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SLAC National Accelerator Laboratory
    • About

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

    • OUR STORY
      • Mission, vision, values
      • History
    • LAB OVERVIEW
      • SLAC at a glance
      • Lab organization
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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
      • For industry partners
      • Research partnerships & tech transfer
      • Technology Innovation
    • CAREERS AT SLAC
      • Job openings
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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
      • Media resources
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    • SLAC EVENTS
      • Public lectures
      • Scientific seminars
      • Community events
    • SYMMETRY MAGAZINE

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

    • EDUCATIONAL PROGRAMS
      • Educational tours
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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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Photograph

Last cryomodule for LCLS-II

Last cryomodule unload, #41 from Fermilab F1.3-06. This one will be one of a few spares for LCLS-II. 

May 19, 2021
Last cryomodule unload, #41 from Fermilab F1.3-06. This one will be one of a few spares for LCLS-II.
Feature

Lab Director Chi-Chang Kao reflects on the past decade as SLAC celebrates 60th anniversary

Under his leadership, the lab diversified its research portfolio, expanded its science impact, advanced major projects, increased collaboration with Stanford and met the challenges...

December 15, 2022  ·  10 min read
A man in a blue shirt and gray suit poses in front of a large scientific apparatus.
Feature

KIPAC Celebrates 10th Anniversary with Open House

After a decade spent studying some of the most puzzling questions in astrophysics, providing research and learning opportunities to more than 100 graduate students...

March 27, 2013  ·  3 min read
Photo - Student's silhouette against a projection screen.
Feature

Perspectives on 10 Years of Discovery With Fermi

By capturing the most energetic light in the sky, the spacecraft continues to teach us about the mysteries of the universe.

June 11, 2018  ·  3 min read
Fermi scientists Michelson, Atwood and Ritz
Feature

A day in the life of a mountaintop telescope builder

Margaux Lopez is helping prepare the Vera Rubin Observatory for the arrival of the largest digital camera ever built for astrophysics and cosmology.

January 5, 2024  ·  4 min read
Margaux Lopez in front of a telescope building.
Where research happens

Joint institutes & centers

SLAC is known for building big sophisticated machines for teasing out the secrets of the universe. They give researchers new eyes on the world...
Focal plane of the Legacy Survey of Space and Time (LSST) camera.
Past Event
Community Day

STEM Community Day 2024

Thank you to all who joined us this year! 2024 event photos are available here.    STEM Community Day is a fun-filled event...
Date Saturday, October 5, 2024
1:00 p.m.  –  5:00 p.m.  PT
Location SLAC National Accelerator Laboratory
Visitors watch a science demonstration at Community Day
Feature

Trailblazers: Alonzo W. Ashley Fellows pave the way for future scientists and engineers

Four engineers discuss their journeys to working at SLAC and counsel those following in their footsteps.

November 6, 2023  ·  10 min read
Ashley fellows 2023
By the numbers

SLAC at a glance

What is SLAC National Accelerator Laboratory? The numbers tell the tale.

Lab overview

Lab organization

Learn about SLAC’s senior leadership, directorates and core teams below. For an overview of our organizational structure, you can download the interactive PDF org chart.

Sunrise over SUSB building
News Brief

Galaxy clusters yield new evidence for standard model of cosmology

A new study probing the structure and evolution of galaxy clusters shows good agreement with the predictions of standard cosmological models. 

April 3, 2023  ·  2 min read
A cluster of bright galaxies on a black background.
Then and now

Our story

SLAC began in 1962 with construction of a 2-mile-long electron accelerator that would take particle physics to new heights. Today we are known for...
LCLS Coherent X-ray Imaging hutch
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SLAC National Accelerator Laboratory 
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Menlo Park, CA 94025-7015  
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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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