The ILL high-flux reactor
Neutrons at the ILL are delivered by its reactor. The ILL High-Flux Reactor generally operates four 50-day period ("cycle") per year, providing 200 days for science. It is also possible to operate cycles of 60 days in length at lower power, without compromising its world-class performances.
Refurbished between 1993 and 1995, the reactor produces the most intense continuous neutron flux in the world in the moderator region: 1.5x1015 neutrons per second per cm2, with a thermal power of 58.3 MW.
Cycles are followed by a shutdown to change the fuel element. One longer shutdown is planned every year to enable maintenance work to be carried out.
Safety and environment information:
Nuclear transparency and safety: annual report (in French)