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BESSY II

#BESSYbeamlinePortraits: Roberto Felix Duarte

2020-07-16
By: Guestpost
On: 2020-07-16
In: BESSYBeamlineScientists, Careers, Energymaterials, Lightsources

At BESSY II, we are operating some 50 beamlines, each of which offers the latest methods in spectroscopy and microscopy.
Each beamline has a dedicated beamline scientist, who not only manages all the projects on the beamline and knows its every secret, but also works with local and visiting scientists to get the best results out of the beam and its instruments for every specific research question they have. Without the beamline scientists, much of the science at BESSY II could never happen.
But who are they? What makes a good beamline scientist and where do they come from? In this little series you are going to find out. Today we introduce Dr. Roberto Felix Duarte, who works at the KMC-1 beamline.Read More →

face mask produced by HZB colleague

HZB colleague starts face masks production

2020-06-05
By: Silvia Zerbe
On: 2020-06-05
In: Corona

Inés is a mechatronics technician at BESSY II. In March she started to produce face masks with some of her colleagues in order to donate them to social institutions. The project masken.berlin has since then produced more than 1600 self-sewn masks. A few weeks ago the situation was quite different: In mid-March, the number of infections in Berlin rose daily in the triple digits, shops and schools were closed down, the newspapers were full of reports that doctors’ surgeries, hospitals and social institutions were lacking protective equipment of all kinds. Practically, not even a simple cloth mouth and nose protector could be found anywhere. DoRead More →

Götz Schuck and KMC2

#BESSYbeamlinePortraits: Götz Schuck and the KMC-2 /KMC-3 beamline

2020-01-20
By: Guestpost
On: 2020-01-20
In: BESSYBeamlineScientists, Careers, Energymaterials, Lightsources

At BESSY II, we are operating some 50 beamlines, each of which offers the latest methods in spectroscopy and microscopy.
Each beamline has a dedicated beamline scientist, who not only manages all the projects on the beamline and knows its every secret, but also works with local and visiting scientists to get the best results out of the beam and its instruments for every specific research question they have. Without the beamline scientists, much of the science at BESSY II could never happen.
But who are they? What makes a good beamline scientist and where do they come from? In this little series you are going to find out. Today we introduce Dr. Götz Schuck, who works at the KMC-2 and the KMC-3 beamlines.Read More →

#BESSYbeamlinePortraits: Anna Makarova and the Russian-German dipole beamline

2019-11-13
By: Guestpost
On: 2019-11-13
In: BESSYBeamlineScientists, Careers, Energymaterials, Lightsources

It is a Russian-German dipole beamline, part of the Russian-German Laboratory at BESSY II. It covers a soft X-ray photon energy range up to 1200 eV. It ends with a fixed experimental station RGL-PES that offers a multi-technique approach for the investigation of the electronic, chemical and structural properties of materials: X-ray photoemission spectroscopy and X-ray absorption in all possible modes (fluorescence yield, total and partial electron yields).Read More →

#BESSYBeamlineScientists: Erika Giangrisostomi and the PM4 beamline

2019-09-18
By: Guestpost
On: 2019-09-18
In: BESSYBeamlineScientists, Careers, Energymaterials, Lightsources

The beamline is called PM4. As a dipole beamline, it provides a moderate photon flux over a wide range of photon energies, in our case in the vacuum ultraviolet/soft X-ray regime. It serves the fixed end-station called LowDosePES. As the name suggests, its specialty is photoemission spectroscopy (PES) at low X-ray dose. Read More →

#BESSYBeamlineScientists: Dr. Annette Pietzsch and UE112 PGM-1

2019-05-13
By: Guestpost
On: 2019-05-13
In: BESSYBeamlineScientists, Careers, Lightsources

Each beamline at BESSY II has a dedicated beamline scientist. But who are they? In this little series you are going to find out.Read More →

Users at BESSY II: Nafion, the talented membrane for fuel cells and 4D-printing

2018-11-01
By: Antonia Roetger
On: 2018-11-01
In: Energymaterials, International, Lightsources, Summerstudents

Thermoplastic ionomer materials such as Nafion do have many talents: they can be used as membranes for proton exchange in fuel cells, but they have also attracted attention as shape memory materials: Via external stimuli such as heat or an electric field, it is possible to trigger a change in shapes. Applications in textiles, biomedicine, aerospace, sensors and coatings are possible. Nafion: a membrane with shape memory Nafion is one of those materials: as a membrane in a fuel cell, its high proton conductivity allows a fast pass of hydrogen ions (protons). And its internal shape plays a crucial role. Now a team from Brazil hasRead More →

The long way of undulators: 70 years old and still up-to-date

2018-09-27
By: Guestpost
On: 2018-09-27
In: Lightsources

by Jonas Böhm The last finishing touches are being made to the cryogenic undulator CPMU-17 before it will be installed in the BESSY II storage ring next week. A good moment to look back. The long way of undulators: 70 years old and still up-to-date Home of the first undulator was Stanford. Its linear accelerator (you can see its tunnel in the image) is claimed to be “the world’s most straight object”. In 1952, the Austrian scientist Hans Motz and his team conducted the first experiment, in which a 100-Mev electron beam from the Stanford linear accelerator passed through the undulator. Light radiated by the beam wasRead More →

What is an Undulator?

2018-09-19
By: Guestpost
On: 2018-09-19
In: Lightsources

by Katharina Kolatzki With the new cryogenic undulator CPMU-17 being installed into the BESSY II storage ring, I thought it a good moment to get everyone who may not be that familiar with this essential part of the synchrotron up to speed. What is an Undulator? By now, you might have noticed that undulators are pretty cool things (even the room temperature devices) that are an essential part of synchrotron sources such as BESSY II. In order to understand a little bit more about them, here is a brief introduction to undulators. Synchrotron sources provide especially brilliant light that can be used to examine aRead More →

Mathematics Inspired By Nature. Or Bees That Are Not Biting.

2018-08-10
By: Ilyas
On: 2018-08-10
In: International, Students, Summerstudents

If you try to search for “PSO” abbreviation in wiki you may find Pacific Symphony Orchestra or Phase-shift oscillator. However, my project at HZB is about neither music nor electricity, but mathematics. For almost a month here I have been working on an algorithm called Particle Swarm Optimization method and I would like you to have some impression of it.  Optimization Actually, the definition of optimization problem is quite simple. One has a function of n-variables f(x1, …, xn) and seeks to find such values of variables that give minimum to the function. However, the solution is not that simple, because in general you cannotRead More →

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