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

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    Upcoming public lecture

    Reinventing the way we break down plastic waste

    Thursday, March 26, 2026
    7:00–8:00 p.m. PDT

    Public Lecture: Ozge Bozkurt
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Animation

UED gold melting

This animation shows the results of a recent study at SLAC, in which researchers used a powerful beam of electrons to watch gold melt...

June 26, 2018
UED Gold Melting
Animation

UED gold diffraction

This movie shows the transition of a gold sample from a solid (dotted pattern) to a liquid (ring pattern) after...
June 26, 2018
UED Gold Melting
Illustration

Molecular movie

This illustration shows snapshots of the light-triggered transition of the ring-shaped 1,3-cyclohexadiene (CHD) molecule (background) to its stretched-out 1,3,5-hexatriene (HT) form (foreground). 

April 12, 2019
Molecular Movie in HD Art
Animation

UED Bond Breaking

Animation of a trifluoroiodomethane molecule (carbon shown in black, fluoride in green, iodine in pink) responding to laser light. The...
July 3, 2018
UED Bond Breaking
Animation

Photosystem II 

In photosystem II, the water-splitting center cycles through four stable states, S0-S3. On a baseball field, S0 would be...

May 12, 2020
Photosystem II
Illustration

UED schematic

Schematic of  SLAC’s new apparatus for ultrafast electron diffraction – one of the world’s fastest “electron cameras” – researchers can study motions in materials...

July 10, 2019
UED schematic
Illustration

Dynamic ripples

Researchers used SLAC’s ultrafast electron diffraction (UED) as an electron camera to take snapshots of a three-atom-thick layer of a promising material as it...

July 14, 2020
UED electron camera takes snapshots of dynamic ripples.
Photograph

New undulator hall

The original LCLS undulator system was removed and replaced with two totally new systems that offer dramatic new capabilities. 
July 17, 2020
New undulator hall
Illustration

LCLS-II undulators

The second phase of a major upgrade project is now online at SLAC’S Linac Coherent Light Source (LCLS). On Saturday...
September 14, 2020
SXU
Illustration

Polarons

An illustration shows polarons – fleeting distortions in a material’s atomic lattice ––in a promising next-generation energy material, lead hybrid perovskite.

December 15, 2020
Polarons, bubbles of distortion in a perovskite lattice.
Animation

Polaronic distortions

As this animation shows, polaronic distortions start very small and rapidly expand outward in all directions to a diameter of...
December 15, 2020
Animation of polaronic distortions expanding in an atomic lattice
Animation

Cryoplant flow animation

The linac is equipped with two world-class helium cryoplants.

May 9, 2022
Cryoplant flow animation
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Menlo Park, CA 94025-7015  
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