The SwissFEL Furka Experimental Station
The Furka experimental endstation, located at the soft x-ray Athos beamline of the SwissFEL, is dedicated to the study of quantum materials using time-resolved Resonant Inelastic and Elastic X-ray Scattering (tr-RIXS and tr-REXS) as well as X-Ray Absorption (tr-XAS) spectroscopy. In particular, tr-RIXS opens new scientific opportunities thanks to its unique capability to probe energy and momentum-resolved dynamics of elementary excitations involving different degrees of freedom in solids.
The endstation is now open for user proposals, next submission deadline will be announced at the link: https://www.psi.ch/en/swissfel/calls .
The presentation of the current status of the endstation and summary of parameters given in the zoom session of the 6th September 2023 is avaialble for download at the link:
https://drive.switch.ch/index.php/s/bduh6K3yOGXsVJy/download
Furka user wiki: https://gitlab.psi.ch/furka-endstation/user-wiki
FEL parameters
| Athos parameters at Furka |
|---|
| Photon energy range: 400 - 1900 eV |
| Pulse energy (SASE): 4 mJ @710 eV |
| Monochromator energy resolution: currently 200 meV for the full photon energy range (design resolving power E/DE up to 15 000) |
| Pulse duration: 30 fs rms |
| Repetition Rate: 100 Hz |
| UHV 4-circle diffractometer |
|---|
| Theta range: -95 to 95 deg |
| Azimuth range: -45 to 45 deg |
| Tilt range: -15 to +15 deg |
| 2Theta range: 0 to 180 deg |
| Temperature at the sample: 25 K to room temperature |
Pump laser parameters
| Furka pump laser |
|---|
| NIR/Visible: 800, 400 & 266 nm with up to 100 mJ/cm2 |
| OPA: 1.2 to 2.5 um with up to 300 uJ per pulse |
| Thz: generation with various organic crystals available, e.g, peak field with OH1 about 200 KV/cm |
RIXS parameters
| Furka RIXS spectrometer |
|---|
| combined resolving power : currently 200 meV for the full photon energy range (design resolving power E/DE up to 15 000) |
| 2D Cmos detector |
| 2theta range: 140 to 50 deg |
