Beamline P61 is divided into 2 stations - P61A (HZG) and P61B (DESY). Operation of these two different stations using synchrotron X-rays is not independent and beamtime is shared 50%. P61B, the Large Volume Press portion of the beamline, is already operating without beam for ex situ studies at extreme conditions, which will remain possible when P61A is operating with beam. The beamline is now under commissioning.
The 10 wigglers (ID) provide synchrotron X-ray radiation with a usable energy range of 30 - 200 keV (photons with even higher energies exist, of course). The beamline is designed for the combination of Energy-dispersive X-ray diffraction (ED-XRD), Angle-dispersive X-ray diffraction (AD-XRD) and Imaging techniques (radiography/absorption contrast). Note that AD-XRD is currently not implemented until the respective beamline stations each obtain a monochromator.
Research at P61A will focus on engineering materials science. The structure-properties relationship in technically relevant materials will be studied. In-situ experiments for investigations of materials and processes will be designed and built together with internal and external partners. The method applied is energy-dispersive diffraction at high photon energies enabeling, e.g., near-surface and bulk residual stress and phase analysis with a fixed gauge volume and fixed scattering vector. Furthermore, complex sample environments can profit from a fixed scattering vector.
Research at P61B is focused on extreme conditions materials and Earth science. The structure and properties of samples can be measured in situ using these techniques under extreme conditions of high pressures and temperatures using ED-XRD and radiography. Various combinations and additional set ups are envisaged for the future, including AD-XRD and simple tomography in a 2nd smaller LVP (e.g. Paris-Edinburgh press).
P61B has a dedicated sample preparation laboratory for users on the beamline. It is fully equipped to build cell assemblies and anvil configurations for the LVP. Sample powders can be encapsulated with metal foils using various tools and jigs, and welded if required using a precision jewelry welder. Starting materials can also be synthesised or treated in the available high temperature (1400 C), vacuum furnace (> 10-5 mbar).
Prior to your arrival, please contact the beamline manager (Robert Farla) for special requests using the 3-axis CNC to make cell assembly parts from various ceramics.