Scientific Instrument SCS

The Spectroscopy and Coherent Scattering (SCS) instrument will enable time-resolved experiments to unravel the electronic and structural properties of complex materials and nanostructures in their fundamental space-time dimensions.

Scientific objectives include, but are not limited to, the understanding and control of complex materials, the investigation of ultrafast magnetization processes on the nanoscale, the real-time observation of chemical reactions in liquids, and the exploration of nonlinear X-ray spectrocopy techniques that are cornerstones at optical wavelengths.

The two baseline SCS experiment stations are complemented with a chemistry station and a high-resolution spectrometer by the Heisenberg RIXS (hRIXS) user consortium.  A combination of coherent X-ray scattering with spectroscopy methods will make it possible to investigate atomic as well as electronic details and dynamics on femtosecond time scales with spatial resolutions down to a few nanometers.

Early user science workshops took place in February 2018 and January 2019. The instrument talks and details on open community proposals can be found here including day one instrumentation and early science cases. The XRD and chemistry stations will be commissioned together with the high-resolution RIXS spectrometer starting 2020.

Please contact the SCS team for further details and discuss your experiment plans before submitting your proposal.

The instrument and beam parameters for User Run 6, scheduled for the second half of 2020, can be found here.

Key (expected) features in full user operation

Photon Energy
0.25­–3.00 keV
X-ray pulse energy
Up to 10 mJ
X-ray pulse duration
1–100 fs (FWHM)
Mono resolving power
Up to 10 000;
high-resolution grating upgrade <40 000
Linear and circular
Focal spot size at sample
1–2 µm (horizontal, vertical)
Tunable up to 500 µm
FFT experiment station
Fixed target sample holder with 50 mm x 50 mm frame
Sample transfer system
DC electromagnet ≤0.5 T
Cryostat sample holder and THz mirror stage
XRD experiment station
UHV diffractometer for fixed targets (six degrees of freedom)
Continuous rotating detector flange: 60º ≤ 2θ ≤ 150º (2θ is scattering angle)
Cryostat, THz mirror stage, sample transfer system
Chemistry station
Liquid jet system
1 Mpx DSSC (4.5 MHz, 800 frames per train)
2 Mpx FastCCD (60 Hz, 1 frame per train)
RIXS Spectrometer
Information follows, inquire for details
Optical laser system
800 nm, up to 1 mJ, 15–100 fs
1030 nm, >20 mJ, 850 fs
Conversions from visible to IR via SHG, THG, OPA
THz (0.3 THz, LiNbO3)