Accelerator-Driven System at Kyoto University Critical Assembly

ISBN-13: 9789811603464 / Angielski / Miękka / 2021 / 352 str.

Cheol Ho Pyeon

Spis treści

1  Introduction

1.1  Kyoto University Critical Assembly

1.2  Accelerator-Driven System

2  Subcriticality

2.1  Feynman-a and Rossi-a Methods

2.2  Power Spectral Analyses

2.3  Beam Trip and Restart Methods

2.4  Conclusion

3  Reactor Kinetics

3.1  a-Fitting Method

3.2  Pulsed-Neutron Source Method

3.3  Inverse Kinetic Method

3.4  Conclusion

4  Effective Delayed Neutron Fraction

4.1  Dependency of External Neutron Source

4.2  Measurement

4.3  Evaluation of beff/L

4.4  Neutron Generation Time

4.5  Conclusion

5  Neutron Spectrum

5.1  Subcritical Multiplication Factor 

5.2  Threshold Energy Reactions

5.3  Spectrum Index

5.4  Spallation Neutrons

5.5  Conclusion

6  Nuclear Transmutation of Minor Actinide

6.1  Integral Experiments at Critical State

6.2  ADS Irradiation at Subcritical State

6.3  Conclusion

7  Neutronics of Lead and Bismuth 

7.1  Sample Reactivity Worth Experiments 

7.2  Monte Carlo Analyses

7.3  Sensitivity

7.4  Uncertainty 

7.5  Conclusion

8  Sensitivity and Uncertainty of Criticality 

8.1  Experimental Settings

8.2  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 Core

3  235U-Fueled and Pb-Zoned ADS Core

4  235U-Fueled ADS Core in Medium-Fast Spectrum 

5  232Th-Fueled ADS Core 

O autorze

Cheol Ho Pyeon is an associate professor at the Institute for Integral Radiation and Nuclear Science, Kyoto University, Japan. He received his Ph.D. from the Department of Fundamental Energy Science, Kyoto University. He joined the Research Reactor Institute of Kyoto University as an assistant professor in 2002 and was appointed to his current position in 2012. He contributes to the Journal of Nuclear Science and Technology (JNST), published by the Atomic Energy Society of Japan, as the vice editor-in-chief. He was honored with the JNST Most-Cited Article Award in 2014 and 2015.

Blurb

This open access book is a unique compilation of experimental benchmark analyses of the accelerator-driven system (ADS) at the Kyoto University Critical Assembly (KUCA) on the most recent advances in the development of computational methods. It is devoted especially to nuclear engineers and scientists. Readers will find a detailed description of advanced measurement techniques and calculation methodologies for the ADS with 14 MeV neutrons and high-energy neutrons (with combined use of 100 MeV protons and Pb-Bi target) at KUCA. Additionally, experimental results of nuclear transmutation of minor actinides by ADS and at a critical state are included. Readers also have access to benchmarks of specific ADS experiments with raw data in the Appendix. The book is a valuable resource for the ADS experiments at KUCA which are globally recognized as both static and kinetic studies from the point of view of fundamental research.