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  • Status

    Status

    More information about the status of an electron-ion collider can be found in the documents linked below. In 2018, the National Academies of Sciences, Engineering and Medicine issued a report, “An Assessment of U.S.-Based Electron-Ion Collider Science.” Following the report, the directors of Thomas Jefferson National Accelerator Facility and Brookhaven National Laboratory issued a joint statement of support. More information about the impetus for building an electron-ion collider can be found in the 2015 Long-Range Plan, issued by the Nuclear Science Advisory Committee..

     

  • Benefits

    Benefits

    Beyond sparking scientific discoveries in a new frontier of fundamental physics, an Electron-Ion Collider will trigger technological breakthroughs that have broad-ranging impacts on human health and national challenges. Research on the technologies needed to make this machine a reality is already pushing the evolution of magnets and other particle accelerator components. 
     
    Some of these advances could lead to energy-efficient accelerators, thereby dramatically shrinking the size and operating costs of accelerators used across science and industry for example, to make and test computer chips; to deliver energetic particle beams to zap cancer cells; to study and design improved sustainable energy technologies such as solar cells, batteries, and catalysts; and to develop new kinds of drugs and other medical treatments. New methods of particle detection developed for an EIC could also lead to advances in medical imaging and national security. 
     
    In truth, it’s nearly impossible to predict what will come from the knowledge gained from an EIC. History shows that applications springing from a deeper understanding of matter and fundamental forces things like GPS, microelectronics, and radiological techniques for diagnosing and treating disease often emerge many years after the foundational physics discoveries that make them possible. 
     
    But one thing is certain: Building the experiments that inspire and train the next generation of scientific explorers is essential for maintaining U.S. leadership in nuclear science and for developing the high-tech workforce needed to address some of our nation’s deepest challenges.

     

  • Design

    Design

    "Design"

    The Electron-Ion Collider would consist of two intersecting accelerators, one producing an intense beam of electrons, the other a beam of either protons or heavier atomic nuclei, which are then steered into head-on collisions.

    The accelerators will be designed so that both beams can be polarized to around 70 percent for electrons, protons and light nuclei. Electrons will be able to probe particles from protons to the heaviest stable nuclei at a very wide range of energies, starting from 20–100 billion electron-volts (GeV), upgradable to approximately 140 GeV, to produce images of the particles’ interiors at higher and higher resolution. At least one detector and possibly more would analyze thousands of particle collisions per second, amassing the data required to tease out the smallest effects required for significant discoveries.

    Building the EIC will require the same core expertise that led to the versatility of the polarized proton and heavy ion beams at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, and the unique polarized electron beam properties of the Continuous Electron Beam Accelerator Facility (CEBAF) at Thomas Jefferson National Accelerator Facility. These two Department of Energy laboratories have been collaborating on initial studies and developing designs that make use of key existing infrastructure and capitalize on investments in science and technology. Each design approach would require the development of innovative accelerator and detector technologies to answer the questions described in this brochure.

     

  • Goals

    Goals

    There are many scientific questions that researchers expect an Electron-Ion Collider will allow them to answer. Among them are four main topics of study. 

     

    3D Structure of Protons and Nuclei
    3D Structure of Protons and Nuclei
    Scientists would use the Electron-Ion Collider to take three-dimensional precision snapshots of the internal structure of protons and atomic nuclei. As they pierce through the larger particles, the high-energy electrons will interact with the internal microcosm to reveal unprecedented details—zooming in beyond the simplistic structure of three valence quarks bound by a mysterious force. Recent experiments indicate that gluons—the glue-like carriers of the strong nuclear force that binds quarks together—multiply and appear to linger within particles accelerated close to the speed of light, and play a significant role in establishing key properties of protons and nuclear matter. By taking images at a range of energies, an EIC will reveal features of this “ocean” of gluons and the “sea” of quark-antiquark pairs that form when gluons split—allowing scientists to map out the particles’ distribution and movement within protons and nuclei, similar to the way medical imaging technologies construct 3D dynamic images of the brain. These studies may help reveal how the energy of the massless gluons is transformed through Einstein’s famous equation, E=mc2, to generate most of the mass of visible matter.
    Solving the Mystery of Proton Spin
    Solving the Mystery of Proton Spin
    The Electron-Ion Collider would be the world’s first polarized electron-proton collider where both the electron and proton beams have their spins aligned in a controllable way. This polarization makes it possible to make precision measurements of how a proton’s constituent quarks and gluons and their interactions contribute to the proton’s intrinsic angular momentum, or spin. Spin influences the proton’s optical, electrical, and magnetic characteristics and makes technologies such as MRI scanning work, but its origin has eluded physicists ever since experiments in the 1980s revealed that quarks can account for only about a third of the total spin. More recent experiments show that gluons make a significant contribution, perhaps even more than the quarks. An Electron-Ion Collider would produce definitive measurements of the gluons’ contributions, including how their movements within the proton microcosm affect its overall spin structure—thus providing the final pieces needed to solve this longstanding puzzle.
    Search for Saturation
    Search for Saturation
    Capturing the dynamic action of gluons within protons and nuclei will give scientists a way to test their understanding of these particles’ ephemeral properties. As gluons flit in and out of the vacuum, multiplying and recombining, scientists suspect they may reach a steady state of saturation called a “color glass condensate.” This unique form of nuclear matter gets its name from the “color” charges that mediate the interactions of the strong nuclear force, and the dense, glasslike walls these particles are thought to form in nuclei accelerated to nearly the speed of light, seemingly suspended by the effects of time dilation. Scientists will use the Electron-Ion Collider to search for definitive proof of whether this form of matter exists, and test the limits of gluons’ ability to expand beyond the bounds of a single proton/ neutron inside a nucleus. They’ll also explore the mechanism that keeps gluon growth in check, like a lid clamping down on an overflowing popcorn pot. Precisely measuring the strength of the gluon fields, which constitute the strongest fields found in nature, will tell us how gluons interact with each other and how they contribute to building the bulk of visible matter in the universe today.
    Quark and Gluon Confinement
    Quark and Gluon Confinement
    Experiments at an EIC would offer novel insight into why quarks or gluons can never be observed in isolation, but must transform into and remain confined within protons and nuclei. The EIC—with its unique combinations of high beam energies and intensities—would cast fresh light into quark and gluon confinement, a key puzzle in the Standard Model of physics.
  • About

    About

    The Electron-Ion Collider is a proposed machine for delving deeper than ever before into the building blocks of matter, so that we may better understand the matter within us and its role in the universe around us.

    Learn more about this first-of-its-kind machine in the documents linked below.

     

  • Creative Energy. Supercharged with Science.

    Accelerate your career with a new role at the nation's newest national laboratory. Here you can be part of a team exploring the building blocks of matter and lay the ground work for scientific discoveries that will reshape our understanding of the atomic nucleus. Join a community with a common purpose of solving the most challenging scientific and engineering problems of our time.

     

    Title Job ID Category Date Posted
    Master HVAC Technician 13367 Misc./Trades
    Communications Office Student Intern 13310 Public Relations
    High Throughput Computing (HTC) Hardware Engineer 13197 Computer
    Administrative Assistant - Electron Ion Collider Project 13375 Clerical/Admin
    RF Group Leader 13261 Engineering
    Hall A Technologist/Design Drafter 13285 Engineering
    Vacuum Engineer 13396 Engineering
    DC Power Systems Electrical Engineer 13371 Engineering
    MPGD Development Physicist 13381 Science
    Network Engineer I 13345 Computer
    Project Controls Analyst 13302 Clerical/Admin
    Lead Magnet Engineer 13366 Engineering
    SRF Accelerator Physicist 13359 Science
    Deputy CNI Manager 13378 Computer
    Data Center Operations Manager 13327 Engineering
    ES&H Inspection Program Lead 13323 Environmental Safety
    Geant4 Developer 13214 Computer
    MIS Application Server Administrator 13394 Computer
    Radiation Control Technician 13391 Technology
    Storage Solutions Architect 13238 Computer
    Accelerator Operator 13291 Technology
    IT Project Manager 13340 Clerical/Admin
    Magnet Group Staff Engineer 13370 Engineering
    Project Services and Support Office Manager 13330 Management
    Multimedia Intern 13215 Public Relations
    RadCon Manager 13337 Environmental Safety
    ES&H Department Head 13338 Engineering
    Mechanical Engineer III 13140 Engineering
    DC Power Group Leader 13380 Engineering
    HPDF Project Director 13373 Computer
    CIS Postdoctoral Fellow 13102 Science
    Fusion Project Technician 13389 Misc./Trades
    Magnet Group Mechanical/Electrical Designer 13388 Misc./Trades
    Scientific Data and Computing Department Head 13383 Computer
    Survey & Alignment Technician (Metrology) 13385 Misc./Trades
    Electrical Engineer (Sustainability) 13364 Engineering

    A career at Jefferson Lab is more than a job. You will be part of “big science” and work alongside top scientists and engineers from around the world unlocking the secrets of our visible universe. Managed by Jefferson Science Associates, LLC; Thomas Jefferson National Accelerator Facility is entering an exciting period of mission growth and is seeking new team members ready to apply their skills and passion to have an impact. You could call it work, or you could call it a mission. We call it a challenge. We do things that will change the world.

    Welcome from Stuart Henderson, Lab Director
    Why choose Jefferson Lab
    • PASSION AND PURPOSE
      Middle School Science Bowl competitors huddle together to brainstorm the answer.
    • PASSION AND PURPOSE
      Local teachers share ideas for a classroom activity with other teachers during Teacher Night.
    • PASSION AND PURPOSE
      Two young learners hold up a model of the atom during Deaf Science Camp.
    • PASSION AND PURPOSE
      Staff Scientist Douglas Higinbotham snaps a selfie with some of the postdoc students he is mentoring.

    At Jefferson Lab we believe in giving back to our community and encouraging the next generation of scientists and engineers. Our staff reaches out to students to advance awareness and appreciation of the range of research carried out within the DOE national laboratory system, to increase interest in STEM careers for women and minorities, and to encourage everyone to become a part of the next-generation STEM workforce. We are recognized for our innovative programs like:

    • 1,500 students from 15 Title I schools engage in the Becoming Enthusiastic About Math and Science (BEAMS) program at the lab each school year.

    • 60 teachers are enrolled in the Jefferson Science Associates Activities for Teachers (JSAT) program at the lab inspiring 9,000 students annually.

    • 24 high school students have internships and 34 college students have mentorships at the lab.

       

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    Meet our people
    • Patrizia Rossi – Deputy Associate Director for Experimental Nuclear Physics

      A strong force in physics shows impact beyond the lab

      With a passion for understanding how the universe works and a curious desire to unfold theories with logic, it’s no wonder that Patrizia Rossi ventured into physics and is now the deputy associate director for Experimental Nuclear Physics at the U.S. Department of Energy’s Thomas Jefferson National Accelerator Facility. With more than 35 years of research experience, her contributions to the scientific field are just as impactful beyond the lab.

      This year, Rossi began serving on the Italian Scientists & Scholars in North American Foundation (ISSNAF) scientific board under the High Patronage of the President of the Italian Republic. Through the ISSNAF, she has been appointed to present an award this upcoming November at the Italian Embassy in Washington, D.C., as the co-chair of the 2023 ISSNAF Young Investigator INFN Bruno Touschek Award for Research in Fundamental Physics.

      “This is a prestigious recognition for young Italian researchers working here in North America, and I’m excited to have the opportunity to present it,” she said. “I enjoy the relationship of working with both countries, because the science community creates a strong link between Italy and the U.S.”

      This award honors the memory of Bruno Touschek for his pioneering work in the fields of elementary particle physics and particle accelerators.

      Rossi’s inspiring contributions don’t stop there. Since 2013, she has been a research professor at George Washington University and the managing editor for the “Reviews” and “Letters to the Editor” sections of the European Physical Journal A (EPJA). She has also served or is serving on many other scientific committees, including the High Energy Physics Advisory Panel (HEPAP) and the Nuclear Science Advisory Committee (NSAC). She has co-authored more than 250 refereed journal papers.

      Additionally, she spent many years collaborating on the 12 GeV Upgrade project with her contributions to the paper “Physics with CEBAF at 12 GeV and Future Opportunities,” which highlights accomplishments of the 12 GeV program.

      An Empowering Force for Women in Physics

      Rossi has experienced many memorable moments during her journey; however, her most impactful moment was when she graduated with her physics degree from the University of Rome “La Sapienza” in 1986, a prestigious university for studying physics. She exhibited her resilience due to her passion for the subject. Despite women making up 30% of the program at her university, it was still an uncommon course of study.

      “During this time period, physics was a very niche concentration,” Rossi recited. “I remember people dropping out because of how difficult the program was. So, it felt like a huge accomplishment to be able to graduate with the maximum grade.”

      Unlike the U.S., Italian university programs were more centralized and focused on one aspect of study. Therefore, she chose the program due to her fascination for the subject and because of its strong reputation in nuclear particle physics.

      Rossi stated that over the course of her studies, she had many encouraging mentors, beginning with a high school teacher who was the catalyst that sparked her interest in physics. Among her professors were Nicola Cabibbo, Guido Altarelli and Luciano Maiani, all preeminent figures who inspired her during her time at university.

      The Journey to JLab

      After working at various international labs following her studies, including Laboratori Nazionali di Frascati of INFN, DESY Laboratory in Hamburg, Germany, and the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, Rossi was led to Jefferson Lab in 1993 as a scientific user. Her research centered on the strong force, which is an important focus at Jefferson Lab. In 2012, she was asked to apply for a position at the lab, and she took up the offer.

      “I knew this was going to be a big change with leaving my life back in Italy, but I love a challenge and love what I do here,” she said.

      When she first began her career, she was focused on her own research. But in her role as deputy associate director, she shifted into overseeing and reviewing all experiments in Jefferson Lab’s Experimental Nuclear Physics division to ensure they run in the best way possible to produce high-quality physics results.

      “I have learned to shape my role over time. Ten years ago, it was singularly focused on my own experiments, but over the years, it has diversified and branched out,” Rossi reminisces. “I really love working closely with people here, discussing physics, answering questions, and overall assisting the users with their experiments when I can. Interacting with ambitious and enthusiastic colleagues is a highly rewarding and motivating environment to be in!”

      Rossi’s warm, inviting nature makes sense when you hear her describe herself as a people person. Her day-to-day schedule consists of coming daily to the lab, because she loves the personable interaction with her colleagues. When she isn’t at the lab, she is traveling for work, whether to present research at conferences or to serve in leadership roles for committees.

      Even with an intense, but admirable schedule, she tries to end her workdays with an evening of cooking for friends to relax with good company and homemade food. Her other interests include sailing, bicycling, talking extensively to her daughter Paola (who is currently completing her postdoc on evolutionary biology in Switzerland), and reading every night before bed.

      “No matter the time of night, I need to read at least a page of a book before I sleep, anything from South American to Italian and French literature, as well as essays,” she chuckles. “Recently, I read about the role of many great mathematicians in how they invented and discovered the math that we use today. I enjoy learning about those that are often undervalued, such as Sofya Kovalevskaia, the first woman to receive a Ph.D. in mathematics, who made noteworthy contributions to analysis and partial differential equations.”

      Life Lessons

      Looking back on her career, Rossi says that the most important part to feeling content is making sure that she is fulfilled intrinsically without compromising her values, always maintaining intellectual integrity, and doing what she loves most to the best of her ability. And Rossi's advice to others?

      “Always do what you love and what you have a passion for. You will need to have enthusiasm, perseverance, hard work and remember to never give up on what you want to achieve,” she said. “A commitment to following through on what you say you will do and gaining trust will take you far.”

      Rossi continues to look forward to the future at Jefferson Lab, so that nuclear particle physics research can persist to expand and grow. Her leadership in producing a recent paper, “Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab,” showcases her immense hopes to see potential upgrades to the Continuous Electron Beam Accelerator Facility (CEBAF) in the future.

      By Lauren Weber

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    The Jefferson Lab campus is located in southeastern Virginia amidst a vibrant and growing technology community with deep historical roots that date back to the founding of our nation. Staff members can live on or near the waterways of the Chesapeake Bay region or find peace in the deeply wooded coastal plain. You will have easy access to nearby beaches, mountains, and all major metropolitan centers along the United States east coast.

    To learn more about the region and its museums, wineries, parks, zoos and more, visit the Virginia tourism page, Virginia is for Lovers

    To learn more about life at Jefferson Lab, click here.

     

    We support our inventors! The lab provides resources to employees for the development of patented technology -- with over 180 awarded to date! Those looking to obtain patent coverage for their newly developed technologies and inventions while working at the lab are supported and mentored by technology experts, from its discovery to its applied commercialization, including opportunities for monetary awards and royalty sharing. Learn more about our patents and technologies here.

    • Katherine Wilson
      Katherine Wilson
      Staff Engineer

      “Generally, the mechanical engineers at the lab support the physicists. The physicists have the big ideas about how to support new science, and the engineers figure out how to make that happen.”

    • Ashley Mitchell
      Ashley Mitchell
      SRF Chemistry Technician

      “Chemistry is the art of science and art; you’re manipulating and creating things. We have lots of different recipes to work with.”

    • Ron Lassiter
      Ron Lassiter
      Mechanical Designer

      “Here at the lab you get to see what you’ve worked on. You can hold it in your hands. It’s rewarding to know that you’ve played a part in helping the machine to be successful.”

    • Pashupati Dhakal
      Pashupati Dhakal
      Accelerator Operations

      "Not every day is the same day. Working in research and development, it’s not a one person job."

    • Jian-Ping Chen
      Jian-Ping Chen
      Senior Staff Scientist

      “Every time we solve problems, we contribute. It’s exciting times for new results and discoveries.”

    Jefferson Science Associates, LLC manages and operates the Thomas Jefferson National Accelerator Facility. Jefferson Science Associates/Jefferson Lab is an Equal Opportunity and Affirmative Action Employer and does not discriminate in hiring or employment on the basis of race, color, religion, ethnicity, sex, sexual orientation, gender identity, national origin, ancestry, age, disability, or veteran status or on any other basis prohibited by federal, state, or local law.

    If you need a reasonable accommodation for any part of the employment process, please send an e-mail to recruiting @jlab.org or call (757) 269-7100 between 8 am – 5 pm EST to provide the nature of your request.

    "Proud V3-Certified Company"

    A Proud V3-Certified Company
    JSA/Jefferson Lab values the skills, experience and expertise veterans can offer due to the myriad of experiences, skill sets and knowledge service members achieve during their years of service. The organization is committed to recruiting, hiring, training and retaining veterans, and its ongoing efforts has earned JSA/Jefferson Lab the Virginia Values Veterans (V3) certification, awarded by the Commonwealth of Virginia.

  • The Electron-Ion Collider is a proposed machine for delving deeper than ever before into the building blocks of matter, so that we may better understand the matter within us and its role in the universe around us.