Impact of nuclear data uncertainties on neutronics parameters of MYRRHA/XT-ADS

Takanori Sugawara; Alexey Stankovskiy; Massimo Sarotto; Gert Van den Eynde; Edouard Malambu Mbala

Impact of nuclear data uncertainties on neutronics parameters of MYRRHA/XT-ADS

Takanori Sugawara, Alexey Stankovskiy, Massimo Sarotto, Gert Van den Eynde, Edouard Malambu Mbala

Research output › peer-review

Abstract

A flexible fast spectrum research reactor MYRRHA able to operate in subcritical (driven by a proton accelerator) and critical modes is being developed in SCK∙CEN. In the framework of IP EUROTRANS programme the XT-ADS model has been investigated for MYRRHA. In this study, the sensitivity and uncertainty analysis was performed to comprehend the reliability of the XT-ADS neutronics design. The calculated sensitivity coefficients for neutronics parameters varied significantly between calculation models. The uncertainties deduced from the covariance data strongly depend on the original covariance data. The calculated nuclear data uncertainties could not meet the target accuracy. To improve uncertainties, the integral experiments in adequate conditions are expedient.

Original language	English
Title of host publication	Nuclear Measurements, Evaluations and Applications - NEMEA-6
Place of Publication	Paris, France
Pages	27-36
Volume	1
State	Published - 11 Aug 2011
Event	Nuclear measurements, Evaluations and Applications - NEMEA-6 - Krakow Duration: 25 Oct 2010 → 28 Oct 2010

Conference

Conference	Nuclear measurements, Evaluations and Applications - NEMEA-6
Country/Territory	Poland
City	Krakow
Period	2010-10-25 → 2010-10-28

Cite this

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title = "Impact of nuclear data uncertainties on neutronics parameters of MYRRHA/XT-ADS",

abstract = "A flexible fast spectrum research reactor MYRRHA able to operate in subcritical (driven by a proton accelerator) and critical modes is being developed in SCK∙CEN. In the framework of IP EUROTRANS programme the XT-ADS model has been investigated for MYRRHA. In this study, the sensitivity and uncertainty analysis was performed to comprehend the reliability of the XT-ADS neutronics design. The calculated sensitivity coefficients for neutronics parameters varied significantly between calculation models. The uncertainties deduced from the covariance data strongly depend on the original covariance data. The calculated nuclear data uncertainties could not meet the target accuracy. To improve uncertainties, the integral experiments in adequate conditions are expedient.",

keywords = "nuclear data, uncertainty, covariance matrix",

author = "Takanori Sugawara and Alexey Stankovskiy and Massimo Sarotto and {Van den Eynde}, Gert and {Malambu Mbala}, Edouard",

note = "Score = 3; Nuclear measurements, Evaluations and Applications - NEMEA-6 ; Conference date: 25-10-2010 Through 28-10-2010",

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TY - GEN

T1 - Impact of nuclear data uncertainties on neutronics parameters of MYRRHA/XT-ADS

AU - Sugawara, Takanori

AU - Stankovskiy, Alexey

AU - Sarotto, Massimo

AU - Van den Eynde, Gert

A2 - Malambu Mbala, Edouard

N1 - Score = 3

PY - 2011/8/11

Y1 - 2011/8/11

N2 - A flexible fast spectrum research reactor MYRRHA able to operate in subcritical (driven by a proton accelerator) and critical modes is being developed in SCK∙CEN. In the framework of IP EUROTRANS programme the XT-ADS model has been investigated for MYRRHA. In this study, the sensitivity and uncertainty analysis was performed to comprehend the reliability of the XT-ADS neutronics design. The calculated sensitivity coefficients for neutronics parameters varied significantly between calculation models. The uncertainties deduced from the covariance data strongly depend on the original covariance data. The calculated nuclear data uncertainties could not meet the target accuracy. To improve uncertainties, the integral experiments in adequate conditions are expedient.

AB - A flexible fast spectrum research reactor MYRRHA able to operate in subcritical (driven by a proton accelerator) and critical modes is being developed in SCK∙CEN. In the framework of IP EUROTRANS programme the XT-ADS model has been investigated for MYRRHA. In this study, the sensitivity and uncertainty analysis was performed to comprehend the reliability of the XT-ADS neutronics design. The calculated sensitivity coefficients for neutronics parameters varied significantly between calculation models. The uncertainties deduced from the covariance data strongly depend on the original covariance data. The calculated nuclear data uncertainties could not meet the target accuracy. To improve uncertainties, the integral experiments in adequate conditions are expedient.

KW - nuclear data

KW - uncertainty

KW - covariance matrix

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_114739

UR - http://knowledgecentre.sckcen.be/so2/bibref/8189

M3 - In-proceedings paper

VL - 1

SP - 27

EP - 36

BT - Nuclear Measurements, Evaluations and Applications - NEMEA-6

CY - Paris, France

T2 - Nuclear measurements, Evaluations and Applications - NEMEA-6

Y2 - 25 October 2010 through 28 October 2010

ER -