The Jules Horowitz Reactor is a European boiling water research reactor. The 100-megawatt materials testing reactor is under construction at Cadarache in southern France, based on the recommendations of the European Roadmap for Research Infrastructures Report, which was published by the European Strategy Forum on Research Infrastructures (ESFRI) in 2006.
The reactor, which is named after the 20th-century French nuclear scientist Jules Horowitz, is expected to begin operation in 2024
Material Test Reactors (MTRs) are necessary for the development and qualification of materials and nuclear fuel used in the nuclear industry. The related studies contribute to the optimisation of existing or coming nuclear power reactors and to the developments of the future reactors.
Most of the irradiation tools utilised by industry are now fairly old in the western world. The sustainability of a high performance experimental capacity and the related expertise for the coming decades are mandatory.
There is a general consensus of the necessity to study and build a new Material Test Reactor (MTR) to support different power reactor existing and future technologies systems.
The Jules Horowitz Reactor (JHR), built on the Cadarache site, will be a major infrastructure of European interest in the fission domain, open to the international collaboration.