Before beginning your experiment, please contact an Experimental Hall Operator (EHO) in order to obtain your Safety Approval Form (SAF) and your key.

  • A green SAF is delivered for experiments which present no risk; consequently, the unattended operation mode is allowed.
     
  • A yellow SAF is delivered for experiments which need a particular check by the Safety Group at the beginning of the experiment, but where after this, the unattended operation mode is allowed.
     
  • A red SAF is delivered for experiments which present a risk; consequently, the unattended operation mode is forbidden: at least one person must be present at all times (24h a day) on the beamline.
    For a 'RED' Standard Experiment, the ESRF gives a financial support to 4 users (instead of 3 for a yellow/green experiment).