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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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Applying for beamtime

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.

Proposal writing hints

The context

Give a brief statement of the background and the general importance of the research and what is the wider relevance of your work.
How you research programme is supported (PhD, grants, links with industry, ..

The experiment

Give a clear account of the aims of the proposed experiment and a detailed description of the experiment. Bear in mind that not all of the subcommittee members are experts in the field.
State why the ILL is necessary for your experiment, especially with regard to the need of neutrons in particular – what unique information they can give that you can’t get elsewhere.

Previous results
Give results of preliminary work carried out, e.g. NMR, x-rays, light scattering, etc... and the connection with your proposed experiment.
Results of any modelling or simulations you have performed.
Summarize previous results from neutron experiments (at the ILL or elsewhere) and/or refer to an existing experimental report.

Beamtime request
Say why you have choosen the specific instrument.
Give the number of samples and estimate the measuring time for each sample,
Show how you calculate the beamtime requirements.


Include a list of papers published in the last 2 years arising from ILL experiments, in the EPS section devoted to this.


Hereafter you will find selected examples of well written (and accepted) proposals submitted to the ILL in the past.

- proposal 5-26-162 (pdf file)

- proposal 5-26-167 (pdf file)


Whom to contact to get help?

For any further information, please do not hesitate to contact the ILL Scientific Coordination Office.