The European XFEL is a research facility open to scientists worldwide. Beamtime is free of charge, but experiment proposals must go through a peer-review process. Proposals must be submitted through the User Portal to the European XFEL (UPEX) in the frame of specific calls for proposals. As an important condition for access, after the experiments, the authors must strive to publish the results in peer-reviewed journals.

2017 beamtime allocation

First call for proposals for Early User Experiments at the FXE and SPB/SFX instruments (deadline 20 March 2017)


Outcome of beamtime allocation process:

By end of June 2017

Allocation period:

September to November 2017
Precise dates will be confirmed depending on the commissioning progress currently under way.



The information sent to successful main proposers will contain the planned dates of the experiment and instructions on how to prepare for the corresponding visits to the European XFEL.

Information on scientific reviews

Proposals for Early User Experiments are submitted to a panel of international experts who will evaluate the scientific merit of the projects.
More information about the review process can be found on the Proposal Review Panel pages: