ID12 - Circular Polarisation Beamline

Synopsis

Beamline ID12 is a unique instrument worldwide that offers users full control of the polarisation state of the X-ray beam over a wide energy range (2-15 keV) and is devoted to research at the ultimate limits of X-ray spectroscopy.

Status: open

Disciplines

Physics
Chemistry

Applications

Solid state physics
Magnetism
Spintronics
Multiferroics
Nanoparticles
Thin films and multilayers
Diluted magnetic semiconductors
Molecular magnets
Physics and chemistry of actinides
Magnetization dynamics
Optical activity
Chirality

Techniques

XAS - X-ray absorption spectroscopy
XMCD - X-ray magnetic circular dichroism
XMLD - X-ray magnetic linear dichroism
XNCD - X-ray natural circular dichroism
XNLD - X-ray natural linear dichroism
XMchiD - X-ray magnetochiral dichroism
XDMR - X-ray detected magnetic resonance
XRR - X-ray reflectivity

Energy range

2.05 - 15.0 keV

Beam size

Minimum (H x V) : 100.0 x 20.0 µm²
Maximum (H x V) : 1.0 x 1.0 mm²

Sample environments

Low temperature (down to 2.2K)
Electromagnet with maximum field of 0.6 Tesla and 1Hz flipping frequency
Superconducting split-coil magnet with 6 Tesla field
High field superconducting solenoid of 17 Tesla
EPR/XDMR spectrometer in the X-band
Set-up for angular-dependent XAS measurements
Possibility to apply high electric field (up to 1MV/cm)

Detectors

Single- or multi-anode ion implanted Si P+NN+ photodiodes
35-element silicon drift detector

Technical details

The beamline is capable of offering fast switching circular and linear polarisation from helical undulator devices from 2 to 15 keV. As such, it provides a unique source to the scientific community. The suite of experimental stations including sample environment (high magnetic fields and low temperature control) and detection schemes that make it possible to retrieve all information from X-ray absorption spectroscopy and to reliably measure dichroic effects as small as 10^{-5}.