DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES
MEC Home | Overview | Specifications | Schematic | Components | XRD Platform | Laser Characteristics | Standard Configurations | Publications | MEC Data Analysis | VISAR Analysis
A comprehensive overview of the MEC instrument is published inJournal of Synchrotron Radiation, 22, (2015).
MEC Long Pulse Laser System The MEC long pulse laser will be located within the MEC hutch. It will have two arms of 25J each per pulse at 527 nm with a variable temporal shape and pulse width of 2-20ns. A customized Continuum Agilite laser operating at 1053 nm will provide the variable pulse with and shape. Its output will be spatially filtered and image relayed to seed a pair of 25 mm diameter Nd:phosphate glass rod amplifiers. The output of the 25 mm rods will be split into two arms, and each arm will be further amplified to 25J. The beams will be focused at the MEC target chamber using refractive lenses and phase plates.
MEC Short Pulse Laser System The short pulse laser will be a Chirped Pulse Amplified Ti:Sapphire laser, laser at 800nm, with pulse length as short as 35fs, and pulse energies up to 120mJ. It will consist of a master oscillator, pulse strecher and regenerative amplifier, multipass amplifier and a vacuum compressor. The laser will be located within the MEC hutch.
The MEC vacuum target chamber is an octagon with diameter of approximately 2.5m, made out of 1inch Aluminum. It will provide a vacuum of up to 10-6 millibar. It has 10 top port, 8 side port, and 6 doors, all oriented towards target chamber. It contains a Aluminum breadboard of approximately 2m diameter, with a 1inch ¼-20 bolt pattern. In the middle of the chamber there is a motorized target alignment stage with 6 degrees of freedom.
The instrument can image phenomena with spatial resolution of hundreds of nanometer
and temporal resolution better than 100 femtoseconds. It was specifically designed for studies relevant to
High Energy Density Science, such as shock fronts, phase transitions, void collapses, etc. It has the capability to perform ptychographic determination of the X-ray illumination that is used in the phase contrast imaging experiments. The
imaging can be combined with X-ray diffraction for simultaneous structure determination of the imaged samples and phenomena.
SLAC National Accelerator Laboratory, Menlo Park, CA
Operated by Stanford University for the U.S. Dept. of Energy