XFEL

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  • Diamond hones DOE X-ray laser howitzer to razor-sharp precision

    by 
    Steve Dent
    Steve Dent
    08.12.2012

    The US Department of Energy's SLAC accelerator lab already has a pretty useful X-ray laser -- the Linac Coherent Light Source (LCLS). But, recent modifications to the device have scientists drooling over its new found potential. Using a thin wafer of diamond, the Stanford-run lab filtered the beam to a lone frequency, then amplified it in a process called "self-seeding." That's given the world's most powerful X-ray laser even more punch by tossing out unneeded wavelengths which were reducing its intensity. The tweaks allow scientists across many fields to finesse and image matter at the atomic level, giving them more power to study and change it. According to the lab, researchers who came to observe the experiment from other X-ray laser facilities "were grinning from ear to ear" at the possibility of integrating the tech into their own labs. The SLAC team claims they could still add 10 times more punch to the LCLS with further optimization, putting the laser in a class by itself -- X-ray-wise, anyway.

  • 4.5 million fps microscope camera powered by ultra-fast X-ray flash

    by 
    Terrence O'Brien
    Terrence O'Brien
    08.01.2011

    Remember those rugged gadgets we smashed to bits in super slow-mo? Well that spectacular footage was shot at around 1,500 frames per-second. A new camera system being built for the European XFEL (X-ray Free-Electron Laser) facility will record stunning clips of viruses and cells at an almost unimaginable 4.5 million fps. The camera is, in part, powered by a high speed flash created by the Science and Technology Facilities Council, that blasts its microscopic subjects with ultra-bright X-rays. The flashes themselves last as little as two femtoseconds, or 2x10^-15 seconds for you math nerds out there. When the whole apparatus is fired up in 2015 it could provide amazingly detailed, 3D images of individual molecules and answer some questions about the behavior of viruses and cells.