Conference paper Open Access

# THE NEW NEUTRON NOISE SOLVER OF THE MONTE CARLO CODE TRIPOLI-4

Am´elie Rouchon,Walid Jarrah and Andrea Zoia

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<identifier identifierType="DOI">10.5281/zenodo.3567587</identifier>
<creators>
<creator>
<creatorName>Am´elie Rouchon,Walid Jarrah and Andrea Zoia</creatorName>
<givenName>Walid Jarrah and Andrea Zoia</givenName>
<familyName>Am´elie Rouchon</familyName>
<affiliation>CEA (SERMA)</affiliation>
</creator>
</creators>
<titles>
<title>THE NEW NEUTRON NOISE SOLVER OF THE MONTE CARLO CODE TRIPOLI-4</title>
</titles>
<publisher>Zenodo</publisher>
<publicationYear>2019</publicationYear>
<subjects>
<subject>Neutron noise, Monte Carlo, TRIPOLI-4 R  , Frequency domain, Complex statistical weights</subject>
</subjects>
<dates>
<date dateType="Issued">2019-08-25</date>
</dates>
<resourceType resourceTypeGeneral="ConferencePaper"/>
<alternateIdentifiers>
<alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/3567587</alternateIdentifier>
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<relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.3567586</relatedIdentifier>
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<rightsList>
<rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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<descriptions>
<description descriptionType="Abstract">&lt;p&gt;Neutron noise appears as fluctuations of the neutron field induced by vibrations of fuel elements,&lt;br&gt;
control rods or any other mechanical structures in the core, as well as from global&lt;br&gt;
or local fluctuations in the flow, density or void fraction of the coolant. Neutron noise&lt;br&gt;
equations are obtained by assuming small perturbations of macroscopic cross-sections&lt;br&gt;
around a steady-state neutron field and by subsequently taking the Fourier transform in&lt;br&gt;
the frequency domain. Recently, a new Monte Carlo algorithm was proposed in order to&lt;br&gt;
solve the transport equation in neutron noise theory with complex-valued weights and a&lt;br&gt;
modified collision operator. This paper presents the new neutron noise solver based on&lt;br&gt;
these methods and implemented in the reference Monte Carlo code TRIPOLI-4R &amp;nbsp;developed&lt;br&gt;
at CEA. We illustrate the capabilities of the solver by considering the noise analysis&lt;br&gt;
of a UOX PWR assembly.&lt;/p&gt;</description>
</descriptions>
<fundingReferences>
<fundingReference>
<funderName>European Commission</funderName>
<funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/100010661</funderIdentifier>
<awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/754316/">754316</awardNumber>
<awardTitle>Core monitoring techniques and experimental validation and demonstration</awardTitle>
</fundingReference>
</fundingReferences>
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