Welcome to the HZB User Facility BESSY II

IMPORTANT INFORMATION - User Operation under Covid-19 conditions

We are very pleased to inform you that we will resume user operation at our HZB facilities in October. To slow down the spread of the coronavirus SARS-CoV-2 we are forced to impose the following binding restrictions and regulations:

Restart of user operation at HZB          Wiederaufnahme des Nutzerbetriebs am HZB

More detailed information on

  • Safety & Access rules
  • Surrogate Call for Proposal
  • Mail-in Service & Remote Access
  • Fast Track Access for SARS-CoV-2 Proposal

can be found at: Measures against the Coronavirus SARS-CoV-2


The Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) operates the large scale research facility BESSY II, a third generation synchrotron source on Wilhelm-Conrad-Röntgen-Campus in Berlin-Adlershof. BESSY II provides ultrabright photon beams from the long wavelength Terahertz region to hard X-rays with complete control of the polarization of the radiation and energy range. In addition, HZB is home to a number of state-of-the-art on-site laboratories and CoreLabs. All these research facilities are designed to serve researchers from universities, foreign research institutions and industry.

APPLY for Beamtime

We welcome the submission of proposals for the large scale facility BESSY II. Please find all information about the proposal submitting process and the experimental infrastructure at HZB in this section.

DURING your Beamtime

Welcome at BESSY II. Please find here all information you need for your stay at our facility.

AFTER your Beamtime

There are still some important tasks to be done after your experiment has been completed.


With a series of annual user meetings and foresight workshops we bring together our user community to intensify scientific exchange.