TIBTIDNotes/TIBTIDIntNote/SiStripLayout.tex

\section{TIB and TID layout}

TIB and TID are very compact objects with high readout granularity;
channel and module densities are three to four times larger than in
the other SST subsystems (Table~\ref{table:Density}).
The TIB and TID layout has been designed keeping in mind their complexity:
the mechanical structures have been simplified as much as possible,
while the routing of the services (cooling, readout, controls) has been
adapted to the very high channel density making use of all accessible
paths inside the detector.

%matching the
%following features: simple mechanical structure; easy routing of the
%large number of service connections (cooling, readout, controls); easy
%component mounting in the case of the TIB non-planar (cylindrical)
%geometry; optimization the theta (and phi?) for the TID. 

The TIB is structured in four concentric layers. Each layer is
split along the vertical plane at $z=0$ into two almost identical half-layers. Each
half-layer is further split along the horizontal at $y=0$ into two semi-cylindrical
structures, also referred to as ``shells''. 
Both spilts in $\phi$ and $z$ are done ins such a way that the sensor surfaces always 
overlap leaving no dead area when measuring high momentum charged particles coming 
from the interaction region.
The shell structure is a
semi-cylindrical carbon fiber assembly strenghten by two circular
flanges at both ends. To decrease their density and to provide a better accessibility
during integration, modules and services are hold 
either on the external and the internal surfaces. The services are laid down on
the surface and run parallel to the $z$ axis.
% on the surface toward the end (i.e. in the
%direction along which $|z|$ increases).
The modules and the related
services that sit on the same side of a shell at the same $\phi$
coordinate constitute a \textit{string}. 

The TID is split into six disks (three per each side of
TIB). The disk is made up by three sub-disks called "rings" since each
ring holds modules at the same radius. The ring structure consists of 
a mechanical support made of an annular carbon fiber honeycomb.
Also in this case modules and services are located on both sides
of the mechanical structure.
%to decrease the density
%and therefore providing a better accessibility during ring integration
%and  disk assembly.

The TIB/TID system is physically
divided into two separated structures, one located in the
$z > 0$ region and one located in the $z < 0$ region and known as
TIB/TID+ and TIB/TID- respectively. Each TID+ and TID- is obtained by
inserting, positioning and fixing the three disks into a carbon fiber
cylinder called {\it Service Cylinder}. Each Service Cylinder has
several holes at the disk positions; this allow the
connection of the power lines and to route out all the fibers of the
disk. The Service Cylinder is also used to connect mechanically TIB+/-
and TID+/-, and to route out the services of the TIB and of the TID.

The cooling in the TIB/TID is distributed via aluminum pipe circuits  
that  are bent into loops and soldered to inlet/outlet manifolds at
the flange for the TIB, and at the ring outer edge for the TID.
The thermal connection between pipes and sensor modules is made with aluminum ledges which are 
precisely glued on the carbon fiber support structure and in good thermal contact with the pipes. 
On each ledge there are two threaded M1 holes onto which the modules are tightened.
Precisely drilled slots, coaxial with the threaded holes, are the reference point where
inserts are stick in providing mechanical reference for modules. An example for a TIB module
is shown in Fig.~\ref{fig:module_cooling}). 

The TIB and TID substructures, 16 shells and 18 rings, are relatively
large-sized objects: one shell holds 135 to 216 modules, one ring holds 40 to 48 modules.
Some other relevant specifications of the TIB and TID substructures are
summarized in Table~\ref{table:layers}. 
A finished half of the TIB and a TID Disk are shown in
Fig.~\ref{fig:tib} and~\ref{fig:tid}. 
%The pictures allow the sub-structures to be recognized.


\begin{figure}[!htb]
\begin{center}
  \includegraphics[width=0.45\textwidth]{Figs/shell.pdf} 
%  \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf} 
  \hskip 1cm
  \includegraphics[width=0.45\textwidth]{Figs/TIB_barrel.png}
\end{center}
\caption{A layer 3 TIB shell (left panel) and half of TIB assembled (right panel).}
\label{fig:tib}       % Give a unique label
\end{figure}

\begin{figure}[!htb]
\begin{center}
  \includegraphics[height=0.35\textwidth]{Figs/ring.pdf} 
%  \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf} 
  \hskip 3cm
  \includegraphics[height=0.35\textwidth]{Figs/TID-disk.pdf}
\end{center}
\caption{A TID ring 1 assembled (left panel) and one complete TID disk (right panel).}
\label{fig:tid}       % Give a unique label
\end{figure}


\begin{table}[!htb]
\begin{center}
%\begin{tabular}{|l||c|c|c|c|c|c|c|}
\caption[smallcaption]{Total number of modules, strips (or electronic readout channels), detector volume and 
channel density for the different tracker subsystems. Service access area is also defined
for barrel geometry detectors (TIB and TOB) as their flange area. The channel density in this 
area gives also an idea of the complexity of the detector integration.}
\label{table:Density}
\begin{tabular}{|l|ccccccc|}
\hline
 &         &          &        & Module   & Channel                    & Service  & Service              \\
 & \# of   &\# of     & Volume & Density   & Density                    & Area & Density             \\
 & modules & channels & [m$^3$]& [$\times 10^3$  m$^{-3}$] & [$\times 10^6$ ch m$^{-3}$] & [m$^2$] &  [$\times 10^6$ ch m$^{-2}$]\\
%\hline
\hline
TIB & 2724 & 1 787 904 & 0.82 & 3.2 &  2.2 & 1.6 & 1.11\\
%\hline
TID & 816 & 565 248 & 0.5 & 1.6  & 1.1  & & \\
%\hline
TOB & 5208 & 3 096 576 & 5.9 & 0.89  & 0.52 & 5.7 & 0.54\\
%\hline
TEC & 6400 & 3 866 624 & 11 & 0.58 & 0.35  & & \\
\hline
\end{tabular}
\end{center}
\end{table}


\begin{table}[!htb]
\begin{center}
\caption[smallcaption]{Details on the different layers/rings of the TIB/TID. }
\label{table:layers}
%\begin{tabular}{|l||c|c|c|c|c|c|c|}
\begin{tabular}{|l|ccccccc|}
\hline
 Layer & \# mechanical & \# cooling  &  DS/SS & \# of modules  & \# of channels & \# Control & \# Mother  \\  
       &   structures  &  circuits    &  layer &  total         & per module         &  Rings     &  Cables  \\
 \hline
% \hline
TIB L1  & 4 shells & 12 & DS & 672 & 768 & 24 & 112 \\
TIB L2  & 4 shells & 16 & DS & 864 & 768 & 32 & 144 \\
TIB L3  & 4 shells & 12 & SS & 540 & 512 & 12 & 180 \\
TIB L4  & 4 shells & 16 & SS & 648 & 512 & 16 & 216 \\
TID R1  & 6 rings  & 24 & DS & 288 & 768 & 12 & 48 \\
TID R2  & 6 rings  & 24 & DS & 288 & 768 & 12 & 48 \\
TID R3  & 6 rings  & 24 & SS & 240 & 512 & 12 & 48 \\
\hline 
\end{tabular} 
\end{center}
\end{table}


%\subsection{Mechanical Structures}

%A TIB shell is shown on Fig.~\ref{fig:tibshell}).

%Each cooling loop hosts three modules placed in a straight row, which is called a
%A string of modules is connected to the same CCU, thus forming a control branch.

%\begin{figure}
%\centering
%\includegraphics[width=\textwidth]{   }
%\caption{TIB shell: are visible the internal and external parts, the cooling pipes and the string}
%\label{fig:tibshell}
%\end{figure}


%\begin{figure}
%\centering 
%\includegraphics[width=\textwidth]{   }
%\caption{TID ring }
%\label{fig:tidring}
%\end{figure}


\begin{figure}
\centering
\includegraphics[width=0.6\textwidth]{Figs/module_cooling.pdf}
\caption{Module Cooling. 
\textbf{Upper picture:} part of a cooling loop with six ledges to hold three modules and three
smaller ledges to hold Analog Opto-Hybrids (adjacent cooling circuits are partially visible).
\textbf{Lower picture:} a detail of a cooling loop. The cooling fluid direction
is evidenced with blue arrows, and the precision holes for module insertion are circled in
red. A module mounted on the nearby position is also visible.}
\label{fig:module_cooling}
\end{figure}
Revision:	1.6
Committed:	Wed May 20 15:56:13 2009 UTC (15 years, 11 months ago) by carlo
Content type:	application/x-tex
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.5:	+6 -8 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	sguazz	1.4	\section{TIB and TID layout}
2
3			TIB and TID are very compact objects with high readout granularity;
4			channel and module densities are three to four times larger than in
5	carlo	1.6	the other SST subsystems (Table~\ref{table:Density}).
6	carlo	1.5	The TIB and TID layout has been designed keeping in mind their complexity:
7			the mechanical structures have been simplified as much as possible,
8			while the routing of the services (cooling, readout, controls) has been
9			adapted to the very high channel density making use of all accessible
10			paths inside the detector.
11
12			%matching the
13			%following features: simple mechanical structure; easy routing of the
14			%large number of service connections (cooling, readout, controls); easy
15			%component mounting in the case of the TIB non-planar (cylindrical)
16			%geometry; optimization the theta (and phi?) for the TID.
17	sguazz	1.4
18			The TIB is structured in four concentric layers. Each layer is
19			split along the vertical plane at $z=0$ into two almost identical half-layers. Each
20			half-layer is further split along the horizontal at $y=0$ into two semi-cylindrical
21	carlo	1.5	structures, also referred to as ``shells''.
22			Both spilts in $\phi$ and $z$ are done ins such a way that the sensor surfaces always
23			overlap leaving no dead area when measuring high momentum charged particles coming
24			from the interaction region.
25			The shell structure is a
26	sguazz	1.4	semi-cylindrical carbon fiber assembly strenghten by two circular
27	carlo	1.5	flanges at both ends. To decrease their density and to provide a better accessibility
28			during integration, modules and services are hold
29			either on the external and the internal surfaces. The services are laid down on
30	sguazz	1.4	the surface and run parallel to the $z$ axis.
31			% on the surface toward the end (i.e. in the
32			%direction along which $\|z\|$ increases).
33			The modules and the related
34			services that sit on the same side of a shell at the same $\phi$
35			coordinate constitute a \textit{string}.
36
37			The TID is split into six disks (three per each side of
38			TIB). The disk is made up by three sub-disks called "rings" since each
39			ring holds modules at the same radius. The ring structure consists of
40	carlo	1.5	a mechanical support made of an annular carbon fiber honeycomb.
41			Also in this case modules and services are located on both sides
42			of the mechanical structure.
43			%to decrease the density
44			%and therefore providing a better accessibility during ring integration
45			%and disk assembly.
46	sguazz	1.4
47	carlo	1.5	The TIB/TID system is physically
48			divided into two separated structures, one located in the
49	sguazz	1.4	$z > 0$ region and one located in the $z < 0$ region and known as
50			TIB/TID+ and TIB/TID- respectively. Each TID+ and TID- is obtained by
51	carlo	1.5	inserting, positioning and fixing the three disks into a carbon fiber
52	sguazz	1.4	cylinder called {\it Service Cylinder}. Each Service Cylinder has
53	carlo	1.5	several holes at the disk positions; this allow the
54	sguazz	1.4	connection of the power lines and to route out all the fibers of the
55			disk. The Service Cylinder is also used to connect mechanically TIB+/-
56			and TID+/-, and to route out the services of the TIB and of the TID.
57
58			The cooling in the TIB/TID is distributed via aluminum pipe circuits
59			that are bent into loops and soldered to inlet/outlet manifolds at
60			the flange for the TIB, and at the ring outer edge for the TID.
61	carlo	1.6	The thermal connection between pipes and sensor modules is made with aluminum ledges which are
62	sguazz	1.4	precisely glued on the carbon fiber support structure and in good thermal contact with the pipes.
63			On each ledge there are two threaded M1 holes onto which the modules are tightened.
64			Precisely drilled slots, coaxial with the threaded holes, are the reference point where
65	carlo	1.6	inserts are stick in providing mechanical reference for modules. An example for a TIB module
66	sguazz	1.4	is shown in Fig.~\ref{fig:module_cooling}).
67
68			The TIB and TID substructures, 16 shells and 18 rings, are relatively
69	carlo	1.5	large-sized objects: one shell holds 135 to 216 modules, one ring holds 40 to 48 modules.
70	sguazz	1.4	Some other relevant specifications of the TIB and TID substructures are
71			summarized in Table~\ref{table:layers}.
72			A finished half of the TIB and a TID Disk are shown in
73	carlo	1.6	Fig.~\ref{fig:tib} and~\ref{fig:tid}.
74			%The pictures allow the sub-structures to be recognized.
75	sguazz	1.4
76
77
78			\begin{figure}[!htb]
79			\begin{center}
80			\includegraphics[width=0.45\textwidth]{Figs/shell.pdf}
81			% \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf}
82			\hskip 1cm
83			\includegraphics[width=0.45\textwidth]{Figs/TIB_barrel.png}
84			\end{center}
85	carlo	1.6	\caption{A layer 3 TIB shell (left panel) and half of TIB assembled (right panel).}
86	sguazz	1.4	\label{fig:tib} % Give a unique label
87			\end{figure}
88
89			\begin{figure}[!htb]
90			\begin{center}
91			\includegraphics[height=0.35\textwidth]{Figs/ring.pdf}
92			% \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf}
93			\hskip 3cm
94			\includegraphics[height=0.35\textwidth]{Figs/TID-disk.pdf}
95			\end{center}
96	carlo	1.5	\caption{A TID ring 1 assembled (left panel) and one complete TID disk (right panel).}
97	sguazz	1.4	\label{fig:tid} % Give a unique label
98			\end{figure}
99
100
101			\begin{table}[!htb]
102			\begin{center}
103			%\begin{tabular}{\|l\|\|c\|c\|c\|c\|c\|c\|c\|}
104			\caption[smallcaption]{Total number of modules, strips (or electronic readout channels), detector volume and
105			channel density for the different tracker subsystems. Service access area is also defined
106			for barrel geometry detectors (TIB and TOB) as their flange area. The channel density in this
107			area gives also an idea of the complexity of the detector integration.}
108			\label{table:Density}
109			\begin{tabular}{\|l\|ccccccc\|}
110			\hline
111			& & & & Module & Channel & Service & Service \\
112			& \# of &\# of & Volume & Density & Density & Area & Density \\
113			& modules & channels & [m$^3$]& [$\times 10^3$ m$^{-3}$] & [$\times 10^6$ ch m$^{-3}$] & [m$^2$] & [$\times 10^6$ ch m$^{-2}$]\\
114			%\hline
115			\hline
116			TIB & 2724 & 1 787 904 & 0.82 & 3.2 & 2.2 & 1.6 & 1.11\\
117			%\hline
118			TID & 816 & 565 248 & 0.5 & 1.6 & 1.1 & & \\
119			%\hline
120			TOB & 5208 & 3 096 576 & 5.9 & 0.89 & 0.52 & 5.7 & 0.54\\
121			%\hline
122			TEC & 6400 & 3 866 624 & 11 & 0.58 & 0.35 & & \\
123			\hline
124			\end{tabular}
125			\end{center}
126			\end{table}
127
128
129			\begin{table}[!htb]
130			\begin{center}
131			\caption[smallcaption]{Details on the different layers/rings of the TIB/TID. }
132			\label{table:layers}
133			%\begin{tabular}{\|l\|\|c\|c\|c\|c\|c\|c\|c\|}
134			\begin{tabular}{\|l\|ccccccc\|}
135			\hline
136			Layer & \# mechanical & \# cooling & DS/SS & \# of modules & \# of channels & \# Control & \# Mother \\
137			& structures & circuits & layer & total & per module & Rings & Cables \\
138			\hline
139			% \hline
140	carlo	1.5	TIB L1 & 4 shells & 12 & DS & 672 & 768 & 24 & 112 \\
141			TIB L2 & 4 shells & 16 & DS & 864 & 768 & 32 & 144 \\
142			TIB L3 & 4 shells & 12 & SS & 540 & 512 & 12 & 180 \\
143			TIB L4 & 4 shells & 16 & SS & 648 & 512 & 16 & 216 \\
144	sguazz	1.4	TID R1 & 6 rings & 24 & DS & 288 & 768 & 12 & 48 \\
145			TID R2 & 6 rings & 24 & DS & 288 & 768 & 12 & 48 \\
146			TID R3 & 6 rings & 24 & SS & 240 & 512 & 12 & 48 \\
147			\hline
148			\end{tabular}
149			\end{center}
150			\end{table}
151
152
153			%\subsection{Mechanical Structures}
154
155			%A TIB shell is shown on Fig.~\ref{fig:tibshell}).
156
157			%Each cooling loop hosts three modules placed in a straight row, which is called a
158			%A string of modules is connected to the same CCU, thus forming a control branch.
159
160			%\begin{figure}
161			%\centering
162			%\includegraphics[width=\textwidth]{ }
163			%\caption{TIB shell: are visible the internal and external parts, the cooling pipes and the string}
164			%\label{fig:tibshell}
165			%\end{figure}
166
167
168			%\begin{figure}
169			%\centering
170			%\includegraphics[width=\textwidth]{ }
171			%\caption{TID ring }
172			%\label{fig:tidring}
173			%\end{figure}
174
175
176
177			\begin{figure}
178			\centering
179			\includegraphics[width=0.6\textwidth]{Figs/module_cooling.pdf}
180			\caption{Module Cooling.
181	carlo	1.5	\textbf{Upper picture:} part of a cooling loop with six ledges to hold three modules and three
182			smaller ledges to hold Analog Opto-Hybrids (adjacent cooling circuits are partially visible).
183	sguazz	1.4	\textbf{Lower picture:} a detail of a cooling loop. The cooling fluid direction
184	carlo	1.5	is evidenced with blue arrows, and the precision holes for module insertion are circled in
185	sguazz	1.4	red. A module mounted on the nearby position is also visible.}
186			\label{fig:module_cooling}
187			\end{figure}