D-Lecture: A Light and a Beam
The Advanced Photon Source facility illuminated by lightning. ( © Argonne National Laboratory
Alexander Zholents is the Director of the Accelerator Systems Division at Argonne National Laboratory.
Dr. Alexander Zholents from Argonne National Laboratory will present on 18th December 2014 his thoughts on "A Light and a Beam: a Theme with Variations". The presentation will be given at the lecture hall of the Wilhem-Conrad-Röntgen-Campus of HZB at 2 pm. After the presentation, we invite you to “Glühwein” and informal discussion.
What: D-Lecture
When: 14:00, 18. december 2014
Where: BESSYII, Lecture Hall
In his Distinguished Lecture, Aexander Zholents will discuss various techniques for making better beams of charged particles and beams better matched to applications. His examples will include the optical stochastic cooling, formation of the electron bunches for free-electron lasers, generation of x-rays pulses suitable for four-wave mixing experiments, laser-assisted electron beam conditioning for free-electron lasers, beam conditioning in storage rings for generation of picosecond x-ray pulses and more. Alexander Zholents is the Director of the Accelerator Systems Division at Argonne National Laboratory. His research interests are focused on design, construction, commissioning and operations of synchrotron radiation sources and x-ray free-electron lasers.
We are happy to inform you that we will provide you with a shuttle from Wannsee to Adlershof and return. If you like to use this shuttle for one-way, return or both, then please send an e-mail to jennifer.bierbaum@helmholtz-berlin.de. The shuttle from Wannsee will leave at 1 pm and return at 4 pm (sharp).
- Protein crystallography at BESSY II: faster, better and more and more automaticMany diseases are linked to malfunctions of proteins in the organism. The three-dimensional architecture of these molecules is often highly complex, but it can provide valuable insights into biological processes and the development of drugs. X-ray diffraction at the MX beamlines of BESSY II can be used to decipher the 3D structure of proteins. To date, more than 5000 structures have been solved at the three MX beamlines. Here, we present a review and an outlook with Manfred Weiss, head of the research group for macromolecular crystallography.
- What Zinc concentration in teeth revealsTeeth are composites of mineral and protein, with a bulk of bony dentin that is highly porous. This structure is allows teeth to be both strong and sensitive. Besides calcium and phosphate, teeth contain trace elements such as zinc. Using complementary microscopy imaging techniques, a team from Charité Berlin, TU Berlin and HZB has quantified the distribution of natural zinc along and across teeth in 3 dimensions. The team found that, as porosity in dentine increases towards the pulp, zinc concentration increases 5~10 fold. These results help to understand the influence of widely-used zinc-containing biomaterials (e.g. filling) and could inspire improvements in dental medicine.
- Fascinating archaeological find becomes a source of knowledgeThe Bavarian State Office for the Preservation of Historical Monuments (BLfD) has sent a rare artefact from the Middle Bronze Age to Berlin for examination using cutting-edge, non-destructive methods. It is a 3,400-year-old bronze sword, unearthed during archaeological excavations in Nördlingen, Swabia, in 2023. Experts have been able to determine how the hilt and blade are connected, as well as how the rare and well-preserved decorations on the pommel were made. This has provided valuable insight into the craft techniques employed in southern Germany during the Bronze Age. The BLfD used 3D computed tomography and X-ray diffraction to analyse internal stresses at the Helmholtz-Zentrum Berlin (HZB), as well as X-ray fluorescence spectroscopy at a BESSY II beamline supervised by the Bundesanstalt für Materialforschung und -prüfung (BAM).