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Problems to be resolved before coming to ILL

The ILL is dedicated to helping its visiting researchers to make the most of its facilities. Neutron beams and instrument access are provided free of charge for proposers of accepted experiments.

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Long-Term Visitors

User Club

The ILL User Club provides online access to all the information and administrative tools for our scientific visitors, presented in a user friendly environment.

Problems to be resolved before coming to ILL

Social Welfare

The most common problems encountered by LTVs coming to ILL are related to social welfare, which cannot always be transferred between European countries. These particularly concern non-French staff and their families and companions and are best explained by example.

• A CRG whose main employer is based in Germany employed an Italian scientist to work in at ILL France. The Italian scientist had never actually worked in Germany, and was refused German social welfare to work in France. Unable to find a solution and faced with mounting health costs, the employee left his post and engaged legal proceedings.

• A British organisation recruited a non-European scientist in the UK who had enjoyed full social welfare there for himself and his family. This British welfare can be transferred to another EC country for EC nationals, but is not valid for non-EC nationals. The scientist and his family came to France without being aware that their welfare status was lost.

These welfare problems can be overcome by registering the company as employing staff to work in France. Information can be found here.

One should note however that the employee’s social contributions in France are much higher than in the UK, and that temporary employment contracts in France cannot currently exceed 18 months, whereas many such contracts with non-French CRGs or EFIs are for periods of up to 3 years.

You may find also the Kastler Foundation website useful.


You may find it helpful to contact L'Espace Information / Accueil chercheurs on the campus as they provide a variety of free services and information.