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  • Please use the sections below to find the correct department to address your concerns.

  • The labs annual plan helps guide the lab and it's management as a world-leading research institution for exploring the nature of matter in depth, providing unprecedented insight into the details of the particles and forces that build our visible universe inside the nucleus of the atom.

  • Rolf Ent came to Jefferson Lab in 1993 as a Hall C scientist and adjunct professor at Hampton University. Rolf served as experimental group leader of the Nuclear and High-Energy Physics (NuHEP) Center at Hampton University from 1996-2001, and served as Hall C Leader from 2002-2006. He then served as the 12 GeV Upgrade Science lead at Jefferson Lab until 2009, and became associate director for experimental nuclear physics in 2011. He served on the Nuclear Science Advisory Committee from 2006-2008.  Rolf received his Ph.D. from the Free University of Amsterdam in 1989.

  • As Legal Counsel for the Thomas Jefferson National Accelerator Facility, Rhonda provides all legal advice needed for Jefferson Lab to manage legal exposure and risks. She regularly briefs the Director on potential liabilities and items that affect the Lab.

    Scales joined Jefferson Lab in June 1994 as a staff attorney. She was promoted to Assistant General Counsel for Jefferson Lab and SURA in 1996. In 2001 she was appointed Legal Counsel.

  • Light travels at 186,000 miles per SECOND!

    At nearly the speed of light, CEBAF's electron beam orbits the 7/8 mile track 5 times in about 22 millionths of a second.

    How far would it go in one second?

    FAR!!

    In one second, CEBAF's electron beam would circle the earth 7 1/2 times!!

  • Jefferson Lab's electron beam will be aimed at targets like hydrogen, carbon, gold, and lead. What happens when the beam hits a target?

    Electron Beam

  • Superconductivity allows electricity to flow through a conductor without resistance. At CEBAF this is achieved by cooling the niobium cavities in the accelerator to -456oF.

    WHAT DOES THAT MEAN FOR CEBAF?

    Well, using superconducting technology, CEBAF requires an average of 20 megawatts of power to operate. That's enough power for 16,000 homes.

  • All visible matter in the universe is made from the first generation of matter particles: up quarks, down quarks and electrons.

    Quarks are very social and exist only in groups (hadrons) with other quarks.

  • Absolute zero: defined by scientists as the complete absence of heat. Measured at -273.2° Celsius, 0° Kelvin, and -459.7° Fahrenheit. At absolute zero, molecules stop moving and thus do not generate heat. Absolute zero has never been achieved, though scientists have come within millionths of a degree.

    Accelerator: any machine used to impart large amounts of kinetic energy to charged particles. These particles are used to explore nuclear or sub-nuclear phenomena.

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