G. Hays

TL;DR: The Linac Coherent Light Source free-electron laser has achieved coherent X-ray generation down to a wavelength of 1.2 A and at a brightness that is nearly ten orders of magnitude higher than conventional synchrotrons.

TL;DR: Very low-emittance measurements made at low bunch charge, and a few femtosecond bunch length produced by the LCLS bunch compressors, show the possibilities of generating hundreds of GW at 1.5 A x-ray wavelength and nearly a single longitudinally coherent spike at 2-fs duration.

TL;DR: In this paper, the relative arrival time between an optical pulse and a soft x-ray pulse from a free-electron laser was measured by observing the change in optical reflectivity induced through the absorption of a fraction of the xray pulse.

TL;DR: A description of the Matter in Extreme Conditions instrument at the Linac Coherent Light Source is given and recent scientific highlights illustrate phase-contrast imaging of shock waves, X-ray Thomson scattering andX-ray diffraction of shocked materials.

TL;DR: The soft x-rays materials science instrument is the second operational beamline at the linac coherent light source x-ray free electron laser and features a grating monochromator as well as bendable refocusing mirrors.