X-Treme / X07MA:
X-ray absorption spectroscopy at high magnetic fields and low temperature

The X-Treme beamline produces a high flux of soft X-rays with variable polarization from an undulator source.

The permanent endstation is a 7T-2T 2D vector magnet providing sample temperature down to 2K.

The X-Treme beamline was constructed and is operated in a consortium between PSI (Microscopy and Magnetism group, SLS) and the group of Prof. Harald Brune, Laboratory of Nanostructures at Surfaces at EPFL. The funding for the beamline comes from PSI and for the endstation from the EPFL and the Swiss National Science Foundation.

Energy range	400-2000 eV
Flux (700eV)	4 x 10^15 photons / s / 0.1%BW / 0.4 A
Focused spot size	exit slit µm x 230 µm (V x H)
Spectral resolution	> 5000
Polarization	Linear: 0 deg (horizontal) to 90 deg (vertical) Circular: right / left
Endstation	Magnet with up to 7T along the beam direction. Up to 2T square in horizontal plane Sample temperature 2K-370K.