ALS-II, a potential soft X-ray, diffraction limited upgrade of the Advanced Light Source

Research output: Contribution to journalArticle


The Advanced Light Source (ALS) at Berkeley Lab has seen many upgrades over the years, keeping it one of the brightest sources for soft x-rays worldwide. Recent developments in magnet technology and lattice design appear to open the door for very large further increases in brightness [1], particularly by reducing the horizontal emittance, even within the space constraints of the existing tunnel. Initial studies for possible lattices will be presented that could approach the soft x-ray diffraction limit around 2 keV in both planes within the ALS footprint. Emerging scientific applications and experimental methods that would greatly benefit from ring based sources having much higher brightness and transverse coherence than present or near future storage ring facilities include nanometer imaging applications, X-ray correlation spectroscopy, diffraction microscopy, holography, ptychography, and resonant inelastic soft X-ray scattering at high resolution.


  • H. Tarawneh
  • C. Steier
  • R. Falcone
  • D. Robin
  • H. Nishimura
  • C. Sun
  • W. Wan
External organisations
  • Lawrence Berkeley National Laboratory
Original languageEnglish
Article number012020
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2014 Jan 1
Publication categoryResearch
Externally publishedYes
Event17th Pan-American Synchrotron Radiation Instrumentation Conference, SRI 2013 - Gaithersburg, MD, United States
Duration: 2013 Jun 192013 Jun 21