Thomas Zacharia, director of Oak Ridge National Laboratory since July 1, 2017, guides the application of an exceptionally broad set of core capabilities to the solution of compelling problems in science and technology, exploiting ORNL’s signature strengths in materials science and engineering, high-performance computing and computational sciences, neutron science, and nuclear science and technology to deliver mission outcomes for the U.S. Department of Energy and other sponsors.
Chief of Staff
Lindsey Twardy serves as an advisor to the Laboratory Director and helps to integrate leadership across ORNL to fulfill the Lab’s mission objectives and ensure operational effectiveness.
Deputy For Science and Technology (Interim) and Projects
Dr. Moe Khaleel is the Deputy for Projects and Interim Deputy for Science and Technology at Oak Ridge National Laboratory. Most recently, he served as ORNL’s Associate Laboratory Director for Energy and Environmental Sciences. Before joining ORNL in fall 2015 to manage the Laboratory’s Office of Institutional Planning and its Advanced Research Project Agency-Energy program.
Deputy for Laboratory Operations
Alan Icenhour coordinates overall operations and support functions at the Oak Ridge National Laboratory: facilities operations; environment, safety, and health; business operations; security; human resources; communications; and technology transfer. In concert with the Deputy Director of Science and Technology, he supports the Laboratory Director in the planning, integration, and execution of Laboratory-level initiatives.
Jeff is Senior Advisor at ORNL, where he has led a $350 million campus modernization project. He also serves as president of the UT-Battelle Development Corporation, an entity established to develop privately constructed facilities at ORNL. Jeff received a degree in ceramic engineering from Ohio State University.
Associate Laboratory Director for Neutron Sciences
Ken Andersen brings extensive experience to the neutron scattering research and user programs at ORNL. He joined ORNL from the European Spallation Source in Sweden, where he led the Neutron Instruments Division and oversaw the selection and construction of instruments from conceptual development through design, procurement, installation and commissioning. Andersen previously led the Neutron Optics Laboratory at Institut Laue Langevin and has commissioned and operated neutron scattering instruments at both ILL and the ISIS Neutron and Muon Source at the Rutherford Appleton Laboratory in the United Kingdom.
Chief Financial Officer
Chief Financial Officer for UT-Battelle since April 2011, Scott received a B.S. from Concord College (now Concord University) and an MBA from Auburn University. He is also a certified public accountant. Before joining UT-Battelle as Chief Audit Executive in 2000, Scott served as Chief Audit Officer for Oak Ridge Associated Universities and as an auditor for the U.S. Department of Energy’s Office of Inspector General.
Acting Associate Laboratory Director for Physical Sciences
Dr. Phil Britt is the Acting Associate Laboratory Director for the Physical Sciences Directorate at Oak Ridge National Laboratory. In his role as ALD, Dr. Britt pursues excellence across PSD’s broad physical sciences portfolio, with particular emphases on quantum materials; structural materials and alloys; soft materials; nanoscience; and applications of materials and chemistry in energy and security. He leads four research divisions: Materials Science and Technology, Chemical Sciences, Physics, and the Center for Nanophase Materials Science.
Interim Director of Human Resources
Marilyn Foxall is the interim Human Resources (HR) Director at Oak Ridge National Laboratory (ORNL) and oversees the talent acquisition, talent services, labor relations, benefits, diversity, immigration, employee and organizational development, and compensation functions at the Laboratory.
Associate Laboratory Director for National Security Sciences
Dr. Deborah Frincke is the Associate Laboratory Director for the National Security Sciences Directorate at Oak Ridge National Laboratory. Dr. Frincke recently joined ORNL from the National Security Agency, where she served as the Director of Research. Prior to the NSA, she worked at Pacific Northwest National Laboratory as the Chief Scientist for Cybersecurity from 2004-2011.
Director, Second Target Station Project
John Haines is director of the Second Target Station Project Office. He brings more than 30 years of experience leading project teams for technologically challenging systems and projects to his post at the laboratory. Before assuming his current position, John held leadership posts at the European Spallation Source, most recently managing the ESS construction project. He also served as the target division head, manager of the Target Station Subproject and associate director for ES&H and Quality.
Director of Communications
As Director of Communications, David is responsible for external and internal communications, community relations, and protocol visits for Oak Ridge National Laboratory.
Exascale Computing Project Director
Doug has more than three decades of experience in conducting and leading applied R&D in computational applications designed to simulate complex physical phenomena in the energy, defense, and manufacturing sectors.
Chief Audit Executive
Gail leads the Internal Audit Directorate, which is responsible for all audit activities and the staff concerns program at ORNL. The organization provides independent, objective assurance and consulting services that are designed to support and improve the effectiveness of risk management, control, and governance processes through evaluations of all ORNL management systems, processes, and programs.
David is the General Counsel at the Oak Ridge National Laboratory and Secretary of UT-Battelle, LLC. He has 20 years of legal experience, primarily in the areas of environmental, safety and health law; nuclear safety and radiological protection; security (including physical and information/cyber security); corporate law and governance; and fraud and the civil False Claims Act. David has served as primary legal counsel to various ORNL organizations, committees and projects, and routinely advises senior management regarding regulatory compliance, risk management and public relations.
Associate Laboratory Director for Fusion and Fission Energy and Science
Kathy McCarthy, Associate Laboratory Director for the Fusion and Fission Energy and Science Directorate, joined ORNL after three years as vice president for science and technology and laboratory director for the Canadian Nuclear Laboratories, where she oversaw a staff of 650 and grew the labs’ commercial work. She previously held a variety of engineering and leadership roles at Idaho National Laboratory, including director of domestic programs in INL’s Nuclear Science and Technology Directorate, director of the Light Water Reactor Sustainability Program Technical Integration Office, and national technical director for the Systems Analysis Campaign for DOE Nuclear Energy’s Fuel Cycle R&D Program.
Associate Laboratory Director for Computing and Computational Sciences
Jeff serves as Associate Laboratory Director for Computing and Computational Sciences. A theoretical chemist and software developer, he joined ORNL in 2002 as Director of the Computer Science and Mathematics Division. The R&D 100 Award recipient holds B.A. degrees in chemistry and mathematics from Malone College (Canton, Ohio) and a Ph.D. in physical chemistry from Texas A&M University.
Director for Environment, Safety, and Health
John leads the Environment, Safety, and Health Directorate at Oak Ridge National Laboratory. John is an environmental engineer with approximately 30 years of ES&H experience within the U.S. Department of Energy complex. He worked in DOE’s national nuclear security and environmental cleanup programs before joining ORNL in 2004.
Director of Facilities and Operations
Jimmy is Director of the Facilities and Operations Directorate at the Oak Ridge National Laboratory in Oak Ridge, Tennessee. He manages seven divisions that provide critical laboratory support services. These include facility operations, laboratory protection, engineering and construction management, materials fabrication, site services, logistical functions, and craft services.
Associate Laboratory Director, Energy Science and Technology
As ORNL’s Associate Laboratory Director (ALD) for the Energy Science and Technology Directorate, Dr. Xin Sun leads a $296 million research portfolio focused on translating science into solutions for the most critical problems facing society at the nexus of energy and security.
Associate Laboratory Director for Isotope Science and Engineering
Associate Laboratory Director Dr. Balendra Sutharshan, who joined ORNL in 2021, leads the Isotope Science and Engineering Directorate (ISED), which is comprised of two research divisions (Radioisotope Science and Technology, and Enrichment Science and Engineering) and one operating division (Nonreactor Nuclear Facilities).
Associate Laboratory Director for Biological and Environmental Systems Science
As ORNL’s Associate Laboratory Director (ALD) for Biological and Environmental Systems Science, Dr. Stan Wullschleger leads a $107 million research portfolio targeting the convergence of biology, ecology, engineering, data discovery, physical sciences, and computing to advance U.S. competitiveness in the global bioeconomy and Earth system sustainability.