The instrument is operated by the Lawrence Berkeley National Laboratory under funding from the US Department of Energy 's Office of Science. Construction of the instrument was principally funded by the US Department of Energy 's Office of Science, and by other numerous sources including the US National Science Foundation, the UK Science and Technology Facilities Council, France's Alternative Energies and Atomic Energy Commission, Mexico's National Council of Science and Technology, Spain's Ministry of Science and Innovation, by the Gordon and Betty Moore Foundation, by the Heising-Simons Foundation, and by collaborating institutions worldwide.