From 7dfcc480ba1e19bd3232349fc733caef94034292 Mon Sep 17 00:00:00 2001
From: stainer_t <thomas.stainer@oecd-nea.org>
Date: Mon, 8 Sep 2025 13:48:49 +0200
Subject: Initial commit from Polytechnique Montreal

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 doc/IGE351/SectDtracking.tex | 94 ++++++++++++++++++++++++++++++++++++++++++++
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+\section{Contents of a \dir{tracking} directory}\label{sect:trackingdir}
+
+This directory contains the information resulting from an analysis of a geometry using a specific
+calculation operator of DRAGON. 
+
+\subsection{State vector content for the \dir{tracking} data structure}\label{sect:trackingstate}
+
+The dimensioning parameters for this data structure, which are stored in the state vector
+$\mathcal{S}$, represent:
+
+\begin{itemize}
+
+\item The number of regions $N_{r}=\mathcal{S}^{t}_{1}$
+
+\item The number of unknown $N_{u}=\mathcal{S}^{t}_{2}$
+
+\item The leakage flag $I_{L}=\mathcal{S}^{t}_{3}$ 
+
+\begin{displaymath}
+I_{L} = \left\{
+\begin{array}{rl}
+ 0 & \textrm{Leakage is present} \\
+ 1 & \textrm{Leakage is absent} 
+\end{array} \right.
+\end{displaymath}
+
+\item The maximum number of mixture used $M_{m}=\mathcal{S}^{t}_{4}$
+
+\item The number of outer surfaces $N_{s}=\mathcal{S}^{t}_{5}$
+
+\item Flag related to the double-heterogeneity option $\mathcal{S}^{t}_{40}$ where
+\begin{displaymath}
+\mathcal{S}^{t}_{40} = \left\{
+\begin{array}{rl}
+ 0 & \textrm{the double-heterogeneity option is not used} \\
+ 1 & \textrm{the double-heterogeneity option is used.} \\
+\end{array} \right.
+\end{displaymath}
+
+\end{itemize}
+
+\subsection{The main \dir{tracking} directory}\label{sect:trackingdirmain}
+
+On its first level, the
+following records and sub-directories will be found in the \dir{tracking} directory:
+
+\begin{DescriptionEnregistrement}{Main records and sub-directories in \dir{tracking}}{8.0cm}
+\CharEnr
+  {SIGNATURE\blank{3}}{$*12$}
+  {Signature of the data structure ($\mathsf{SIGNA}=${\tt L\_TRACK\blank{5}}).}
+\IntEnr
+  {STATE-VECTOR}{$40$}
+  {Vector describing the various parameters associated with this data structure $\mathcal{S}^{t}_{i}$,
+  as defined in \Sect{trackingstate}.}
+\CharEnr
+  {TRACK-TYPE\blank{2}}{$*12$}
+  {Type of tracking considered ($\mathsf{CDOOR}$). Allowed values are:
+  {\tt 'EXCELL'}, {\tt 'SYBIL'}, {\tt 'MCCG'}, {\tt 'SN'}, {\tt 'BIVAC'} and {\tt 'TRIVAC'}.}
+\CharEnr
+  {LINK.GEOM\blank{3}}{$*12$}
+  {Name of the {\sc geometry} on which the tracking is based.}
+\CharEnr
+  {TITLE\blank{7}}{$*72$}
+  {Identification title ($\mathsf{TITLE}$) }
+\IntEnr
+  {MATCOD\blank{6}}{$\mathcal{S}^{t}_{1}$}
+  {Region material $M_{r}$}
+\IntEnr
+  {KEYFLX\blank{6}}{$\mathcal{S}^{t}_{1}$}
+  {Location in unknown vector of averaged regional flux $I_{r}$}
+\RealEnr
+  {VOLUME\blank{6}}{$\mathcal{S}^{t}_{1}$}{cm$^{3}$}
+  {Region volumes $V_{r}$}
+\OptIntEnr
+  {BC-REFL+TRAN}{$\mathcal{S}^{t}_{5}$}{$\mathcal{S}^{t}_{5}\ge 1$}
+  {Reflection/transmission matrix localisation operator $T_{s}$}
+\OptDirEnr
+  {BIHET\blank{7}}{$\mathcal{S}^{t}_{40}=1$}
+  {Sub-directory containing the data related to a double heterogeneity geometry.
+  The specification of this directory is given in \Sect{bihettrackingdir}} 
+\end{DescriptionEnregistrement}
+
+In addition to the above records, the main \dir{tracking} directory will also contain information
+which is specific to each tracking module. This information will be described in the following
+sub-sections. Also note that the contents of the $\mathcal{S}^{t}_{i}$ vector for $i\ge 6$ will depend
+on the specific tracking module and will be defined in the next sub-sections.
+
+\input{SectDsybil.tex}       % Description of a Sybil tracking
+\input{SectDexcell.tex}      % Description of an Excell tracking
+\input{SectDmccg.tex}        % Description of a MCCG tracking
+\input{SectDsn.tex}          % Description of a SN tracking
+\input{SectDbivac.tex}       % Description of a Bivac tracking
+\input{SectDtrivac.tex}      % Description of a Trivac tracking
+\input{SectDbihet.tex}       % Description of a Bihet tracking
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