Photon beam parameters
- Photon energy: 6 - 15 keV - up to 24 keV potentially available with parallel beam (without any focusing optics)
- Pulse energy: ≥ 2 mJ - typical at 9.3 keV
- Photons per pulse (at source): ~1 x 1012 - derived from previous field (@ 9.3 keV)
- Pulse duration: 25 fs - estimated. Few fs pulses potentially available
- Focal spot size (FWHM):
- ~3 μm / ~200 nm with KB mirror system
- ~1 mm direct beam for microscopy etc., available up to ~24 keV
- Photons / μm2 (at sample): ~1013 - @6 keV, 200 nm focus. Calculated from experimental data
- Train repetition rate: 10 Hz
- Intra-train repetition rate: 1.1 MHz - 4.5 MHz, 100 kHz, some quasi-arbitrary patterns
- ΔE/E: ~0.2% - estimated
- No. of bunches per train> ≤ 352 - some quasi-arbitrary patterns possible.
Sample delivery systems
In vacuum (upstream, 1 Mpx AGIPD), in Helium (downstream, roadrunner, 4Mpx Jungfrau)
- Liquid jet injector rod: 1⁄2“ nozzle rod with M9x1 mm fine thread nozzle mount compatible with the CXI nozzle rod at LCLS (MPI design), 1200 mm in length.
Additionally, 25mm nozzle rod with M23 fine thread. - Sample injection nozzles (GDVN and DFFN): 3D printed nozzles to produce μm-sized liquid jets. Other nozzle types also possible. Nozzles can be supplied by the SEC group. Please consult with the SEC group prior to proposal submission.
- High viscosity liquid jet: Mounted on nozzle rod. ASU or EuXFEL design.
- Aerosol injector: Aerosol produced by electrospray. Other nebulizers also possible.
- Fixed target sample holder: Various available. Please consult with instrument scientists prior to proposal submission.
- Pressure systems HPLC pumps, syringe pumps, gas-pressurised sample reservoirs.
AGIPD 1 Mpx detection properties
- Number of pixels: 1024 x 1024, 4 quadrants, each 512 x 512 pixels
- Pixel size: 200 μm x 200 μm
- Minimum sample–detector distance: ~125 mm, maximum 200 mm stroke
- Resolution at edge @ 9.3 keV: < 1.8 Å, at minimum distance from sample
- Max sample-detector distance: ~5.5 m
- Hole size: 8 mm. Possibly ~5 mm—large, quadrant configuration tuneable to suit expected signal
Available detectors for microscopy/tomoscopy:
Jungfrau 1 Mpx, Shimadzu HPVX-2
Optical laser system 1 properties
- Wavelength: 800 nm, tuneable from 750 to 850 nm (pulse duration is longer than 15 fs)
- Pulse duration: 15, 50 or 300 fs
- Repetition rate: 564 kHz, higher repetition rates up to 4.5 MHz possible
- Pulse energy: 400 μJ
- Wavelength conversion: SHG, THG, OPA (see footnote), SHG: 375–425 nm, THG: 250–283 nm, OPA: 400–2600 nm
- Spot size (FWHM) ≥ 40 μm
Optical laser system 2 properties
- Wavelength: 1030 nm - no wavelength tuneability
- Pulse duration: 0.85 or 400 ps
- Repetition rate: 564 kHz - higher repetition rates up to 4.5 MHz possible
- Pulse energy: 5 mJ
- Wavelength conversion: SHG, THG, FHG - SHG: 515 nm, THG: 343 nm, FHG: 258 nm
- Spot size (FWHM) ≥ 40 μm
Optical laser system 3 properties (Opolette 355 HE)
- Wavelength: 210 – 2400 nm - OPO output
- Pulse duration: 3 – 7 ns
- Repetition rate: Single shot – 20 Hz
- Pulse energy: 0.5 – 5 mJ - dependent on wavelength
- Spot size (FWHM) ≥ 100 μm
Optical laser system 4 properties (Litron Nano)
- Wavelength: 1064 nm
- Pulse duration: 4 – 6 ns
- Repetition rate: Single shot – 10 Hz
- Pulse energy: 300 mJ
- Wavelength conversion: SHG, THG - SHG: 532 nm, THG: 355 nm
- Spot size (FWHM) ≥ 100 μm
OPA (TOPAS) available at a maximum repetition rate of 564 kHz. Photon Arrival time Monitor (PAM) timing tool availability depending on experimental conditions. In these cases, discussion with instrument scientists before proposal submission is essential.
Please discuss your experimental plans with an SPB/SFX instrument scientist before submitting your proposal. They can assist with updated details, help evaluate the feasibility of your experiment, and provide additional support.
Contacts:
- spb.sfx@xfel.eu
- sample.environment@xfel.eu
- useroffice@xfel.eu