Are you ready to master the science driving tomorrow’s clean-energy revolution? This comprehensive textbook fuses cutting-edge molten salt reactor (MSR) engineering with practical Python-powered simulations , guiding you from first principles to full-scale core analysis without the guesswork. • Step-by-step reactor physics —grasp neutron diffusion, transport theory, delayed neutron kinetics, and burnup modeling, all illustrated with well-commented Python notebooks. • Thermal-hydraulics demystified —conquer conductive, convective, and radiative heat transfer in circulating liquid fuels, complete with dimensionless-number scaling. • Chemistry & materials insight —understand redox control, corrosion dynamics, and salt property correlations essential for safe, long-life operation. • Real-world data sets & Monte Carlo methods —run your own stochastic particle simulations and sensitivity analyses on any laptop. • Integrated workflow —bridge nuclear data libraries, custom cross-section processing, and visualization tools for professional-grade results. • Learn by coding —each chapter ends with executable exercises that turn theoretical equations into tangible plots, trends, and design decisions. Whether you’re a nuclear engineer, graduate student, or energy innovator, this singular volume delivers the reactor physics, heat transfer, and computational skills demanded by the next generation of low-carbon power.