AMO Specifications
AMO Scientific Capabilities
Scientific Application | Atomic, Molecular and Optical Science |
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Techniques |
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Sample Environment |
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Photon Beam Properties
Focusing Capability | Elliptically bent Kirkpatrick-Baez mirrors |
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Beam Size at Sample | ≥ 1 µm at interaction region |
Energy Range | 480-2000 eV |
Energy Resolution ΔE/E | ~0.5-1% (inherent FEL Bandwidth) |
(No monochromator) | |
Photon Flux | ≤ 1 x 1013 photons/pulse |
Pulse Duration | ~5-300 fs |
Repetition Rate | 10, 30, 60 or 120 Hz |
Polarization | Linear in normal operation. Circular polarization with DELTA undulator possible |
Self-Seeding | Available between 500-1000 eV, with λ/Δλ > 5000 and pulse energy up to 100 μJ. |
Two-Pulse Modes | Possible two-pulse modes are described here. |
Optical Laser Properties
Sample | Pre-Mono | Endstation |
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Laser Power | 20 mJ at 800 nm | 20 mJ at 800 nm |
25 mJ at 800 nm (uncompressed) | 25 mJ at 800 nm (uncompressed) | |
4-5 mJ at 400 nm | 4-5 mJ at 400 nm | |
1 mJ at 266 nm | 1 mJ at 266 nm | |
NA | ~100 µJ at 4-10 microns (~70 µJ for longer wavelengths and ~120 µJ for shorter) | |
NA | ~ 50 µJ at 10-17 microns (~ 40 µJ for longer wavelengths and ~ 70 µJ for shorter) | |
NA | ~ 15 µJ at 75-1500 microns (4 to 0.2 THz) Using LiNbO3 and DAST we have measured energies up to 30 µJ for 0.6 THz peak field and 5 µJ for 2 THz peak fields, but note these are still being developed. | |
Laser Pulse | 35-150 fs at 800 nm | 35-150 fs at 800 nm |
150 ps at 800 nm (uncompressed) | 150 ps at 800 nm (uncompressed) | |
50-100 fs at 400 nm | 50-100 fs at 400 nm | |
50-100 fs at 266 nm | 50-100 fs at 266 nm | |
NA | 100-200 fs at 4-10 microns | |
NA | 100-200 fs at 10-17 microns | |
NA | ~ 1 ps at 75-1500 microns (4 to 0.2 THz) | |
Focusing | 1 mm (1/e2) | 50 µm (1/e2) |
Approximate Laser System Pulse Energies with Wavelength
Diagnostics
Fast Shutter | A fast shutter to quickly turn on or off the beam or to select individual LCLS X-ray pulses. |
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Alignment Laser (Planned) | A class II alignment laser beam coaxial with the FEL beam at the Endstation Position, to facilitate the positioning of samples in the FEL beam. |
4 Jaw Slit | 4 independently controlled B4C slit blades can be used to shape the beam upstream of the KB optics |
Magnetic Bottle Electron Spectrometer | Measures the photon energy and bandwidth of the X-rays with a high efficiency electron spectrometer |
Pulse Energy Monitor | Measures the energy of each pulse |
Beam Screens | Measures position and size of beam in the far field |
AMO CONTACT INFO
Peter Walter
SXD Instrument Scientist
(650) 926-3997
pwalter@slac.stanford.edu
Stefan Moeller
SXD Instrument Scientist
(650) 926-5321
smoeller@slac.stanford.edu
AMO Control Room
AMO LOCATION
