page_title: Advanced Light Source
section_title: ALS-U
hierarchical_section_title: Advanced Light Source / ALS-U
caption_attribution_description: English: A comparison of the electron beam profile between the ALS and ALS-U.
context_page_description: The Advanced Light Source is a research facility at Lawrence Berkeley National Laboratory in Berkeley, California. One of the world's brightest sources of ultraviolet and soft x-ray light, the ALS is the first "third-generation" synchrotron light source in its energy range, providing multiple extremely bright sources of intense and coherent short-wavelength light for use in scientific experiments by researchers from around the world. It is funded by the US Department of Energy and operated by the University of California. In June 2018, Stephen Kevan became the director of the ALS.
context_section_description: A new project called ALS-U is working to upgrade the ALS. Recent accelerator physics breakthroughs now enable the production of highly focused beams of soft x-ray light that are at least 100 times brighter than those of the existing ALS.
  The storage ring will receive a number of new upgrades, as well as a new accumulator ring. The new ring will use powerful, compact magnets arranged in a dense, circular array called a multibend achromat (MBA) lattice. In combination with other improvements to the accelerator complex, the upgraded machine will produce bright, steady beams of high-energy light to probe matter with unprecedented detail.
caption: Comparison of the beam profiles of ALS (A) and ALS-U (B). The highly focused beams of ALS-U will enable new scientific advances.
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