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Center for Advanced Studies of Accelerators (CASA) members pose for a group photo at Jefferson Lab in Newport News, Va., on Wednesday, July 10, 2024. (Aileen Devlin | Jefferson Lab)
Attendees mingle during a coffee break during day one of the Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Virginia Governor Glenn Youngkin Chief of Staff Jeff Goettman, center, looks around Hall A of the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Associate Director for Nuclear Physics of the Office of Science Timothy J. Hallman gives attendees a DOE update during day two of the Jefferson Lab User Organization (JLUO) Annual Meeting on Tuesday, June 27, 2023. (Aileen Devlin | Jefferson Lab)
Quark Quest Program Assistant Gabriella Wilson, left, and Quark Quest attendee Jasmine Peery, right, participate in a design and engineering challenge in the SSC classroom at Jefferson Lab Newport News, Va., Jan. 8, 2025. (Lindsay Cunningham | Jefferson Lab)
Staff Scientist II Ryan Bodenstein chats with attendees inside the LINAC of the accelerator tunnel during the Jefferson Lab 2024 Open House.
Local residents from Hampton Roads, Virginia spent the day touring a Department of Energy national laboratory and learned about physics during the 2024 Jefferson Lab Open House held in Newport News, Va., on Saturday, June 8, 2024. (Kandice Carter | Jefferson Lab)
The event provides the public with an ideal opportunity to explore this world-class research facility and features entry into research areas; demonstrations; and numerous exhibits and hands-on activities. During your visit, you can learn about superconducting materials, supercomputers, particle accelerators, particle detectors, nuclear physics research and much more!
Associate Director for Nuclear Physics of the Office of Science Timothy J. Hallman gives attendees a DOE update during day two of the Jefferson Lab User Organization (JLUO) Annual Meeting on Tuesday, June 27, 2023. (Aileen Devlin | Jefferson Lab)
Associate Director for Nuclear Physics of the Office of Science Timothy J. Hallman gives attendees a DOE update during day two of the Jefferson Lab User Organization (JLUO) Annual Meeting on Tuesday, June 27, 2023. (Aileen Devlin | Jefferson Lab)
Virginia Governor Glenn Youngkin's Chief of Staff Jeff Goettman, right, and other members of the Governor's Policy Office tour Hall A of the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Seem from a JLG Lift is an overhead view of Experimental Hall A at Jefferson Lab in Newport News, Va., on Wednesday, Dec. 20, 2024. (Aileen Devlin | Jefferson Lab)
Hall A is the largest of Jefferson Lab's three experimental halls. It is 174 feet across and 80 feet tall from floor to ceiling. Hall A is outfitted with two primary detector systems – both high-resolution spectrometers and each weighing about 450 tons. The systems act like huge microscopes, allowing scientists to "see" inside an atom. Hall A is used primarily for experiments that study the structure of nuclei, and of protons and neutrons.
Phoebe Sharp, center, chats with the judges about her research during the poster session held during Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Local middle school students partake in the “Stay All Day” activities after being eliminated from the Virginia Regional Science Bowl which was held at Jefferson Lab in Newport News, Va., on Saturday, March 2, 2024. (Photo by Aileen Devlin | Jefferson Lab)
The U.S. Department of Energy (DOE) National Science Bowl® is a nationwide academic competition that tests students’ knowledge in all areas of science and mathematics. Middle and high school student teams from diverse backgrounds are comprised of four students, one alternate, and a teacher who serves as an advisor and coach. These teams face-off in a fast-paced question-and-answer format, being tested on a range of science disciplines including biology, chemistry, Earth science, physics, energy, and math.
Seen from an overhead platform is Experimental Hall D located at Jefferson Lab in Newport News, Va., on Thursday, Feb. 8, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Hall D is dedicated to the operation of a large-acceptance detector for experiments with a broad-band, linearly-polarized photon beam produced by ~12 GeV electrons from CEBAF.
Seen is an overall photograph of the electron gun and the superconducting cryogenics unit inside the Low Energy Recirculator Facility (LERF) on Thursday, Sept. 14, 2023. (Aileen Devlin | Jefferson Lab)
Jefferson lab is developing a plan for future utilization of this facility in a manner that is of maximum benefit to the mission of the laboratory and of the nation.
Hall A/C Post Doctoral Fellow Jimmy Caylor works along the high voltage power supply for the electron calorimeter (ECal) inside Experimental Hall A at Jefferson Lab in Newport News, Va., on Tuesday, Aug. 6, 2024. (Aileen Devlin | Jefferson Lab)
Yellow flowers bloom near the Central Helium Liquefier (CHL) on the campus of Jefferson Lab in Newport News, Va., on Thursday, June 15, 2023. (Aileen Devlin | Jefferson Lab)
Student interns chat with various Jefferson Lab researchers, staff, and users about their work during the Science Education Summer Intern poster session held at the CEBAF Center in Newport News, Va., on Friday, Aug. 4, 2023. (Aileen Devlin | Jefferson Lab)
Members of Virginia Governor Glenn Youngkin's Policy Office including Chief of Staff Jeff Goettman, center, say their farewells after a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Under Secretary of Energy Science and Innovation in the Department of Energy (DOE) Geri Richmond, left, listen as SRF S&T Department Head Rongli Geng, right, chats about niobium cavities during a tour of the SRF Test Lab at Jefferson Lab in Newport News, Va., on Thursday, April 18, 2024. (Aileen Devlin | Jefferson Lab)
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Research and Development Senior Physicist Anne-Marie Valente-Feliciano, right, discusses the research done inside the superconducting radiofrequency (SRF) facility. (Photo by Aileen Devlin | Jefferson Lab)
Quark Quest attendee Jasmine Peery listens to an overview of the Electron Ion Collider (EIC) in CEBAF Center at Jefferson Lab Newport News, Va., Jan. 8, 2025. (Lindsay Cunningham | Jefferson Lab)
Southeastern Universities Research Association (SURA) President and Chief Executive Officer Sean Hearne chats with members of Virginia Governor Glenn Youngkin's Policy Office before a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Yellow flowers bloom near the Central Helium Liquefier (CHL) on the campus of Jefferson Lab in Newport News, Va., on Thursday, June 15, 2023. (Aileen Devlin | Jefferson Lab)
Members of Virginia Governor Glenn Youngkin's Policy Office tour the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Photographed from the back-side are cables from the High Performance Computing (HPC) nodes for the Lattice Quantum Chromodynamics (LQCD) project in the Data Center at Jefferson Lab in Newport News, Va., on Monday, March 26, 2024. (Aileen Devlin | Jefferson Lab)
By combining engineering and operations domain expertise and creative integration of advanced hardware and software, JLab delivers advanced computational solutions that address complex data and analytic challenges.
Working in multidisciplinary teams, JLab connects research to engineering to operations, providing the tools necessary to innovate quickly and field results faster.
Back details of the calorimeter modules stacked inside the main detector of Experimental Hall D located at Jefferson Lab in Newport News, Va., on Thursday, Feb. 8, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Hall D is dedicated to the operation of a large-acceptance detector for experiments with a broad-band, linearly-polarized photon beam produced by ~12 GeV electrons from CEBAF.
How many topics in physics are contained in a simple rainbow produced on the wall (and toilet) by sun shining through a plastic privacy screen?
Well...the light from the sun is composed of many different wavelengths...the distribution of which is dependent on the temperature of the star - which ours is centered on the the yellow. When the the light encounters an optically dense medium (glass or plastic in this case), the light is absorbed by the molecules and passed from molecule to molecule, the probability of which an absorption and emission occurs is described by Feynman's QED. The principle of least action (from D'Alembert and Lagrangian mechanics) finds the maximum probability amplitude, and hence the interaction that occurs, or the direction the light is refracted. The path of light through the medium is dependent on the wavelength and frequency of the light. One can back up to PAM Dirac's relativistic quantum mechanics, ingeniously melded Schrodinger's wave equation and/or Heisenberg's Matrix mechanics with Einstein's relativity, which determined that the only certainty in the universe is the speed of light. Everything else including Newton's fixed stars and time...TIME itself are mutable to make the speed of light constant in every situation. Dirac faced with the actual energy of a particle being the square root of the rest mass and its motion, devised a Hamiltonian that required matricies, later interpreted by Pauli as spin states of particles. Schoedinger and Heisenberg following Bohr's amazing leap of quantized orbits to describe Plancks description of light as quanta....actually they were named by Einstein to describe the photoelectric effect....but Planck needed the quantized description of light to explain the ultraviolet disaster of Rayleigh. Planck was working for the electric company to maximize the light output of municipal utilities at the least cost.... TBC
Seem from a JLG Lift is an overhead view of Experimental Hall A at Jefferson Lab in Newport News, Va., on Wednesday, Dec. 20, 2024. (Aileen Devlin | Jefferson Lab)
Hall A is the largest of Jefferson Lab's three experimental halls. It is 174 feet across and 80 feet tall from floor to ceiling. Hall A is outfitted with two primary detector systems – both high-resolution spectrometers and each weighing about 450 tons. The systems act like huge microscopes, allowing scientists to "see" inside an atom. Hall A is used primarily for experiments that study the structure of nuclei, and of protons and neutrons.
Food catered by MoMo’s Cafe for Jefferson Lab in Newport News, Va., on Friday, Mar. 24, 2023. (Photo by Aileen Devlin | Jefferson Lab)
A flock of deer walk behind a blooming tree on top of the “mounds” at Jefferson Lab in Newport News, Va., on Wednesday, March 13, 2024. (Aileen Devlin | Jefferson Lab)
The “mounds” are a layer of earth over three of the lab's four experimental halls, naturally providing radiation shielding and protection from environmental impacts.
Quark Quest attendee Thuy Nguyen participates in a design and engineering challenge in the SSC classroom at Jefferson Lab Newport News, Va., Jan. 8, 2025. (Lindsay Cunningham | Jefferson Lab)
Artificial light shines through the LCLS-II HE Beamline Bellows, also known as the PrCM bellows, inside the SRF Test Lab at Jefferson Lab in Newport News, Va., on Friday, June 7, 2024. (Aileen Devlin | Jefferson Lab)
From left: Jefferson Lab Director Stuart Henderson, French National Center for Scientific Research’s (CNRS) Director of the Washington Office Sylvette Tourmente, and Hall B 12 GeV Staff Scientist Veronique Ziegler chat inside Experimental Hall B during a tour of Jefferson Lab in Newport News, Va., on Tuesday, April 10, 2023. (Aileen Devlin | Jefferson Lab)
Phoebe Sharp, center, chats with the judges about her research during the poster session held during Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Science Education Summer Student Intern Xavier Ho works on equipment in the vacuum lab inside the Technology and Engineering Development Facility at Jefferson Lab in Newport News, Va., Jul 17, 2024. (Lindsay Cunningham | Jefferson Lab)
Xavier is part of the high school summer intern program.
Seen from a JLB Lift is an overhead view of Experimental Hall C at Jefferson Lab in Newport News, Va., on Wednesday, Jan. 20, 2024. (Aileen Devlin | Jefferson Lab)
Hall C is 150 feet in diameter and 60 feet tall. Hall C houses a High Momentum Spectrometer and has been used extensively for large-installation experiments. These are stand-alone experiments requiring unique or highly specialized detectors, magnets and targeting systems.
Experiments run in Hall C have covered a broad spectrum of topics, including the structure of pions, kaon particle production, excited states of the proton, and duality.
Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Isurumali Neththikumara, center, chats about her research during the Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Research and Development Senior Physicist Anne-Marie Valente-Feliciano, center, discusses the research done inside the superconducting radiofrequency (SRF) facility. (Photo by Aileen Devlin | Jefferson Lab)
Program Director for Experimental Nuclear Physics at National Science Foundation Allena Opper, center, engages with users during her “Negotiation Workshop” during day one of the Jefferson Lab User Organization (JLUO) Annual Meeting held on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Employees begin to install the newest liquid nitrogen dewar during a delivery at Jefferson Lab in Newport News, Va., on Wednesday, Sept. 13, 2023. (Aileen Devlin | Jefferson Lab)
Several years in the making, the liquid nitrogen dewar for the End Station Refrigeration 2 (ESR 2) arrived on the lab campus. The ESR 2 system will feed cryogens to Halls A, B, and C, and it will replace ESR 1 by adding additional capacity to support the MOLLER Experiment.
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Superconducting radiofrequency (SRF) Operations Manager Tony Reilly, left, and SRF Research & Development Senior Physicist Anne-Marie Vlanete-Feliciano, right, chat and answers questions with visitors during the tour. (Photo by Aileen Devlin | Jefferson Lab)
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Research and Development Senior Physicist Anne-Marie Valente-Feliciano, right, discusses the research done inside the superconducting radiofrequency (SRF) facility. (Photo by Aileen Devlin | Jefferson Lab)
Jefferson Lab User Organization (JLUO) Annual Meeting on Monday, June 26, 2023. (Aileen Devlin | Jefferson Lab)
Trees begin to bloom for spring on top of the “mounds” at Jefferson Lab in Newport News, Va., on Wednesday, March 13, 2024. (Aileen Devlin | Jefferson Lab)
The “mounds” are a layer of earth over three of the lab's four experimental halls, naturally providing radiation shielding and protection from environmental impacts.