DESY Photon Science User Office

Rules for external users (Tests, Quarantine etc)
Users of DESY Photon Science Experimental Facilities (PETRA III, FLASH, DESY NanoLAb etc.) please consult this document for regulations to access DESY campus and facilities. For any question please contact us via [More]
Corona-related Safety Regulations for Work at PETRA III and FLASH
Corona requires specific rules for the work at PETRA III and FLASH which have to be obeyed strictly. (Feb 2021) [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. PETRA III and FLASH Group members do not need this document! [More]
Information for Quarantine in Hotel
Please consult this document for HOTEL quarantine prior to your beamtime. DESY Hostel quarantine rooms are no longer available for users at PETRA III and FLASH. [More]
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    - User Registration - Proposal Submission - Administration of Experiment .....and more
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Regulations for the access to PETRA III and FLASH are outlined in the pdf documents on the right hand side of this webpage

Users with scheduled beamtimes will be informed regularly via e-mail about changes of regulations.


The obligation to present a negative molecular biological PCR test for SARS-CoV-2 with the result being not older than 48 hrs when coming on campus will remain in place for all users coming on-site. Vaccination or recovery from Covid-19 will not release users from this oblication.
For users coming from international risk areas as defined by German authorities we will follow the federal regulations valid during the time of arrival and beamtime.
Please note different regulations for
1) 'risk areas'
2) 'high incidence areas'
3) 'areas of variant of concern' > NO VISIT AT DESY POSSIBLE!

For 1) the quarantine can be avoided by presentation of a negative PCR test
For 2) a 10 quarantine is required, which can be terminated with a negative PCR test on the 5th day of quarantine.
For 3) a visit at DESY is not possible.

DESY Hostel does not offer quarantine rooms for DESY user visits anymore

Allowed number of participants per beamtime

Also in 2021 at PETRA III not more than three users can join for a beamtime. If the experiment cannot be conducted safely with 3 persons please contact and to request an exceptional permission.

For FLASH not more than six users can join for an experiment. For advice please contact to request an exceptional permission.

DESY Photon Science
User Office Address

DESY Photon Science User Office
PETRA III Experimental Hall "Max von Laue" / L106
Notkestr. 85


+49 40 8998 2368


+49 40 8998 4475



Location of the office

PETRA III Experimental Hall "Max von Laue"
(bldg. 47c) room L106


Daniela Unger
E-Mail: Daniela Unger
Phone: +49 (0)40 8998 2368
Location: 47c / L106
Head of User Office
Sarah Arugolanu
E-Mail: Sarah Arugolanu
Phone: +49 (0)40 8998 2304
Location: 47c PETRA III Exp. Hall "Max von Laue" / L106
Secretary User Office