Beamline ID15B is dedicated to the determination of structural properties of solids at high pressure using angle-dispersive-diffraction with diamond anvil cells.

The beam from an in-vacuum U20 insertion-device is focused by vertical and horizontal transfocator and monochromatized by Si(111) Bragg monochromator. The working energy for high pressure experiments is 30 keV with a flux of 1012photons/s at 200 mA. The beam size on the sample is normally about 10x10 µm2.

The scattered radiation is collected by a Mar555 flat panel detector, which has a 430 x 350 mm (555mm diagonal) active area.

A laser spectrometer is available for pressure determination by the ruby fluorescence method.
It is also possible to perform Raman scattering experiments simultaneously.

The beamline is equipped with severalmembrane-type diamondanvil cells (0-60 GPa), a Liquid He cooled cryostat to perform high pressure experiments at low temperatures (down to 10 K), and external resistive heating equipment for high temperatures up to 600 K.

A Nd-YAG laser system is availableexternally for high temperature annealing of samples inside the diamond anvil cell.

Beamline Energy Resolution
3 [eV] @ 30000 [eV]
Beamline Energy Range
30 [eV]
Max Flux On Sample
1 * 1012 [ph/s] @ 30000 [eV]
Spot Size On Sample Hor
10 - 50 [um]
Spot Size On Sample Vert
10 - 50 [um]
Divergence Hor
0.1 [mrad]
Divergence Vert
0.1 [mrad]
Photon Sources

IVU20

Type
Undulator
Energy Range
10 - 90 [keV]
Period
20 [mm]
Monochromators

Si111

Energy Range
30000 [eV]
Type
single bounce Si111 horizontal deflecting nitrogen cooled fixed exit Bragg monochromator
Resolving Power
1 * 10-4 [deltaE/E] @ 30000 [eV]
Other Optics

horizontal transfocator

vertical tranfocator

Endstations or Setup

EH1

Sample Environment

Description
Furnace:
External resistive furnace for diamond anvil cells; temperatures up to 600K
Temperature
300 - 600 [K]
Description
Liquid He cooled cryostat:
To perform high pressure experiments at low temperatures (down to 10K); high pressure anvil cells installed inside
It is a closed cycle cryostat.
Beam entry window: Mylar foil; exit window: Kapton foil
Temperature
10 - 300 [K]
Description
Membrane-type diamond anvil cells:
0-60 Gpa (up to 150Gpa, depending on diamond anvils) several different cells available + different cells from the high-pressure lab)
for Single crystal / powder diffraction
controlled with GE Pace 6000 (auto pressure controller)
Pressure (Max)
150 [mbar]
Description
Nd-YAG laser system:
External Nd-YAG laser system for high temperature annealing of samples inside the diamond anvil cell
Description
Raman spectrometer:
Detectors

mar555

Type
MAR555 flat panel detector
Pixel Size
X = 139 [um], Y = 139 [um]
Array Size
X = 2560 [pixel], Y = 3072 [pixel]
Passive or Active (Electronics)
Active
Dynamic Range
1 * 1018 [bit]

Detection

Detected Particle
Electron
Support Laboratories

hp-laboratory

Description

Fully equipped high pressure laboratory. This includes membrane diamond anvil cells, microscopes, micro hole, PRL system, gas loading machine (for inert gas only) .

Optics laboratory

Description

Raman and laser annealing system

contacts
Michael HANFLAND
Gaston Garbarino
Techniques
Diffraction
  • Crystallography
  • Crystallography (biological macromolecules)
  • Powder diffraction
Imaging
  • X-ray microscopy
Disciplines
Chemistry
  • Other - Chemistry
Earth Sciences & Environment
  • Other - Earth Sciences & Environment
Engineering & Technology
  • Other - Engineering & Technology
Material Sciences
  • Other - Material Sciences
Physics
  • Atomic & molecular physics
  • Other - Physics
control/Data analysis
Control Software Type
  • SPEC
Data Output Type
  • images
Data Output Format
  • mar2560, Esperanto, chiplot
Softwares For Data Analysis
  • Fit2d, Dioptas, CrysAlis
Equipment That Can Be Brought By The User
All type of diamond anvil cells