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Proposal submission guidelines

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.

ILL Electronic Proposal Submission Guide

If you are a new user please create an account in the ILL User Club.

System requirements

  • This application uses cookies, so please check if they are enabled on your browser.
  • Please update your browser to the latest version.

General Guidelines

The electronic application for beamtime is made via the ILL User Club and consists of two stages:

1 ) The first is a series of screens asking for details of your proposed experiment such as the title, proposers, instrument, etc.

  • There are 8 sections to be completed to submit your proposal submission.
  • When you press the [Next >] button or use the menu, the data you entered is automatically saved in a database; this process will enable you to retrieve your proposal each time you connect to the ILL User club (until the deadline).
  • To SAVE each screen of the proposal submission system, you must navigate to another screen (from 1 to 8). You can also use the menu on the left to navigate directly to a selected page.
  • The [Previous] button allows you to return to the previous page.
  • Do not use accents when completing the forms.
  • To modify or complete your proposal, connect to the ILL User club (under Proposals, select, manage my proposal, show + edit current proposal). You will retrieve the previously entered data. It is not necessary to create a new proposal each time if you want to update one.
  • Maximum time limit to modify a proposal: until the deadline.
  • After completing all the questions you will have to upload a 2 page A4 PDF document corresponding to the scientific case of the proposed experiment. Please use Times size 12 font.
  • You can Save, Submit or Delete your proposal.
  • When you press Submit for the first time, you will receive an email informing you of any missing information. You have until the deadline to fill this in. You will not receive any further emails when you press Submit.
  • There is NO submit button at the end and NO futher email to indicate you succeeded in submitting; you will receive notification only when you have submitted your proposal the first time.
  • As the system is linked to a database and information saved each time you navigate, submission is automatic.


2) In section two you will be asked to upload a detailed description of the proposed experiment and its scientific background. Hints to write a proposals are given here.


  • The proposal must be written in English and not exceed two portrait A4 pages.
  • Your proposal will only be accepted if you have filled in every page and uploaded the Scientific case (and technical form if applicable).
  • Use Times size > 11 for writing your scientific case, with at least single line spacing (unreadable proposals - font too small for example - will be rejected)
  • Proposals are reproduced in black and white for the panels – please bear this in mind when producing figures.
  • It is recommended to print out the final pdf file on your printer to check that both text and figures are clear.


Accepted formats when uploading files

Document to upload  
PDF File
Scientific Background  
Technical Form  
Experimental Report  


Questionnaire summary

The questionnaire is divided into 8 parts:

  1. Title and Information
    • Proposal title
    • Suggested keyword number
    • Indicate the main research area
    • This proposal is: a new proposal / a continuation / a resubmission
    • Previous proposal number (for continuation or resubmission)
    • Indicate if you need to use the Materials Science Support Lab
    • Indicate if you need simulation support (CS - C-lab)
    • Indicate if you need to use the Partnership for Soft Condensed Matter
    • Do you seek complementary SAXS measurements through the PSB Small Angle Scattering Platform?
    • Indicate if collaboration/contract with industry exists
    • Requested starting time (Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec)
    • Unacceptable dates.
  2. Proposers & Local Contacts
    • List of proposers with their status (Main Proposer*, Laboratory responsible, New neutron user, New ILL user)
    • Possibility of adding proposers: if not in the list you will be able to create them
    • Local Contact(s): Your contact(s) at ILL, if your local contact is not in the list please contact our Scientific Coordination Office

* The Main Proposer is the person to whom correspondence will be addressed.

  1. Instruments
    • Instrument(s) required
    • Estimated measuring time on each instrument
  1. Sample description (for each sample)
    • Substance(s)/Formula(ae)
    • Availability
    • Mass (in mg)
    • Size (in mm3)
    • Surface area (optional)
    • Category (Powder/Liquid/Gas/Polycrystalline/Single crystal/Other)
    • Space group (optional)
    • Unit cell dimension (optional)
    • T (in K), a, b, c, alpha, beta, gamma.
    • Sample container (cylinder, flat plate, pressure cell, etc..).
  2. Safety aspects & Experimental details
    • Safety aspects
      The sample is (inflammable/radioactive/etc...)
      Is the sample a transuranium sample?

      Is there any danger associated with the proposed sample or its preparation at ILL?

      If Yes or Uncertain, please give details of the risks associated.
    • Experimental details
      Energy/wavelength range
      Resolution in energy or wavelength
      Range of momentum transfer
      Resolution in momentum transfer.
  1. Sample environment equipment
    • Required equipment
    • If special material or equipement is supplied by the user, please give details in the technical form
    • Temperature range
    • Pressure range
    • Magnetic-field strength
    • Is there any danger associated with ancillary equipment?
    • If Yes or Uncertain, please give details of the risks associated.
  2. Abstract & Publications
    • Please provide an abstract* of 1200 char max, 11 lines.
      * To be correctly printed in PDF, the number of lines is limited. If you have more than 11 lines the abstract will be cut when printing; however the data will be saved in the database if the length is less than 1200 chars.
    • Your publication records (references to papers arising from ILL experiments)
      A maximum of 14 publication records will be on the printed version of your proposal. This information will be useful for the panel evaluating the proposal, to prove that previous use of ILL beamtime lead to successful experiments and publications.
  3. Proposal description & attachments
    • Upload document: Scientific background* and detailed description of the proposed experiment.
       Two A4 pages - PDF file.
    • Upload document: Technical form*, describing special material or equipement is supplied by the user (templates).
      Two A4 pages - PDF file.
    • Generate your complete proposal as a PDF file.
    • Submit* your proposal to ILL.

* you will be able to complete/modify it until the deadline but only Submitted proposals will be proccessed by ILL


Do not hesitate to contact our Club team at club(at)