AMO Specifications
AMO Specifications
AMO Scientific Capabilities
| Scientific Application | Atomic, Molecular and Optical Science with ultrafast and ultraintense X-rays at the LCLS |
|---|---|
| Techniques |
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| Sample Environment |
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Photon Beam Properties
| Focusing Capability | Elliptically bent Kirkpatrick-Baez mirrors |
|---|---|
| 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 with >1011 photons/pulse. Please contact a beamline scientist for details. |
| Self-Seeding | Available between 500-1000 eV, with λ/Δλ > 5000 and pulse energy up to 100 μJ. Please contact a beamline scientist for details. |
| Two-Pulse Modes | Possible two-pulse modes are described here. Please contact the beamline scientist for details. |
Optical Laser Properties
| Sample Configurations | Pre-Mono Transmission Sample Chamber | Endstation |
|---|---|---|
| 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)
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| NA |
~ 50 µJ at 10-17 microns
(~ 40 µJ for longer wavelengths and ~ 70 µJ for shorter)
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| 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.
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| Laser Pulse Width | 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 Capability | 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. Closes or opens in <8 ms. The fast shutter is up stream of the first experimental position. |
|---|---|
| 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 effeciency electron spectrometer |
| Pulse Energy Monitor | Measures the energy of each pulse |
| Beam Screens | Measures position and size of beam in the far field |
AMO Links
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
Jeff Aldrich
Area Manager
(650) 926-3895
jaldrich@slac.stanford.edu
AMO Control Room
(650) 926-6260
(650) 926-6261
(650) 926-6265
(650) 926-6266
AMO Location
Near Experimental Hall (NEH), Hutch 1
Complete Instrument Map
