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SLAC National Accelerator Laboratory
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      Learn about our science, people, facilities and partners. Discover our history and vision for the future.

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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

      Find a career, partner with us or apply to use our tools and facilities.

    • PARTNER WITH US
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      • Technology Innovation
    • CAREERS AT SLAC
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      • Life at SLAC
    • USE OUR FACILITIES

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

    • COMING TO SLAC
    • BECOME A SUPPLIER

    Careers at SLAC

    Join our united workforce.

    SLAC staff in main quad
    • News & Events

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

    • NEWS CENTER
      • News archive
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    • SLAC EVENTS
      • Public lectures
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    • SYMMETRY MAGAZINE

      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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Video

What is Dark Matter?

Risa Wechsler, astrophysicist explains: 85% of the matter in the universe is dark matter, a substance that interacts through gravity but doesn't emit light.

July 25, 2024  ·  00:02:24  runtime
Stillframe of LSST video
Video
Feature

Light dark matter is a thousand times less likely to bump into regular matter than previous astrophysical analyses allowed

A SLAC/Stanford study of the population of satellite galaxies orbiting the Milky Way provides new clues about the particle nature of dark matter.

July 11, 2019  ·  6 min read
Dark matter simulation
Feature

SLAC’s Tony Johnson remembers the WWW Wizards and the birth of North America’s first website

This month marks the 30-year anniversary of the first website in North America, launched at SLAC. In this Q&A, one of the Wizards recalls...

December 13, 2021  ·  8 min read
Group photo of SLAC WWW Wizards in an office
Research

New technologies

Modern technology creates new opportunities for society: Just think about how artificial intelligence has changed our cars and cell phone apps.

Neural Nets and Gravitational Lenses
Lab overview

Brochures & fact sheets

Download a variety of fact sheets to learn more about SLAC, our programs and latest scientific discoveries. 

Empty undulator hall
Feature

Secretary of Energy Chris Wright visits SLAC to explore groundbreaking science and technology innovations

He met with SLAC staff and toured the lab’s cutting-edge facilities, diving into world-leading research in X-ray and ultrafast science, artificial intelligence, astrophysics and...

May 28, 2025  ·  5 min read
Secretary Wright Visit LCLS
Feature

What is the universe made of? SLAC experts weigh in on the mysterious force that shapes our cosmic history

Cosmologists Josh Frieman and Risa Wechsler look back on the Dark Energy Survey, sharing how it’s paving the way for Rubin Observatory to dig...

January 23, 2026  ·  9 min read
Josh Frieman and Risa Wechsler
Feature

KIPAC’s future is bright – and full of data

As the SLAC-Stanford institute celebrates its 20th anniversary, three Kavli Institute for Particle Astrophysics and Cosmology researchers share what they’re most excited for in...

October 13, 2023  ·  5 min read
A cluster of bright galaxies on a black background.
Feature

DESI points 5,000 robotic ‘eyes’ at the sky to explore dark energy

The Dark Energy Spectroscopic Instrument begins final testing, setting the stage for a 5-year survey that will analyze the light of 35 million galaxies.

October 28, 2019  ·  7 min read
DESI ‘eyes’
News Brief

A Goldilocks promoter for a silver catalyst

Nickel dopants could improve sustainable production of ethylene oxide, a chemical widely used in industrial manufacturing.

March 17, 2025  ·  3 min read
An illustration of purple balls (oxygen) gather near a nickel atom embedded in a sheet of silver.
STEM rising

Resources for students & educators

At SLAC, we strive to solve real-world problems through science and innovation. Be a part of a growing community in STEM. Find out about our educational and internship programs and participate in our lectures and events.

SAGE Camp 2022-In Person
History

SLAC timeline

See a lab history timeline

Signing the SLAC construction contrast in 1962
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SLAC National Accelerator Laboratory 
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We explore how the universe works at the biggest, smallest and fastest scales and invent powerful tools used by scientists around the globe.

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