On this day more than 30 years ago, Jefferson Lab delivered its first continuous electron beams to an experimental hall target! . On July 24, 1994, at 4:45 p.m., electrons pinged a beryllium oxide target in Hall C. This Polaroid shows some of the first beam on target in CEBAF!

What gives a proton its spin?. Yiyu Zhou is helping us find out. He will use the 2025 JSA Postdoc Prize for his work mapping the proton in 3D and revealing more about the particles that make up our universe. 🔗

Meet Hunter, one of our recent @ODU technical interns. From hands-on builds to real-world problem solving, his internship came with plenty of challenges and support. 🎥 to hear how mentorship shaped his experience and why he’s walking away a stronger student and a better person.

Our science isn’t the only thing we take pride in. ✨. Jefferson Lab volunteers recently spent their lunch break cleaning up the spaces that support our work. From the lab to the lawn, we like to keep things tidy.

After weeks of munching milkweed, our caterpillar is ready for a big change. It hangs in a J-shape and forms a chrysalis, beginning its transformation into a butterfly. 🦋.

For AI Day, we're highlighting the recent AI for Hadron Spectroscopy workshop at our lab! Researchers explored how AI can help analyze GlueX and CLAS12 data, tackle complex challenges, and advance our understanding of QCD.

We recently hosted the JLUO Annual Meeting, where scientists shared the latest results from Jefferson Lab experiments and highlighted new CEBAF opportunities. The three-day event brought our community together to connect, collaborate and shape the science ahead.

The strong force holds quarks and gluons together, but what’s the “glue” that binds our teams at Jefferson Lab? Enter our administrative professionals, whose strong force supports science behind the scenes.

For the first time, physicists at @JLab_News measured the probability of the a2 meson being produced by a polarized photon beam hitting a proton target. The rather unassuming particle is playing an important role in the hunt for subatomic oddities. 🔍⚛️.

Butterflies go through one of nature’s most amazing transformations, and we’re showing you the full lifecycle over the next two weeks! Watch a caterpillar hatch and find out what it eats right after being born. 🦋.

📸Each summer, we welcome grad students from @_HamptonU for the HUGS Program at Jefferson Lab. With support from @ENERGY, HUGS helps strengthen the nation’s scientific workforce, one researcher at a time.

On this Independence Day, we celebrate the freedom to innovate, discover and lead. @ENERGY’s National Labs are powering America’s future with science, security and a competitive edge. #DOENationalLabs

Happy 4th of July! In observance of Independence Day, Jefferson Lab is closed on Friday, July 4.

Attention Hampton Roads: We will be conducting our monthly tornado warning siren test at 10:30 a.m. today. No need to take cover if you hear it.

What does the nucleus of an atom look like? We turned nuclear physics data into a first-of-its-kind animation, offering scientists a clear view of the building blocks of matter. Basic science LEADS nuclear physics understanding for @Energy #DOENationalLabs

Smarter accelerators. Less downtime. At @JLab_News, we’re using AI to secure efficient, reliable operations across one of the world’s most advanced scientific machines. Basic science SECURES accelerator performance for @ENERGY. #DOENationalLabs.

A 10-year effort. A first look inside the neutron. A custom-built detector from @JLab_News revealed new details about one of nature’s fundamental particles. Basic science DRIVES nuclear discovery at @ENERGY.

Summer’s here, and we’re cooling off making snowflakes! . Grab some borax, hot water and a pipe cleaner, and try this at home!.

Welcome, Nuclear Physicists: The Jefferson Lab Users Organization annual meeting features announcements of awards, new results, and lab updates, as well as a poster competition for early career scientists and discussions of upcoming experiments carried out with CEBAF.

What’s inside matters. We’re improving the inner surfaces of particle accelerator components to boost performance and cut energy loss. Basic science ADVANCES the tech behind high-efficiency research tools at @ENERGY’s national labs. #DOENationalLabs.