(Show results from this date)
(Show results to this date)
*Use spaces between key words, no punctuation needed *Sign In for authenticated content

  • 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?


    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.


    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.

  • Visitor Safety Information

    We hope your visit with us is both safe and enjoyable. Most of the areas you visit at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) will not expose you to radiation above normal background levels. However, you may be exposed to radiation if you enter a Radiologically Controlled Area (RCA) or handle radioactive material.

  • The Department of Energy's
    Thomas Jefferson National Accelerator Facility

    For clarity and consistency, use of the following terms has been standardized: the Department of Energy's Thomas Jefferson National Accelerator Facility, Jefferson Lab, Continuous Electron Beam Accelerator Facility, CEBAF, Low Energy Recirculator Facility, and LERF. Please use the following guidelines:

  • 1984 Department of Energy provides initial funding for research, development and design (August 3)
    1984 Scientists interested in conducting research once the facility is operational form a Users Group