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authorstainer_t <thomas.stainer@oecd-nea.org>2025-09-08 13:48:49 +0200
committerstainer_t <thomas.stainer@oecd-nea.org>2025-09-08 13:48:49 +0200
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+\subsection{The \moc{CFC:} module}\label{sect:CFCData}
+
+The \moc{CFC:} module is used to generate a Feedback Model database required for a full core
+calculation in DONJON.\cite{sissaoui} The general
+specifications of this module are:
+
+\begin{DataStructure}{Structure \dstr{CFC:}}
+\dusa{CFCNAM} \moc{:=} \moc{CFC:} $[$ \dusa{CFCNAM} $]$ \\
+\hspace*{1.0cm} (\dusa{CPONAM}($i$), $i$=1,28) \moc{::} \dstr{desccfc}
+\end{DataStructure}
+
+\noindent
+ where
+
+\begin{ListeDeDescription}{mmmmmmmm}
+
+\item[\dusa{CFCNAM}] \verb|character*12| name of the \dds{fbmxsdb} data structure containing
+the Feedback Model reactor database. The reactor database can be updated if \dusa{CFCNAM}
+appears on the RHS.
+
+\item[\dusa{CPONAM}] \verb|character*12| name of read only \dds{cpo} data structures. There
+are 28 different \dds{cpo} data structures required here each containing respectively
+
+\begin{enumerate}
+
+\item the reactor reference cross section.
+
+\item cell cross section for the first fuel temperature.
+
+\item cell cross section for the second fuel temperature.
+
+\item cell cross section for the first coolant temperature.
+
+\item cell cross section for the second coolant temperature.
+
+\item cell cross section for the first moderator temperature.
+
+\item cell cross section for the second moderator temperature.
+
+\item cell cross section for the first coolant density.
+
+\item cell cross section for the second coolant density.
+
+\item cell cross section for the first moderator density.
+
+\item cell cross section for the second moderator density.
+
+\item cell cross section for a different concentration of boron.
+
+\item cell cross section for a different moderator purity.
+
+\item cell cross section for a different concentration of xenon.
+
+\item cell cross section for a different concentration of samarium.
+
+\item cell cross section for a different concentration of neptunium.
+
+\item cell cross section for the spectral mixed effect fuel/coolant density.
+
+\item cell cross section for the spectral mixed effect coolant density/temperature.
+
+\item cell cross section for low power history.
+
+\item cell cross section for intermediate power history.
+
+\item cell cross section for high power history.
+
+\item reactor reference moderator cross section.
+
+\item moderator cross section for the first moderator temperature.
+
+\item moderator cross section for the second moderator temperature.
+
+\item moderator cross section for the first moderator density.
+
+\item moderator cross section for the second moderator density.
+
+\item moderator cross section for a different concentration of boron.
+
+\item moderator cross section for a different moderator purity.
+
+\end{enumerate}
+
+\item[\dstr{desccfc}] structure containing the input data to this module (see
+\Sect{desccfc}).
+
+\end{ListeDeDescription}
+
+
+\subsubsection{Data input for module \moc{CFC:}}\label{sect:desccfc}
+
+\begin{DataStructure}{Structure \dstr{desccfc}}
+$[$ \moc{EDIT} \dusa{iprint} $]$ \\
+$[$ \moc{INFOR} \dusa{TITLE} $]$ \\
+$[$ \moc{DNAME} \dusa{RNANE} $]$ \\
+$[$ \moc{PWR} \dusa{powerref} \dusa{powerup} \dusa{powerint} \dusa{powerdown} $]$ \\
+$[$ \moc{TCOOL} \dusa{tcoolref} \dusa{tcoolup} \dusa{tcooldown} $]$ \\
+$[$ \moc{TMODE} \dusa{tmoderef} \dusa{tmodeup} \dusa{tmodedown} $]$ \\
+$[$ \moc{TFUEL} \dusa{tfuelref} \dusa{tfuelup} \dusa{tfueldown} $]$ \\
+$[$ \moc{RHOC} \dusa{denscool}$]$ \\
+$[$ \moc{RHOM} \dusa{densmode}$]$ \\
+$[$ \moc{XIR} \dusa{purityref} \dusa{puritydown} $]$ \\
+\end{DataStructure}
+
+\noindent where
+
+
+\begin{ListeDeDescription}{mmmmmmmm}
+
+\item[\moc{EDIT}] keyword used to modify the print level \dusa{iprint}.
+
+\item[\dusa{iprint}] index used to control the printing of the module.
+
+\item[\moc{INFOR}] keyword which allows to set the title.
+
+\item[\dusa{TITLE}] \verb|character*72| title associated to the reactor database generated.
+
+\item[\moc{DNAME}] keyword to set a specific database name in the data
+structure.
+
+\item[\dusa{RNAME}] \verb|character*12| name of the feedback database.
+
+\item[\moc{PWR}] keyword to specify power used for evolution for power history.
+
+\item[\dusa{powerref}] power value for regular power history (\dusa{CPONAM} default).
+
+\item[\dusa{powerup}] power value for high power history (\dusa{CPONAM} 21).
+
+\item[\dusa{powerint}] power value for intermediate power history (\dusa{CPONAM} 20).
+
+\item[\dusa{powerdown}] power value for low power history (\dusa{CPONAM} 19).
+
+\item[\moc{TCOOL}] keyword to specify coolant temperature used for regular evolution and perturbed cases.
+
+\item[\dusa{tcoolref}] normal coolant temperature (\dusa{CPONAM} default).
+
+\item[\dusa{tcoolup}] high coolant temperature (\dusa{CPONAM} 4).
+
+\item[\dusa{tcooldown}] low coolant temperature (\dusa{CPONAM} 5).
+
+\item[\moc{TMODE}] keyword to specify moderator temperature used for regular evolution and perturbed cases.
+
+\item[\dusa{tmoderef}] normal moderator temperature (\dusa{CPONAM} default).
+
+\item[\dusa{tmodeup}] high moderator temperature (\dusa{CPONAM} 6 and 23).
+
+\item[\dusa{tmodedown}] low moderator temperature (\dusa{CPONAM} 7 and 24).
+
+\item[\moc{TFUEL}] keyword to specify fuel temperature used for regular evolution and perturbed cases.
+
+\item[\dusa{tfuelref}] normal fuel temperature (\dusa{CPONAM} default).
+
+\item[\dusa{tfuelup}] high fuel temperature (\dusa{CPONAM} 2).
+
+\item[\dusa{tfueldown}] low fuel temperature (\dusa{CPONAM} 3).
+
+\item[\moc{RHOC}] keyword to specify coolant density used for regular evolution.
+
+\item[\dusa{denscool}] normal coolant density (\dusa{CPONAM} default).
+
+\item[\moc{RHOM}] keyword to specify moderator density used for regular evolution.
+
+\item[\dusa{densmode}] normal moderator density (\dusa{CPONAM} default).
+
+\item[\moc{XIR}] keyword to specify water purity ($D_2O$ content) used for regular evolution and perturbed cases.
+
+\item[\dusa{purityref}] normal moderator purity (fraction of $D_2O$ in water) (\dusa{CPONAM} default).
+
+\item[\dusa{puritydown}] perturbed moderator purity (fraction of $D_2O$ in water) (\dusa{CPONAM} 13 and 28).
+
+\end{ListeDeDescription}
+
+
+Note: Other perturbed values are recovered directly from the concentrations and isotope densities stored in the different \dusa{CPONAM}.
+\clearpage