PETRA III at DESY
P61 High-Energy Wiggler Beamline

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).

News

  • For experimental time using the LVP, please visit the P61B webpage at Photon Science at DESY.
  • P61B LVP (DESY) will start user runs in II-2020 (from August until December 2020).
  • P61A (HZG) anticipates first user runs in December 2020.
Beamline Energy Resolution
320 [eV] @ 59000 [eV]
470 [eV] @ 122000 [eV]
Beamline Energy Range
20 - 500 [keV]
Max Flux On Sample
1 * 1012 [ph/s] @ 50 [keV]
Spot Size On Sample Hor
0.001 - 2.2 [mm]
Spot Size On Sample Vert
0.001 - 1.7 [mm]
Divergence Hor
4 [mrad]
Divergence Vert
0.11 [mrad]
Photon Sources

Damping wiggler

Type
Wiggler
Source Divergence Sigma
X = 1165 [urad], Y = 50.8 [urad]
Source Size Sigma
X = 1283 [um], Y = 55.7 [um]
Deflection Parameter K
28.4
Energy Range
10 - 1000 [keV]
Total Power
21103 [W]
Number Of Periods
19
Note
This information is valid for 1 damping wiggler. The beamline receives synchrotron radiation from 10 wigglers in series, each 4 m long and spaced apart by 2 m.
The distance of the last wiggler to the Optics Hutch of P61A is about 110 m.
The distance of the last wiggler to the Optics Hutch of P61B is about 133 m.
Other Optics

Front end filters

Description
The incident beam can be filtered by the following:
1x CVD-diamond (0.3 mm) & Cu (0.05 mm) - MANDATORY
2x CVD-diamond (0.6 mm) & Cu (0.1 mm)
3x CVD-diamond (0.9 mm) & Cu (0.15 mm)
plus 4 mm C (with various combinations of the above)

Slits

Description
Incidence slits to cut the beam before the sample

Tunable Absorber

Description
Two copper wedges enabling absorber thicknesses from 0 to 100mm (continuous)
Endstations or Setup

P61A - Heavy load diffractometer

Description
Heavy load diffractometer (Huber), had before been used at HARWI II at DORIS III
Diffractometer
Heavy load diffractometer (Huber), had before been used at HARWI II at DORIS III

Sample

Sample Type
Powder, Other:

P61B - Large Volume Press (LVP)

Description
The LVP that is installed at P61B is the world’s first 6-rams-LVP operated at a synchrotron facility. This type of instrument offers deformation capability, precise control of the anvil positions and high efficiency of pressure generation. Experiments at extreme conditions of high pressures and temperatures are possible in various modes using a combination of 6 first-stage anvils and 6 or 8 second-stage anvils (6-6 and 6-8 compression geometries, respectively). Using the 6-8 mode with tungsten carbide second stage anvils, pressures up to 24 GPa and temperatures up to 2,400 K can be routinely generated at the expense of a smaller anvil gap, up to 10 degrees for diffracted X-rays. The user may bring their own set ups using advanced, ultra-hard and tapered WC anvils to generate even higher pressures up to > 40 GPa combined with high-temperatures (> 2,000 K), and beyond 60 GPa using sintered diamond anvils. Alternatively, the 6-6 mode offers a wider anvil gap, particularly up to 23 degrees in the vertical plane for X-ray diffraction, but the maximum sample pressure is limited to about 20 GPa using a regular set up. Controlled deformation (anisotropic compression) of samples is only possible in 6-6 mode.
Microscopes
Double objective white-beam microscope. The magnification of each objective is 10x and 20x, respectively. Imaging is in the form of radiography (absorption contrast).
Diffractometer
2x HP Ge-SSD detectors for powder diffraction using polychromatic X-rays on samples at extreme conditions of high pressure (and temperature).
Detectors Available
HP Ge-detector
sCMOS camera

Sample

Sample Type
Crystal, Amorphous, Powder
Other Sample Type
Polycrystalline
Mounting Type
Inside a High-Pressure cell assembly (see below)


Techniques usage

Diffraction / Powder diffraction
Using 1 or 2 HP Ge-SSD positioned at desired angle of diffraction ranging between 5 deg to 23 deg (2theta). Collimation and incident/receiving slits will be used to remove the sample environment contribution to the diffraction patterns.
Diffraction / Time-resolved studies
Continuous collection of diffraction patterns at count rates up to 1 million cps.
Imaging / Medical application
Radiography imaging using a double objective X-ray microscope. The live preview will enable the user to locate the sample in the cell assembly. Continuous high-fps acquisition is also possible for e.g. viscosity and deformation (rheology) experiments.

Sample Environment

Description
High Pressure generation in the LVP
Pressure (min)
0.3 [GPa]
Pressure (Max)
25 [GPa]
Temperature
300 - 2400 [K]
Detectors

HP Ge-detector

Type
2x High-purity solid-state Germanium detector (Ge-SSD)
Description
Used for white beam diffraction (ED-XRD) in the horizontal and vertical planes
Time Resolved
Yes
Thickness
10 [mm]
Passive or Active (Electronics)
Active
Dynamic Range
3 * 106 [cps]
Output Readout Software
Quantum Xpress 3 mini
Atomic Composition
Ge
Density
5.323 [g / mm^3]

Detection

Detected Particle
Photon

sCMOS camera

Type
PCO.edge 5.5 MP / HS-CL with true global shutter, rolling shutter and global reset.
Description
PCO.edge 5.5 MP camera with High-Speed CameraLink for 100 fps/full resolution image acquisition, or over 1000 fps in a ROI pushing the limits of a 10 GE network connection.
Time Resolved
Yes
Pixel Size
X = 6.5 [um], Y = 6.5 [um]
Array Size
X = 2560 [pixel], Y = 2160 [pixel]
Passive or Active (Electronics)
Active
Dynamic Range
3 * 105
Signal/NoiseRatio
3 * 10-1 [e- rms]
Output Readout Software
Custom

Detection

Detected Particle
Photon
Support Laboratories

P61B - Sample Preparation Lab

Description

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). 

Special requests

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. 


contacts
Thomas Wroblewski (P61A)
Robert Farla (P61B)
Thomas Dose (P61A)
Stefan Sonntag (P61B)
Techniques
Diffraction
  • Powder diffraction
  • Surface diffraction
  • Time-resolved studies
  • Topography
Imaging
  • Medical application
  • X-ray microscopy
  • X-ray tomography
Scattering
  • Elastic scattering
  • Time-resolved scattering
  • Wide angle scattering
Disciplines
Chemistry
  • Physical Chemistry
Earth Sciences & Environment
  • Geology
  • Mineralogy
  • Natural disaster, Desertification & Pollution
  • Other - Earth Sciences & Environment
  • Water sciences/Hydrology
Energy
  • Technique Development - Energy
Engineering & Technology
  • Aeronautics
  • Other - Engineering & Technology
  • Technique Development - Engineering & Technology
Life Sciences & Biotech
  • Medicine
  • Technique Development - Life Sciences & Biotech
Material Sciences
  • Knowledge based multifunctional materials
  • Metallurgy
  • Other - Material Sciences
  • Technique Development - Material Sciences
Physics
  • Hard condensed matter - structures
  • Surfaces, interfaces and thin films
  • Technique Development - Physics
Address
P61 High-Energy Wiggler beamline
Build. 46g (Peter Paul Ewald Hall)
Notkestr. 85
D-22607 Hamburg, Germany
control/Data analysis
Control Software Type
  • Tango
Data Output Type
  • Energy spectra, images
Data Output Format
  • HDF5, TIF
Softwares For Data Analysis
  • e.g. PDindexer (http://pmsl.planet.sci.kobe-u.ac.jp/~seto/)
Equipment That Can Be Brought By The User
General - Sample environment compatible with the beamline geometry
P61B - Anvils and pre-made cell assemblies
Other Equipment Available On Site
P61B - Benchtop XRD, PUK welder, vacuum and firing ovens, diamond saw, polishing equipment, sensitive balance, stereoscope with HD camera,...
in partnership with