Prof. Dr. Adolfo Vélez Saiz
Department of Physics
Center for Synchrotron Radiation
Maria-Goeppert-Mayer-Str. 2
44227 Dortmund
E-Mail: adolfo.velez@helmholtz-berlin.de

Secretariat
"In our research, we explore and develop accelerator structures used in accelerators worldwide to improve their capabilities and performance. In particular, we specialize in the development of superconducting cavities and SRF technology towards their use in high current and continuous wave (CW) applications. These types of systems represent a cornerstone in the realization of a new generation of powerful and flexible particle accelerators. As part of this research, we are leading the VSR demo project at Helmholtz Zentrum Berlin (HZB) with the goal of developing and commissioning a full cryomodule with 2 x 1.5GHz CW SRF cavities, whose extreme high-order modal attenuation (HOM) would open the door to flexible pulse length manipulations and maximum brilliance in light sources."



![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)




