fsDiffractometer

Chamber features

Diffractometer

motor controlled two-circle goniometer
Software motion control via SPEC
variable angular resolution

Detection

fs-laser synchronized gated detection (Avalanche Photo Diode)
Single photon counting detection for low intensity measurements
laser light screened detection (<10-12 attenuation)
sample current measurement available
data acquisition via SPEC

Sample environment

He cryostat temperature range: 6K to 400K
in-situ sample cleaving available
sample transfer system available

UHV

< 1x10-9mbar
(turbo-molecular pump, Ion pump, LN-cooling trap)

Special chamber features

laser safety protected viewports

The femtosecond-diffraction chamber scattering chamber was set up in 2008 and has since then been available as experimental station for user operation at the HZB. It was built for time-resolved resonant soft X-ray diffraction measurements at accelerator based X-ray sources providing fs X-ray pulses. The main scientific focus of these measurements is on photo-induced phase transitions in complex materials.

View into the vacuum vessel of the femtosecond-diffraction chamber.