AMO Specifications
AMO Specifications
AMO Scientific Capabilities
Scientific Application | Atomic, Molecular and Optical Science with ultrafast and ultraintense X-rays at the LCLS |
---|---|
Techniques |
|
Sample Environment |
|
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)
|
|
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 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