BESSY II Radiation Safety Requirements

Changes since May 2020

Since 1st of May 2020, most of the experiment hall of BESSY II (i.e. the area outside the outer shielding walls*) is not a controlled area but a monitored area, and the users working there are no longer required to have the status as radiation workers. Access to monitored areas can be granted without radiation passport, confirmation letter and RPDC; but we do need your SSR number, so you can be given a personal albedo dosimeter**. All other requirements and restrictions listed below will remain unchanged.

*Everything circled by the outer shielding wall, including the area above the storage ring, housing the IRIS and THz beamline, remains a radiologically controlled area.

**Exceptions exist within the framework of the 7-day regulation exclusively for guided visitor groups, users of the MX beamline, and service personnel with whose company no delimitation agreement has yet been concluded.

Access to radiation protection areas at HZB, Adlershof site

The following requirements/documents must be fulfilled/provided by guests who wish to access the radiologically controlled or monitored areas at BESSY II (including the entire experimental hall), the MLS, HoBiCaT and bERLinPro:

These requirements apply in principle to anyone wishing to gain access to radiation protection areas. Exceptions exist within the framework of the 7-day regulation exclusively for guided visitor groups, users of the MX beamline, and service personnel with whose company no delimitation agreement has yet been concluded.

Persons under 18 years of age, pregnant women and nursing mothers, persons with open wounds, as well as persons who lack one of the prerequisites, are prohibited from access.

Eating and drinking as well as the use of skin creams is forbidden in radiologically controlled or monitored areas.

For accessing radiologically controlled areas (incl. the IRIS and THz beamline stations), additionally you need:

  • Radiation Protection Delimitation contract with HZB (or German version). Private persons are not allowed access.
  • Radiation passport; if German, it must be registered and actualised to 2 months, and SSR- and company number must be entered on page 3
  • German companies only: valid §25 authorisation; available from the competent state offices for health and safety at work

If you have any questions concerning the delimitation contract, the §25 approval and the radiation passport, please contact your radiation protection officer. As a rule, the radiation protection officer knows whether the documents already exist.

If you have any questions, we are happy to support you! Please contact our Radiation Protection Office. Contact details can be found in the right-hand column.