Paul K. Kearns has served as Director of the U.S. Department of Energy’s Argonne National Laboratory since 2017. Kearns manages a growing multidisciplinary science and engineering research center with an $831 million diversified research portfolio and more than 3,200 employees, 8,300 facility users, and 1,600 visiting researchers. Kearns served as Argonne Chief Operations Officer from 2010 to 2017.
Megan C. Clifford is Chief of Staff at Argonne National Laboratory. She serves as an advisor to Laboratory Director Paul Kearns to drive forward the laboratory’s vision and stakeholder relationships. Working with leaders across the laboratory, Clifford stewards Argonne’s change initiative to deliver lasting impact through science and technology leadership, research and operations excellence, and people development. She promotes a culture of diversity and inclusion within the laboratory through values-based leadership.
David Gibson leads Argonne’s Environmental, Safety, Health and Quality Directorate. Prior to beginning his role at Argonne, David spent over 21 years at Sandia National Laboratory, where he had responsibilities related to physical plant and day-to-day infrastructure operations including environmental management, occupational safety and health, facilities, safeguards and security, emergency management, logistics, enterprise IT, and engineering services. David holds a Master of Business Administration and a Bachelor of Science, Construction Management, both from the University of New Mexico.
Kawtar Hafidi is Associate Laboratory Director for Physical Sciences and Engineering. She oversees the laboratory’s research programs in physics and high energy physics, materials science, chemical science and engineering, and nanoscience and technology.
Stu Hannay is Chief Information Officer and Senior Director of Argonne National Laboratory’s Business Information Services Directorate. BIS executes a strategy of business transformation through technology processes, platforms and systems including: applications development, delivery, and support; infrastructure; telecommunications; library services; knowledge management; cyber security; and business intelligence to enable data-driven decision-making.
Karen Hellman is Senior Director of Argonne’s Infrastructure Services directorate, which provides strategic site stewardship through infrastructure planning and modernization; project management; facilities management, including nuclear facilities; waste management; site services; and security and emergency management.
Tim Knewitz is Argonne National Laboratory’s Chief Financial Officer and Senior Director of Argonne’s Financial Management and Procurement Services directorate. Tim has extensive experience working with the U.S. Department of Energy and the national lab complex, and is a member of the National Laboratories CFO Executive Council. He was at Sandia National Laboratories for 30 years, where he served as the Chief Financial Officer since 2017. Tim is a Certified Public Accountant. He has Master of Accountancy and Bachelor of Accountancy degrees from New Mexico State University.
Interim Associate Laboratory Director Science & Technology Partnerships and Outreach
Dr. Kriplani serves as Interim Associate Laboratory Director for the Science and Technology Partnerships and Outreach Directorate as well as Interim Director of the Technology Commercialization and Partnerships Division.
Chief Communications Officer/Director of Communications & Public Affairs
Leslie Krohn joined Argonne National Laboratory in 2018 to lead the Communications and Public Affairs division. Prior to working at Argonne, Leslie held leadership roles in communications and marketing at Nielsen, Sara Lee, GE and Accenture. She earned a Master of Science in Integrated Marketing Communication at Northwestern University’s Medill School of Journalism, and a bachelor’s degree in American Studies from the University of Notre Dame.
Julie Nuter is Chief Human Resources Officer and Senior Director of Argonne National Laboratory’s Human Resource Services Directorate. HRS oversees the laboratory’s talent strategy, seeking to attract and retain the people the lab needs to excel; sustain a diverse and inclusive culture that helps the lab succeed and thrive; and inspire the next generation of scientists and engineers through educational programs.
Deputy Laboratory Director for Operations/Chief Operations Officer
Kim Sawyer is responsible for leading and driving the strategies and actions to achieve efficient, effective, and safe operations at Argonne. Leveraging her extensive experience within the national laboratories, the Department of Energy, and the private sector, Kim works with leaders across the laboratory to continuously improve the services that support Argonne’s world-changing science, technology, and engineering.
Rick Stevens is Associate Laboratory Director for Computing, Environment and Life Sciences (CELS). He oversees a research program that connects computing to several areas of inquiry, and heads Argonne’s research initiatives for both exascale computing and computational biology.
Associate Laboratory Director, Photon Sciences, and Director of the APS
Stephen Streiffer is the Interim Deputy Laboratory Director for Science, Associate Laboratory Director for Photon Sciences, and Director of the Advanced Photon Source at Argonne. Photon Sciences consists of the X-ray Science, Accelerator Systems and Advanced Photon Source Engineering Support divisions, which comprise the Advanced Photon Source (APS), the largest scientific user facility in North America; and the Argonne Accelerator Institute.
Dr. Suresh Sunderrajan is the Associate Laboratory Director for the Energy and Global Security Directorate. He leads a team that applies crosscutting expertise in science, engineering, and technology to develop solutions to challenging problems related to energy, manufacturing, and global security.