Users’ Area

Corona-related Safety Regulations for users at PETRA III and FLASH
Corona requires specific rules for the work at PETRA III and FLASH which have to be obeyed strictly. (January 2022) [More]
Routing slip for participants of beamtimes
During your stay for beamtime at DESY please carry this document with you. It has to be approved by the DESY Photon Science User Office before you start working at the beamline or lab. [More]
  • DOOR
    - User Registration - Proposal Submission - Administration of Experiment .....and more
DESY General Guidelines for Corona
General guidelines and regulations for the DESY Campus (as of 26 Jan 2022) [More]
Komitee Forschung mit Synchrotronstrahlung

The User Office has moved to Building 94/O1.013
See this map on how to find us:

Icon map (1.3 MB)
location of the new User Office

Test requirements for users coming to PETRA III / FLASH

Users have to present:

- proof of full vaccination/recovery is required for participation in beamtime. Accepted vaccines are listed here
- a negative PCR test for SARS-CoV-2 with the result being available before entering the DESY campus. Vaccination or recovery from Covid-19 will not release users from this obligation. The test result must not be older than 72 hrs.
The PCR test will be checked when you pick up the Hostel room key. Without a valid negative test result you will not get the key.

During you stay at DESY please perform a self-test at least every second day, but immediately when having symptoms. Sufficient test kits must be supplied by the user. If you have travelled by public transport (train, airplane), please do a first self-test already before proceeding to the beamline.

Allowed number of onsite participants

A maximum number of up to four persons are allowed for experiments at PETRA III. Exceptions from this rule are not possible. Do not send more persons than needed for the experiment.

Leader and PI of proposals with scheduled beamtimes will be informed via e-mail about changes of regulations.

General travel regulations for people coming to Germany↵

All persons coming from abroad have to provide a proof of vaccination/recovery or a negative test result, i.e. PCR-Test (max. 72h) or Antigen-Test (max. 48h).

All travellers coming from an international risk area as defined by German authorities have to register online via

Please note different regulations for
1) 'high incidence areas'
For persons coming from a high incidence area a 10-day quarantine is required. As soon as a proof of complete vaccination (with a vaccine accepted by the EU ) or of recovery is uploaded via the online travel registration, the quarantine can be terminated.
For persons without vaccination or recovery, the quarantine can be termined after 5 days by uploading a negative test result.

2) 'areas of variant of concern' NO VISIT AT DESY POSSIBLE!

DESY Hostel does not offer quarantine rooms for DESY users

Fast Track Access for research related to COVID-19 is possible

Synchrotron radiation sources and FELs offer cutting-edge research possibilities in all areas of applied and fundamental natural sciences and in the field of medical diagnosis. At present, PETRA III and FLASH host more than 20 beamlines and more than 60 experimental stations and setups. The main experimental applications comprise X-ray spectroscopy, X-ray diffraction or imaging, X-ray scattering, X-Ray protein crystallography, VUV/XUV spectroscopy/scattering and FEL experiments with soft X-rays (XUV).