March 2026 for a year with 3 operating cycles in the programme.

The Joint Evaluated Fission and Fusion (JEFF) Library combines and makes available the experimental and theoretical knowledge on nuclear data. Release JEFF-4.0 is a significant achievement for the community with major ILL contributions.

Last week, the very first team of users has been performing experiments on the SHARPER instrument at the ILL.

Energy-resolved neutron experiments provide insights into novel energy technologies

Some magnetic materials feature peculiar states the fundamental understanding of which may pave the way for future applications. Neutron experiments have just revealed that they can be unexpectedly stable with respect to microscopic disorder.

In everyday life, we typically encounter water in one of three familiar states – solid, liquid or gas. But there are in fact many more phases, some of which – predicted to exist at high temperature and pressure – are so strange they’re referred to as exotic. State-of-the-art neutron spectrometers and sample environment infrastructures at the Institut Laue-Langevin (ILL) have enabled the first experimental observation of one of these exotic phases – plastic ice VII.