Development of a variance reduction scheme in the serpent 2 Monte Carlo code

Jaakko Leppänen (Corresponding author), Tuomas Viitanen, Olli Hyvönen

Research output: Contribution to conferenceConference articleScientificpeer-review

Abstract

This paper presents the weight-window based variance reduction scheme recently implemented in the Serpent 2 Monte Carlo particle transport code. Importances used for forming the weight-window boundaries are obtained from a super-imposed mesh, which can be produced using external calculation tools or a built-in light-weight solver based on the response-matrix method. The methodology is introduced and demonstrated by two examples: 1) radiation shielding calculation in a spent fuel transport cask with weight-window mesh produced by SCALE / MAVRIC, and 2) ex-core neutron dosimetry calculation with the internal light-weight solver. In both cases the use of variance reduction results in orders of magnitude increase in computational performance without introducing any biases in the results. The work is part of an on-going effort to expand the use of Serpent from its traditional applications in reactor physics to new fields, such as radiation transport and fusion neutronics.
Original languageEnglish
Number of pages7
Publication statusPublished - 2017
EventInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017 - Jeju, Korea, Republic of
Duration: 16 Apr 201720 Apr 2017

Conference

ConferenceInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017
Abbreviated titleM&C 2017
CountryKorea, Republic of
CityJeju
Period16/04/1720/04/17

Fingerprint

Radiation shielding
Spent fuels
Dosimetry
Neutrons
Fusion reactions
Physics
Radiation

Cite this

Leppänen, J., Viitanen, T., & Hyvönen, O. (2017). Development of a variance reduction scheme in the serpent 2 Monte Carlo code. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, Jeju, Korea, Republic of.
Leppänen, Jaakko ; Viitanen, Tuomas ; Hyvönen, Olli. / Development of a variance reduction scheme in the serpent 2 Monte Carlo code. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, Jeju, Korea, Republic of.7 p.
@conference{719bd2513abc4438b38354fb8ed6185b,
title = "Development of a variance reduction scheme in the serpent 2 Monte Carlo code",
abstract = "This paper presents the weight-window based variance reduction scheme recently implemented in the Serpent 2 Monte Carlo particle transport code. Importances used for forming the weight-window boundaries are obtained from a super-imposed mesh, which can be produced using external calculation tools or a built-in light-weight solver based on the response-matrix method. The methodology is introduced and demonstrated by two examples: 1) radiation shielding calculation in a spent fuel transport cask with weight-window mesh produced by SCALE / MAVRIC, and 2) ex-core neutron dosimetry calculation with the internal light-weight solver. In both cases the use of variance reduction results in orders of magnitude increase in computational performance without introducing any biases in the results. The work is part of an on-going effort to expand the use of Serpent from its traditional applications in reactor physics to new fields, such as radiation transport and fusion neutronics.",
author = "Jaakko Lepp{\"a}nen and Tuomas Viitanen and Olli Hyv{\"o}nen",
year = "2017",
language = "English",
note = "International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, M&C 2017 ; Conference date: 16-04-2017 Through 20-04-2017",

}

Leppänen, J, Viitanen, T & Hyvönen, O 2017, 'Development of a variance reduction scheme in the serpent 2 Monte Carlo code' Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, Jeju, Korea, Republic of, 16/04/17 - 20/04/17, .

Development of a variance reduction scheme in the serpent 2 Monte Carlo code. / Leppänen, Jaakko (Corresponding author); Viitanen, Tuomas; Hyvönen, Olli.

2017. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, Jeju, Korea, Republic of.

Research output: Contribution to conferenceConference articleScientificpeer-review

TY - CONF

T1 - Development of a variance reduction scheme in the serpent 2 Monte Carlo code

AU - Leppänen, Jaakko

AU - Viitanen, Tuomas

AU - Hyvönen, Olli

PY - 2017

Y1 - 2017

N2 - This paper presents the weight-window based variance reduction scheme recently implemented in the Serpent 2 Monte Carlo particle transport code. Importances used for forming the weight-window boundaries are obtained from a super-imposed mesh, which can be produced using external calculation tools or a built-in light-weight solver based on the response-matrix method. The methodology is introduced and demonstrated by two examples: 1) radiation shielding calculation in a spent fuel transport cask with weight-window mesh produced by SCALE / MAVRIC, and 2) ex-core neutron dosimetry calculation with the internal light-weight solver. In both cases the use of variance reduction results in orders of magnitude increase in computational performance without introducing any biases in the results. The work is part of an on-going effort to expand the use of Serpent from its traditional applications in reactor physics to new fields, such as radiation transport and fusion neutronics.

AB - This paper presents the weight-window based variance reduction scheme recently implemented in the Serpent 2 Monte Carlo particle transport code. Importances used for forming the weight-window boundaries are obtained from a super-imposed mesh, which can be produced using external calculation tools or a built-in light-weight solver based on the response-matrix method. The methodology is introduced and demonstrated by two examples: 1) radiation shielding calculation in a spent fuel transport cask with weight-window mesh produced by SCALE / MAVRIC, and 2) ex-core neutron dosimetry calculation with the internal light-weight solver. In both cases the use of variance reduction results in orders of magnitude increase in computational performance without introducing any biases in the results. The work is part of an on-going effort to expand the use of Serpent from its traditional applications in reactor physics to new fields, such as radiation transport and fusion neutronics.

M3 - Conference article

ER -

Leppänen J, Viitanen T, Hyvönen O. Development of a variance reduction scheme in the serpent 2 Monte Carlo code. 2017. Paper presented at International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2017, Jeju, Korea, Republic of.