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Welcome to the

Institut Laue-Langevin

The world leader in neutron science and technology

English French Deutsch 

The Institut Laue-Langevin is an international research centre based in Grenoble, France.

At the leading edge of neutron science and technology, it operates one of the most intense neutron sources in the world. [more]

ILL general presentation film

The epn science campus



The European Photon and Neutron science campus in Grenoble hosts ILL, ESRF, EMBL and UVHCI.

GIANT innovation campus

ILL is one of the founders of the Grenoble 'GIANT' innovation campus. See more information on

European collaborations

  • ILL is a member of EIROforum, a collaboration between eight European intergovernmental scientific research organisations.
  • ILL coordinates the NMI3 network, the Integrated Infrastructure Initiative for Neutron Scattering and Muon Spectroscopy
  • ILL is a member of CRISP, the Cluster of Research Infrastructures for Synergies in Physics

Neutrons knock at the cosmic door

16 April 2014

See viewpoint in APS physics, Nature top story and our press release here.

2013 annual report now available

 Ask for a Marie-Slodowska-Curie fellowship together with a host scientist in your field of research. Get to know more in Emanuel Schneck's interview below.

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Long shutdown: 9 August 2013 - June 2014

From 9 August 2013 to June 2014, the reactor is shut down. During this period, a number of major projects have been scheduled. Some are part of the modernisation programme; others are the result of the complementary safety assessment performed by the ILL following the accident at Fukushima.

The main operations planned during the shutdown are:

  • The installation of a new instrument (ThALES) and the major upgrade of another four instruments (SuperADAM, D16, D22, IN15)
  • The replacement of two beam tubes (H13 and IH3)
  • The replacement of almost all the H5 guides

Our scientific activity continues however: you will find more details on our press pages, on the scientific library catalogues and on the workshops programme page.

ILL virtual tour

A virtual tour of the ILL is available.

For a real visit to the ILL, and to meet our scientists, please see here.

The ILL modernisation programme (2001-2014)

In order to keep the ILL at the forefront of neutron science and to provide the best possible experimental facilities and support to its European users over the next two decades, the ILL is modernising its infrastructure and instrument suite.

85 M€ are invested to boost instrument efficiency.

The scientific results of the first phase are already impressive: the average detection rate of neutrons for all instruments was improved by a factor of 20!

[More on the modernisation programme here]