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+\subsection{The \moc{PKINS:} module}\label{sect:pkins}
+
+\vskip 0.2cm
+The feedback parameters are responsible for the introduction of reactivity in the solution of the point-kinetics equations.
+Some feedback parameters have their time variation set by {\sl time laws} defined in module  \moc{PKINI:} (See Sect.~\ref{sect:pkini}).
+Some other are assumed constant during a {\sl time stage}, corresponding to a single call to module \moc{PKINS:}. The \moc{PKINS:}
+module is used to solve the point-kinetics equations over a single time stage.
+
+\vskip 0.08cm
+
+\noindent
+The \moc{PKINS:} module specification is:
+
+\begin{DataStructure}{Structure \moc{PKINS:}}
+$[$ \dusa{MAPFL} \moc{:=} $]$ \moc{PKINS:} \dusa{MAPFL} \moc{::} \dstr{descpkins}
+\end{DataStructure}
+
+\noindent where
+
+\begin{ListeDeDescription}{mmmmmmmm}
+
+\item[\dusa{MAPFL}] \texttt{character*12} name of the \dds{map} 
+object containing fuel regions description and global parameter informations. This object is declared
+in read-only mode if and only if keyword \moc{PICKR} is set.
+
+\item[\dstr{descpkins}] structure describing the input data to the \moc{PKINS:} module. 
+
+\end{ListeDeDescription}
+
+\vskip 0.2cm
+
+\subsubsection{Input data to the \moc{PKINS:} module}\label{sect:pkinsstr}
+
+\begin{DataStructure}{Structure \dstr{descpkins}}
+$[$ \moc{EDIT} \dusa{iprint} $]$ \\
+\moc{TIME} \dusa{t0} \dusa{dt} \\
+$\{~[$ \moc{POWER} \dusa{power} $|$ \moc{Y-INIT} (\dusa{y}(i),i=1,\dusa{ngroup+1}) $\}~]$ \\
+$[~\{$ \moc{PICK}  {\tt >>} \dusa{power\_out} {\tt <<} $|$ \moc{PICKR}  {\tt >>} \dusa{rho} {\tt <<} $\}~]$ \\
+;
+\end{DataStructure}
+
+\noindent where
+\begin{ListeDeDescription}{mmmmmmmm}
+
+\item[\moc{EDIT}] keyword used to set \dusa{iprint}.
+
+\item[\dusa{iprint}] integer index used to control the printing on screen:
+= 0 for no print; = 1 for minimum printing; larger values produce
+increasing amounts of output.
+
+\item[\moc{TIME}] keyword used to set the beginning-of-stage and duration times.
+
+\item[\dusa{t0}] beginning-of-stage time (s).
+
+\item[\dusa{dt}] stage duration (s). \dusa{dt} $=0.0$ if keyword \moc{PICKR} is set.
+
+\item[\moc{POWER}] keyword used to set the beginning-of-stage reactor power.
+
+\item[\dusa{power}] beginning-of-stage reactor power in MW.
+
+\item[\moc{Y-INIT}] keyword used to set the beginning-of-stage solution of the point kinetics equations.
+
+\item[\dusa{y}] beginning-of-stage value of a component of the beginning-of-stage solution. \dusa{ngroup} is the
+number of delayed precursor groups.
+
+\item[\moc{PICK}]  keyword used to recover the end-of-stage power (in MW) in a CLE-2000 variable.
+
+\item[\dusa{power\_out}] \texttt{character*12} CLE-2000 variable name in which the extracted power value will be placed.
+
+\item[\moc{PICKR}]  keyword used to recover the reactivity at time \dusa{t0} in a CLE-2000 variable.
+
+\item[\dusa{rho}] \texttt{character*12} CLE-2000 variable name in which the reactivity value will be placed.
+
+\end{ListeDeDescription}
+\clearpage