A view of the experimental hall at BESSY II.
© S. Steinbach / HZB
40 years of research with synchrotron light in Berlin
Outside view of BESSY II light source. The significant facility is built like a ring with a circumference of 240 m.
© V. Mai / HZB
Scientists work at nearly 50 stations in the experimental hall.
© S. Steinbach / HZB
This is how BESSY I looked like 40 years ago.
© HZB
The first light source was built 1979-1981 and started operation in 1982.
© HZB
BESSY I was located in Wilmersdorf and brought many scientists from all over the world. After 16 years BESSY II a new facility took over.
© HZB
Press release _ Berlin, 14 September: For decades, science in Berlin has been an important driver of innovation and progress. Creative, talented people from all over the world come together here and develop new ideas from which we all benefit as a society. Many discoveries – from fundamental insights to marketable products – are made by doing research with synchrotron light. Researchers have had access to this intense light in Berlin for 40 years. It inspires many scientific disciplines and is an advantage for Germany.
In September 1982, the first electron storage ring officially went into operation in Berlin-Wilmersdorf under the name BESSY (Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung). In order to create this coveted synchrotron light, electrons are accelerated to near light speed in a circle. As they race around at this speed they emit special light, which scientists can use to look inside their samples. The successor facility in Berlin-Adlershof, BESSY II, is also based on this principle. It produced its first light beam in 1998 and is operated by Helmholtz-Zentrum Berlin (HZB). Presently, the facility receives around 2700 visits per year from guest researchers from everywhere in the world. It will be celebrating its 25th anniversary in September 2023.
Energy research is the driving force
Since the generation of the first beam, the possibilities of researching with synchrotron light have expanded considerably. Perhaps the most important experiments being done today are those for researching the materials we need for an efficient energy supply. Researchers at BESSY II are developing solar cells and materials for powerful batteries, for example. Also literally in the focus of the light at BESSY II are new thin-film catalysts for producing green hydrogen. Synchrotron light is furthermore perfectly suited to researching materials used in low-energy information technologies.
Synchrotron light attracts talents and is a source of inspiration
In the last 40 years, our societal challenges have changed radically. In response, the means for performing experiments at BESSY II have been continually adapted and upgraded. This has always been done in close collaboration with partners and users from all over the world. As these changes unfold, synchrotron light remains a source of inspiration and brings together people from all different disciplines.
“Interesting experimental opportunities attract creative talents and bring a boost to fields and research communities. We see this currently in the research into catalysts: synchrotron light is essential for developing industrially relevant catalysts ‘made in Berlin’ for the green hydrogen economy,” says the scientific director of HZB, Prof. Bernd Rech.
40 years of accelerator know-how in Berlin
The operation of the BESSY II accelerator is highly complex. For decades, Berlin and HZB have succeeded in training and retaining the necessary engineering and scientific experts. So that Germany and the world continue to benefit from synchrotron light over the next decade and beyond, the accelerator specialists of HZB are collaborating intensively with partners on the concept for a successor source, BESSY III.
Visits for media representatives
We cordially invite representatives of the media to visit the accelerator BESSY II and are happy to put you in touch with experts on the following topics:
- Energy turnaround and expansion of photovoltaics
- Catalysts for producing green hydrogen
- Powerful, long-lasting batteries and energy stores
- Accelerator research & development
- Quantum materials
- Life sciences / Research about the corona virus
- Electrocatalysis with dual functionality – an overviewHybrid electrocatalysts can produce green hydrogen, for example, and valuable organic compounds simultaneously. This promises economically viable applications. However, the complex catalytic reactions involved in producing organic compounds are not yet fully understood. Modern X-ray methods at synchrotron sources such as BESSY II, enable catalyst materials and the reactions occurring on their surfaces to be analysed in real time, in situ and under real operating conditions. This provides insights that can be used for targeted optimisation. A team has now published an overview of the current state of knowledge in Nature Reviews Chemistry.
- Successful master's degree in IR thermography on solar facadesWe are delighted to congratulate our student employee Luca Raschke on successfully completing her Master's degree in Renewable Energies at the Hochschule für Technik und Wirtschaft Berlin - and with distinction!
- BESSY II: Phosphorus chains – a 1D material with 1D electronic propertiesFor the first time, a team at BESSY II has succeeded in demonstrating the one-dimensional electronic properties in phosphorus. The samples consisted of short chains of phosphorus atoms that self-organise at specific angles on a silver substrate. Through sophisticated analysis, the team was able to disentangle the contributions of these differently aligned chains. This revealed that the electronic properties of each chain are indeed one-dimensional. Calculations predict an exciting phase transition to be expected as soon as these chains are more closely packed. While material consisting of individual chains with longer distances is semiconducting, a very dense chain structure would be metallic.