1  Introduction1.1  Kyoto University Critical Assembly1.2  Accelerator-Driven System2  Subcriticality2.1  Feynman-a and Rossi-a Methods2.2  Power Spectral Analyses2.3  Beam Trip and Restart Methods2.4  Conclusion3  Reactor Kinetics3.1  a-Fitting Method3.2  Pulsed-Neutron Source Method3.3  Inverse Kinetic Method3.4  Conclusion4  Effective Delayed Neutron Fraction4.1  Dependency of External Neutron Source4.2  Measurement4.3  Evaluation of beff/L4.4  Neutron Generation Time4.5  Conclusion5  Neutron Spectrum5.1  Subcritical Multiplication Factor 5.2  Threshold Energy Reactions5.3  Spectrum Index5.4  Spallation Neutrons5.5  Conclusion6  Nuclear Transmutation of Minor Actinide6.1  Integral Experiments at Critical State6.2  ADS Irradiation at Subcritical State6.3  Conclusion7  Neutronics of Lead and Bismuth 7.1  Sample Reactivity Worth Experiments 7.2  Monte Carlo Analyses7.3  Sensitivity7.4  Uncertainty 7.5  Conclusion8  Sensitivity and Uncertainty of Criticality 8.1  Experimental Settings8.2  Criticality 8.3  Benchmarks 8.4  Conclusion Appendix Experimental Benchmarks on ADS at KUCA  1  Experimental Settings of ADS Benchmarks 2  235U-Fueled and Pb-Bi-Zoned ADS Core3  235U-Fueled and Pb-Zoned ADS Core4  235U-Fueled ADS Core in Medium-Fast Spectrum 5  232Th-Fueled ADS Core