Precise Neutron Spectrum Control Method Based on Discretized Spatial Spectrum Response Matrix

Abstract

The invention discloses a precise neutron energy spectrum regulation and control method based on a discretize space energy spectrum response matrix. The method comprises the steps that firstly a neutron regulation and control response matrix library is established, when particular regulation and control are carried out, a regulation and control module arrangement scheme is determined according toa regulation and control target, a neutron energy spectrum distribution situation under the scheme is quickly obtained based on the response matrix library, the neutron energy spectrum distribution situation is compared with a regulation and control target, and target energy spectrum distribution is obtained by adjusting the regulation and control module arrangement scheme; transportation calculation is carried out to obtain precise energy spectrum distribution, the precise energy spectrum distribution is compared with the regulation and control target, if the difference is larger, iterative design is carried out again until the difference between the precise energy spectrum distribution of the transportation calculation and the regulation and control target is less than a preset value, and the regulation and control scheme needed by the target neutron energy spectrum is obtained. The precise neutron energy spectrum regulation and control method based on the discretize space energy spectrum response matrix has the advantages that the problem that the neutron energy spectrum needed by the engineering and experiments cannot be precisely established by adopting a traditional regulation and control method depending on artificial experience to repeatedly perform iteration for testing faults is solved, the efficient precise customization of the neutron energy spectrum is achieved, and the advanced nuclear energy system research and development and nuclear technology intercrossed application research are promoted.

Description

technical field [0001] The invention relates to a precise neutron energy spectrum control method. Background technique [0002] The distribution of neutron energy spectrum in advanced nuclear energy system is complex and diverse. Fusion neutron spectrum, spallation neutron spectrum, and fission neutron spectrum cannot cover the neutron spectrum involved in advanced nuclear energy systems, which brings great obstacles to the research and development of advanced nuclear energy systems. [0003] In order to generate a neutron spectrum suitable for an advanced nuclear energy system, it is necessary to develop an efficient neutron spectrum control technology. Starting from the source neutron spectrum and the target neutron spectrum, the geometry, material parameters and layout of the control module are determined. At present, the neutron energy spectrum close to the target is mostly generated through positive regulation. This method obtains the energy spectrum as close as possib...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a precise neutron energy spectrum control method based on a discretized spatial energy spectrum response matrix, so as to solve the problem that it is difficult to accurately control and generate a specified neutron energy spectrum in the prior art

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