Accelerator-Driven System at Kyoto University Critical Assembly.

Format:

Book

Author/Creator:

Pyŏn, Ch'ŏr-ho.

Contributor:

Pyŏn, Ch'ŏr-ho.

Language:

English

Physical Description:

1 online resource (353 pages)

Place of Publication:

Springer Nature 2021

Singapore : Springer Singapore Pte. Limited, 2021.

Language Note:

English

Summary:

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.

Contents:

Intro

Preface

Contents

Contributors

1 Introduction

1.1 Kyoto University Critical Assembly

1.1.1 KUCA Facility

1.1.2 Solid-Moderated and Solid-Reflected Cores

1.1.3 Light-Water-Moderated and Light-Water-Reflected Core

1.1.4 Pulsed-Neutron Generator

1.1.5 Fixed-Field Alternating Gradient Accelerator

1.2 Accelerator-Driven System

1.2.1 Overview of Research and Development

1.2.2 Feasibility Study at KUCA

References

2 Subcriticality

2.1 Feynman-α and Rossi-α Analyses

2.1.1 Experimental Settings

2.1.2 Formulae for Data Analyses

2.1.3 Results and Discussion

2.2 Power Spectral Analyses

2.2.1 Experimental Settings

2.2.2 Formula for Power Spectral Analyses

2.2.3 Results and Discussion

2.3 Beam Trip and Restart Methods

2.3.1 Experimental Settings

2.3.2 Data Analyses Method

2.3.3 Results and Discussion

2.4 Conclusion

3 Reactor Kinetics

3.1 α-Fitting Method

3.1.1 Experimental Settings

3.1.2 Numerical Simulations

3.1.3 Results and Discussion

3.2 Pulsed-Neutron Source Method

3.2.1 Experimental Settings

3.2.2 Results and Discussion

3.3 Inverse Kinetic Method

3.3.1 Theoretical Background

3.3.2 Experimental Settings

3.3.3 Transient Analyses

3.4 Conclusion

4 Effective Delayed Neutron Fraction

4.1 Dependency of External Neutron Source

4.1.1 Experimental Settings

4.1.2 Numerical Simulations

4.1.3 k-Ratio Method

4.2 Measurement

4.2.1 Nelson Number Method

4.2.2 Experimental Settings

4.2.3 Results and Discussion

4.3 Evaluation of βeff/Λ

4.3.1 Experimental Settings

4.3.2 Kinetics Parameters

4.3.3 Results and Discussion

4.4 Neutron Generation Time

4.4.1 Experimental Settings

4.4.2 Results and Discussion

4.5 Conclusion

5 Neutron Spectrum.

5.1 Subcritical Multiplication Factor

5.1.1 Theoretical Background

5.1.2 Characteristics of the Target

5.1.3 Effects of Neutron Spectrum

5.2 Threshold Energy Reactions

5.2.1 Foil Activation Method

5.2.2 Activation Foils

5.3 Spectrum Index

5.3.1 Cd Ratio

5.3.2 In Ratio

5.4 Spallation Neutrons

5.4.1 Neutron Spectrum Analyses

5.4.2 Reaction Rates

5.5 Conclusion

6 Nuclear Transmutation of Minor Actinide

6.1 Integral Experiments at Critical State

6.1.1 Critical Irradiation Experiments

6.1.2 Experimental Analyses

6.1.3 Discussion

6.2 ADS Irradiation at Subcritical State

6.2.1 Experimental Settings

6.2.2 Demonstration of Nuclear Transmutation

6.3 Conclusion

7 Neutronics of Lead and Bismuth

7.1 Sample Reactivity Worth Experiments

7.1.1 Core Configuration

7.1.2 Experimental Settings

7.2 Monte Carlo Analyses

7.2.1 Evaluation Method

7.2.2 Lead Sample Reactivity Worth

7.2.3 Bismuth Sample Reactivity Worth

7.3 Sensitivity Coefficients

7.3.1 Theoretical Background

7.3.2 Lead Isotopes

7.3.3 Bismuth Isotope

7.4 Uncertainty Quantification

7.4.1 Theoretical Background

7.4.2 Lead Isotopes

7.4.3 Bismuth Isotope

7.5 Conclusion

8 Sensitivity and Uncertainty of Criticality

8.1 Experimental Settings

8.1.1 Core Configuration

8.1.2 Reactivity Measurements

8.2 Criticality

8.2.1 Numerical Simulations

8.2.2 Sensitivity and Uncertainty

8.2.3 Results and Discussion

8.3 Benchmarks

8.3.1 Experimental Analyses

8.3.2 Uncertainty

8.4 Conclusion

Appendix A1: Experimental Benchmarks on ADS at Kyoto University Critical Assembly

A1.1 Experimental Settings of ADS Benchmarks

A1.1.1 Core Components

A1.1.2 Atomic Number Density of Core Elements

References.

Appendix A2: 235U-Fueled and Pb-Bi-Zoned ADS Core

A2.1 Pb-Bi Target

A2.1.1 Core Configurations

A2.1.2 Results of Experiments

A2.1.2.1 Reaction Rate Distribution

A2.1.2.2 PNS and Feynman-α Methods

A2.2 Subcriticality Measurements

A2.2.1 Core Configurations

A2.2.2 Results of Experiments

A2.2.3 PNS and Feynman-α Methods

A2.3 Reaction Rates

A2.3.1 Core Configurations

A2.3.2 Reaction Rate Distributions

A2.3.3 Reaction Rates of Activation Foils

Appendix A3: 235U-Fueled and Pb-Zoned ADS Core

A3.1 Core Configurations

A3.1.1 ADS with 14 MeV Neutrons

A3.1.2 ADS with 100 MeV Protons

A3.2 Kinetics Parameters

A3.2.1 ADS with 14 MeV Neutrons

A3.2.1.1 Core Condition at Critical State

A3.2.1.2 Case D1 (4560 HEU Plates)

A3.2.1.3 Case D2 (4400 HEU Plates)

A3.2.1.4 Case D3 (4320 HEU Plates)

A3.2.1.5 Case D4 (4200 HEU Plates)

A3.2.1.6 Case D5 (4080 HEU Plates)

A3.2.1.7 Case D6 (3840 HEU Plates)

A3.2.2 ADS with 100 MeV Protons

A3.2.2.1 Core Condition at Critical State

A3.2.2.2 Case F1 (4560 HEU Plates)

A3.2.2.3 Case F2 (4440 HEU Plates)

A3.2.2.4 Case F3 (4320 HEU Plates)

A3.2.2.5 Case F4 (4200 HEU Plates)

A3.2.2.6 Case F5 (4080 HEU Plates)

A3.2.2.7 Case F6 (3960 HEU Plates)

A3.2.2.8 Case F7 (3840 HEU Plates)

A3.3 Reaction Rates

A3.3.1 Core Configurations

A3.3.2 Reaction Rate Distribution

Appendix A4: 235U-Fueled ADS Core in Medium-Fast Spectrum

A4.1 Core Configurations

A4.1.1 ADS with 14 MeV Neutrons

A4.1.2 ADS with 100 MeV Protons

A4.2 Results of Experiments

A4.2.1 Criticality and Control Rod Worth

A4.2.2 PNS and Feynman-α Methods

A4.3 Kinetic Parameters

A4.3.1 ADS with 14 MeV Neutrons

A4.3.2 ADS with 100 MeV Protons

A4.4 Reaction Rates

A4.4.1 Core Configurations.

A4.4.2 Reaction Rate Distributions

A4.4.3 Reaction Rates of Activation Foils

Appendix A5: 232Th-Fueled ADS Core

A5.1 Core Configurations

A5.2 Results of Experiments

A5.2.1 Reaction Rate Distributions

A5.2.2 PNS and Feynman-α Methods

Notes:

Description based on publisher supplied metadata and other sources.

ISBN:

981-16-0344-8

OCLC:

1244536907

Access Restriction:

Open access Unrestricted online access