The CASL organizational structure (see chart) has proven to accommodate necessary program priority changes and risk management actions during CASL’s lifetime, yet possesses a primary structure that is stable and functional. Major features include:

  • Central, integrated management working predominately from a single location at ORNL: Director with full line authority and accountability for all aspects of CASL; Deputy Direct to drive program planning, performance and assessment; Chief Scientist to drive science-based elements; experienced Focus Area Leads and Deputies with responsibility for the core science and engineering elements; and a Collaboration and Ideation Officer responsible for VOCC Project execution and integration across the core elements.
  • Strong science, engineering, applications, and design leadership
  • A commitment to one-roof approach and widespread implementation of state-of-the-art collaboration technology
  • Well-informed and timely decision-making and program integration
  • Independent oversight and review via an external Board of Directors which advises on annual performance goals, tactical and strategic plans, and performance metrics
  • Integrated technical Project Management across CASL for schedule and budget and an integrated operations team, providing clear leadership for environment, safety, and health; finance; program review; business management; quality; and, security
  • Robust technology transfer and partnerships office to ensure efficient, widespread industrial engagement and coordinated management of intellectual property, ensuring that CASL discoveries and VERA will be translated rapidly to commercial applications.
CASL Organizational Structure

The CASL Senior Leadership Team (SLT) consists of the Director, Deputy Director, and Chief Scientist. The SLT is responsible for the CASL strategic plan, management plan, technical program plan, resource-loaded implementation plan, and the successful execution of those plans according to the CASL mission and vision and within predefined scope, schedule, and budget constraints and expectations.

Dr. Jess C. Gehin CASL Director

CASL Director; Dr. Jess Gehin

Dr. Jess Gehin joined the Oak Ridge National Laboratory (ORNL) in 1992 and is the Director of the Consortium for Advanced Simulation of Light Water Reactors (CASL). Previous positions at ORNL include leading Reactor Technology R&D Integration, Senior Program Manager, and Lead of the Reactor Analysis Group. Prior to this position, Dr. Gehin was a Senior R&D staff member performing research primarily in the area of nuclear reactor physics working on projects such as the development of the Advanced Neutron Source Research Reactor, Fissile Material Disposition, and modeling of experiments in the High Flux Isotope Reactor. Dr. Gehin earned a B.S. degree in Nuclear Engineering in 1988 from Kansas State University and M.S. (1990) and Ph.D. (1992) degrees in Nuclear Engineering from the Massachusetts Institute of Technology. Dr. Gehin also holds the position of Joint Associate Professor in the Nuclear Engineering Department and the Bredesen Center for Interdisciplinary Research and Graduate Education at the University of Tennessee.

Research Interests

  • Nuclear reactor physics computational methods for Light Water Reactors (LWRs) and advanced reactor concept development, design, and operations.
  • Advanced nuclear reactor technology development including Fluoride salt-cooled High-temperature Reactor (FHR) and Molten Salt Reactor (MSR) concepts
  • Nuclear fuel cycle systems and options analysis including fuel cycle evaluations to support R&D decisions and technical aspects of thorium-based fuel cycle systems.

Doug Burns CASL Deputy Director

Deputy Director; Doug Burns

Doug Burns is a senior project manager at the INL. He began his career operating reactors for the US Navy, and moved to the INL in 1993 as a risk assessor and safety analyst. Since then, he's completed a series of project and organizational leadership assignments that have included management of CERCLA and RCRA remediation projects at the INL, Rocky Flats, and Mound laboratories, management of special nuclear materials at the INL, and support for licensing of US commercial nuclear power new builds. For the past five years, he's served as the operations manager for the DOE Fuel Cycle Technologies Technical Integration Office. Doug holds a bachelor's degree in geological engineering from New Mexico State University, a master's degree in environmental health engineering from the University of Texas at Austin, and an MBA from Idaho State University. Finally, he's pursuing a PhD in nuclear engineering from Idaho State University with a focus on use of Bayesian probability analysis to support nuclear operations emergency response.

Dr. Paul Turinsky CASL Chief Scientist

Chief Scientist; Dr. Paul Turinsky

Dr. Turinsky is a professor in and former head of, the Department of Nuclear Engineering at North Carolina State University (NCSU). He has 40 years of experience in the nuclear field, some 8 years working directly in the nuclear power industry and 32 years as a faculty member, where he has retained strong interactions with industry and government laboratories. Among his areas of expertise are reactor core physics, development of core analysis methods in support of routine operations and nuclear safety analysis, nuclear fuel management optimization, V&V and UQ, and management of R&D on fuel and reactivity control materials products and nuclear safety-related simulation capability.