Bio
Muhammad Ramzy Altahhan, nicknamed Ramzy, is a Neutronics Analyst with over 12 years of expertise in developing advanced computational methods for nuclear systems. His work bridges theoretical physics and practical engineering to enhance the safety, efficiency, and performance of nuclear facilities. Driven by a vision of nuclear technology as essential for sustainable development, he pioneers computational approaches within nuclear energy to advance and accelerate scientific discovery.
Ramzy earned his Ph.D. in Nuclear Engineering from North Carolina State University in 2021, focusing on advanced adjoint methodologies. His educational journey from Alexandria University in Egypt to leading U.S. institutions provides him with a global perspective on nuclear engineering. Since 2017, he has developed expertise across diverse nuclear systems including MSRs, HTGRs, LFRs, LWRs, and pulsed‑neutron fixed‑source facilities such as the Spallation Neutron Source (SNS). He is currently based in the Neutron Technologies Division (NTD) within the Neutron Science Directorate (NScD) at ORNL.
At NTD, he contributes to design optimization, particle transport, shielding design, CFD, and broader nuclear‑systems analysis, integrating advanced optimization techniques with nuclear transport calculations using state‑of‑the‑art coding frameworks. As a lead developer of computational tools, he applies rigorous verification and validation (V&V) methodologies, code‑to‑code comparison, uncertainty quantification and multiphysics modeling to deliver measurable improvements in reactor and fixed‑source performance, operational efficiency, and safety margins. Passionate about mentoring the next generation, he advances nuclear engineering as an essential field for addressing energy‑security challenges and achieving global development goals.
Professional Experience
- 2025-Present Neutronics Analyst, Neutron Technologies Division (NTD)
- 2022-2024 Post‑Doctoral Research Scholar, North Carolina State University (NCSU)
- 2017-2021 Graduate Research Assistant, NCSU
- 2011-2016 Assistant Teacher, Alexandria University
Education
- Ph.D. , Nuclear Engineering, North Carolina State University — 2021
- M.Sc., Nuclear Engineering, Alexandria University — 2015
- B.Sc. , Nuclear & Radiation Engineering, Alexandria University — 2011