A Method for Accurately Making Multi-Core Database of Accelerator-Driven Subcritical Reactor

Abstract

The invention discloses a method for accurately manufacturing an accelerator driving sub critical reactor multi-group nuclear database. The method is a comprehensive analysis method of high-efficient and accurate manufacturing of the accelerator driving sub critical reactor multi-group nuclear database and is mainly reflected in two aspects, namely, a key energy group structure and a weighting function of multi-group nuclear database manufacturing. The method comprises the following steps: (1) dividing and combining an energy group boundary of a reaction cross section inflection point of main material of an accelerator driving sub critical reactor through equal common logarithm to confirm a data base energy group structure, and (2) using an iterative method and a least square method in a numerical calculation for reference to design of a sub weighting function, and adopting a method of 'calculating, analyzing, designing, detecting, redesigning and so on'. , and finally obtaining a weight spectrum of an accurate accelerator driving sub critical reactor. The method for accurately manufacturing the accelerator driving sub critical reactor multi-group nuclear database can achieve accurate design of the accelerator driving sub critical reactor multi-group nuclear database, and provides accurate and reliable data support for nuclear analysis of the accelerator driving sub critical reactor.

Description

technical field [0001] The invention discloses a method for making an accelerator-driven subcritical reactor multi-group nuclear database precisely, and the method relates to the fields of reactor physical design and analysis, computer numerical simulation and the like. Background technique [0002] The management and disposal of a large amount of spent fuel and long-lived high-level radioactive waste generated by fission nuclear power plants has always been the focus of social and public attention. How to minimize waste, minimize the amount of high-level radioactive waste and its radiotoxicity generated by the operation of nuclear power plants, and safely dispose of high-level radioactive waste is one of the key issues related to the sustainable development of nuclear energy and affecting the public's acceptance of nuclear energy . [0003] It is generally accepted internationally that ADS (Accelerator Driven Systems) is an ideal long-lived radioactive waste transmutation ...

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Problems solved by technology

In short, none of these nuclear database design methods can achieve accurate nuclear design and analysis of the ADS system

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