EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS

A Jinaphanh; J Miss; Y Richet; Nicolas Martin; Alain Hébert

EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS

A Jinaphanh, J Miss, Y Richet, Nicolas Martin, Alain Hébert

Research output: Contribution to conference › Paper › peer-review

Abstract

The paper presents a preliminary study on the use of a deterministic adjoint flux calculation to improve source convergence issues by reducing the number of iterations needed to reach the converged distribution in criticality Monte Carlo calculations. Slow source convergence in Monte Carlo eigenvalue calculations may lead to underestimate the effective multiplication factor or reaction rates. The convergence speed depends on the initial distribution and the dominance ratio. We propose using an adjoint flux estimation to modify the transition kernel according to the Importance Sampling technique. This adjoint flux is also used as the initial guess of the first generation distribution for the Monte Carlo simulation. Calculated Variance of a local estimator of current is being checked.

Original language	American English
State	Published - May 2011
Externally published	Yes
Event	International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering - Rio de Janeiro, Brazil Duration: May 8 2011 → May 12 2011

Conference

Conference	International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering
Abbreviated title	M&C 2011
Country/Territory	Brazil
City	Rio de Janeiro
Period	05/8/11 → 05/12/11

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https://inis.iaea.org/collection/NCLCollectionStore/_Public/48/028/48028779.pdf

Cite this

Jinaphanh, A., Miss, J., Richet, Y., Martin, N., & Hébert, A. (2011). EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering , Rio de Janeiro, Brazil. https://inis.iaea.org/collection/NCLCollectionStore/_Public/48/028/48028779.pdf

@conference{f44157708fb844e2952a4bacf218733e,

title = "EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS",

abstract = "The paper presents a preliminary study on the use of a deterministic adjoint flux calculation to improve source convergence issues by reducing the number of iterations needed to reach the converged distribution in criticality Monte Carlo calculations. Slow source convergence in Monte Carlo eigenvalue calculations may lead to underestimate the effective multiplication factor or reaction rates. The convergence speed depends on the initial distribution and the dominance ratio. We propose using an adjoint flux estimation to modify the transition kernel according to the Importance Sampling technique. This adjoint flux is also used as the initial guess of the first generation distribution for the Monte Carlo simulation. Calculated Variance of a local estimator of current is being checked. ",

author = "A Jinaphanh and J Miss and Y Richet and Nicolas Martin and Alain H{\'e}bert",

year = "2011",

month = may,

language = "American English",

note = "International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering , M&C 2011 ; Conference date: 08-05-2011 Through 12-05-2011",

}

Jinaphanh, A, Miss, J, Richet, Y, Martin, N & Hébert, A 2011, 'EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS', Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering , Rio de Janeiro, Brazil, 05/8/11 - 05/12/11. <https://inis.iaea.org/collection/NCLCollectionStore/_Public/48/028/48028779.pdf>

EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS. / Jinaphanh, A; Miss, J; Richet, Y et al.
2011. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering , Rio de Janeiro, Brazil.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS

AU - Jinaphanh, A

AU - Miss, J

AU - Richet, Y

AU - Martin, Nicolas

AU - Hébert, Alain

PY - 2011/5

Y1 - 2011/5

N2 - The paper presents a preliminary study on the use of a deterministic adjoint flux calculation to improve source convergence issues by reducing the number of iterations needed to reach the converged distribution in criticality Monte Carlo calculations. Slow source convergence in Monte Carlo eigenvalue calculations may lead to underestimate the effective multiplication factor or reaction rates. The convergence speed depends on the initial distribution and the dominance ratio. We propose using an adjoint flux estimation to modify the transition kernel according to the Importance Sampling technique. This adjoint flux is also used as the initial guess of the first generation distribution for the Monte Carlo simulation. Calculated Variance of a local estimator of current is being checked.

AB - The paper presents a preliminary study on the use of a deterministic adjoint flux calculation to improve source convergence issues by reducing the number of iterations needed to reach the converged distribution in criticality Monte Carlo calculations. Slow source convergence in Monte Carlo eigenvalue calculations may lead to underestimate the effective multiplication factor or reaction rates. The convergence speed depends on the initial distribution and the dominance ratio. We propose using an adjoint flux estimation to modify the transition kernel according to the Importance Sampling technique. This adjoint flux is also used as the initial guess of the first generation distribution for the Monte Carlo simulation. Calculated Variance of a local estimator of current is being checked.

M3 - Paper

T2 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering

Y2 - 8 May 2011 through 12 May 2011

ER -

EXPLORING THE USE OF A DETERMINISTIC ADJOINT FLUX CALCULATION IN CRITICALITY MONTE CARLO SIMULATIONS

Abstract

Conference

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