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SLAC National Accelerator Laboratory
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    Who we are

    We explore radically new ideas with an entrepreneurial mindset.

    Science and User Support Building to the left and Arrillaga Science Center building to the right from above the Main Quad at SLAC's campus.
    • Research

      Get an overview of research at SLAC: X-ray and ultrafast science, particle and astrophysics, cosmology, particle accelerators, biology, energy and technology.

    • X-ray and Ultrafast science icon X-ray & ultrafast science

      Revealing nature’s fastest processes with X-rays, lasers and electrons

    • Physics of the universe science icon Physics of the universe

      Studying the particles and forces that knit the cosmos together

    • Advanced Accelerators science icon Advanced accelerators

      Building smaller, faster, more powerful accelerators for all

    • Science of life science icon Science of life

      Understanding the machinery of life at its most basic level

    • New technologies science icon New technologies

      Inventing new tools for science and society

    • Energy sciences science icon Energy sciences

      Finding clean, sustainable solutions for the world’s energy challenges

    Spotlight

    SLAC science explained

    Cut through the jargon while exploring our research.

    SAGE campers have fun experimenting with a Van de Graff generator
    • Facilities & Centers

      Learn more about the places where science happens at SLAC: our major facilities, institutes and centers.

    • SCIENTIFIC FACILITIES
      • LCLS website

        Linac Coherent Light Source

      • SSRL website

        Stanford Synchrotron Radiation Lightsource

      • FACET-II website

        Facility for Advanced Accelerator Experimental Tests

      • CryoEM website

        Cryogenic Electron Microscopy

    • JOINT INSTITUTES & CENTERS
      • SIMES website

        Stanford Institute for Materials & Energy Science

      • KIPAC website

        Kavli Institute for Particle Astrophysics & Cosmology

      • PULSE website

        Stanford PULSE Institute

      • SUNCAT website

        Center for Interface Science & Catalysis

      • SLAC-Stanford Battery Center

    NSF-DOE Vera C. Rubin Observatory LSST

    SLAC & Stanford build the world’s largest digital camera for the Legacy Survey of Space and Time (LSST).

    A drone photo of Rubin Observatory while taking pictures during the First Look observing campaign
    • Work with Us

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      Apply to become a user of our scientific research facilities and instruments.

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    Join our united workforce.

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    • News & Events

      Get the latest news about the lab, our science and discoveries. Explore SLAC events and learn how to participate.

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      This joint publication of SLAC and Fermilab is your view into the world of particle physics.

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    Spotlight

    SLAC events

    Event attendees listen to a science lecture
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Past Event
public lecture

Photosynthesis: How Plants Build the Air We Breathe – Atom by Atom

Presented by Franklin Fuller. Over billions of years, plants and cyanobacteria changed the Earth’s atmosphere by inhaling carbon dioxide, storing the carbon in solid...

Date Thursday, November 18, 2021
9:00 a.m.  –  10:00 a.m.  PT
Public Lecture poster: picture of movie
Feature

A versatile set of detector building blocks prepares SLAC researchers for a challenging future of X-ray science

The ePix series of detectors is designed to keep pace with ever more demanding experiments at SLAC and elsewhere.

December 14, 2021  ·  8 min read
SLAC’s Chris Kenney holds a 16-module
SLAC Experts

Wah Chiu

Professor at SLAC and Stanford Director of CryoEM and Bioimaging Division at SLAC

Areas of research: Science of life; cryo-EM; bioimaging; RNA structure; cryo-ET of neuronal cells; atomic-resolution cryo-EM; pandemic-related structures

Photo of Professor Wah Chui with a cryo-electron micrcoscope
SLAC Science Explained

Cryogenic electron microscopy (cryo-EM): amazing views of life’s machinery

Taking pictures of tiny, flash-frozen things with electrons is revolutionizing biology and technology. SLAC and Stanford host one of the world’s leading facilities for...

June 1, 2022  ·  6 min read
cryo-EM image of Caulobacter bacterium
SLAC Science Explained

Synchrotrons, the Swiss Army knives of science

The X-rays they produce reveal the secrets of everything from ancient texts to modern pharmaceuticals.

June 1, 2022  ·  4 min read
 A synchrotron is a type of particle accelerator that produces intense beams of light.
SLAC Science Explained

XFELs: Spying on atoms and molecules

Molecular movie-making is both an art and a science; the results let us watch how nature works on the smallest scales.

June 1, 2022  ·  7 min read
Molecular movie filmstrip.
Past Event
SLAC on Tap

Lasers not attached to sharks, ultrafast science and the quantum mechanics of your sunglasses

Join us for the inaugural SLAC on Tap event at The Patio in Palo Alto. SLAC scientist Alan Fry will chat about lasers not...
Date Tuesday, February 26, 2019
6:00 p.m.  –  7:00 p.m.  PT
Location The Patio
Logo
Feature

The United States just got a new X-ray laser toolkit to study nature’s mysteries

With a suite of reimagined instruments, researchers take up scientific inquiries that were out of reach just one year ago. 

August 7, 2025  ·  7 min read
Large metallic machine in a lab, featuring valves, circular bolts, and digital displays with surrounding wires and tubing.
Feature

SLAC researchers help organize community challenge to benchmark molecular simulations with experiments

Ultrafast electrons at SLAC’s LCLS facility resolved the structural changes in a light-activated molecule to determine which simulations work best. 

July 16, 2025  ·  4 min read
Graphic representation of several molecules floating through space, circle of papers representing scientific results
Feature

Researchers track the motion of a single electron during a chemical reaction

They used SLAC’s ultrafast X-ray laser to follow the impact of a single electron moving within a molecule during an entire chemical reaction.

August 20, 2025  ·  4 min read
An illustration of X-rays scattering off the valence electrons surrounding ammonia molecules and getting captured on a detector.
SLAC EXPERTS

Simon R. Bare

Co-Director of Chemistry & Catalysis Division, Stanford Synchrotron Radiation Lightsource (SSRL); Distinguished Staff Scientist, SLAC National Accelerator Laboratory (SLAC)

Areas of research: X-ray absorption spectroscopy, operando catalyst characterization, catalyst structure-property relationships, new methods of catalyst characterization

Portrait of Simon R Bare
News Brief

Researchers use synchrotron X-rays to identify promising candidate in the battle against antibiotic resistance

X-rays unveil new molecular structure details that will help researchers design novel drug therapies to address antibiotic resistant bacteria.

September 12, 2025  ·  4 min read
Image of spherical bacteria
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SLAC National Accelerator Laboratory 
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Menlo Park, CA 94025-7015  
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