Perturbation and sensitivity calculations for time eigenvalues using the Generalized Iterated Fission Probability

被引：9

作者：

Jinaphanh, A. ^{[1
]}

Zoia, A. ^{[1
]}

机构：

[1] Univ Paris Saclay, DEN Serv Etud Reacteurs & Math Appl SERMA, CEA, F-91191 Gif Sur Yvette, France

来源：

ANNALS OF NUCLEAR ENERGY | 2019年 / 133卷 / 678-687期

关键词：

Monte Carlo; Time eigenvalues; Criticality; Sensitivity; Perturbation; IFP; NUCLEAR-DATA; ALPHA-EIGENVALUE; CAPABILITIES; PARAMETERS;

D O I：

10.1016/j.anucene.2019.06.062

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Time eigenvalues emerge in several key applications related to neutron transport problems, including reactor start-up and reactivity measurements. In this context, experimental validation and uncertainty quantification would demand to assess the variation of the dominant time eigenvalue in response to a variation of nuclear data. Attention has been recently drawn to the development of theoretical and numerical tools for a first-order Standard Perturbation Theory (SPT) applied to time eigenvalues, which can be thought of as an extension of the well-known SPT formalism for k-eigenvalues. In this work we present a new Monte Carlo method enabling first-order perturbation and sensitivity analysis for time eigenvalues, based on the Generalized Iterated Fission Probability approach that we have recently introduced. The proposed method is detailed and its accuracy is assessed by considering a few relevant verification tests. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：678 / 687

页数：10

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