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 as shown in Table~\ref{table:Density} where
the main parameters of the SST subsystems are
reported. 
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
insets 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:tibtid}. 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 L3 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:	1.5
Committed:	Mon Apr 27 14:27:03 2009 UTC (16 years ago) by carlo
Content type:	application/x-tex
Branch:	MAIN
Changes since 1.4:	+39 -25 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			the other SST subsystems as shown in Table~\ref{table:Density} where
6			the main parameters of the SST subsystems are
7	carlo	1.5	reported.
8			The TIB and TID layout has been designed keeping in mind their complexity:
9			the mechanical structures have been simplified as much as possible,
10			while the routing of the services (cooling, readout, controls) has been
11			adapted to the very high channel density making use of all accessible
12			paths inside the detector.
13
14			%matching the
15			%following features: simple mechanical structure; easy routing of the
16			%large number of service connections (cooling, readout, controls); easy
17			%component mounting in the case of the TIB non-planar (cylindrical)
18			%geometry; optimization the theta (and phi?) for the TID.
19	sguazz	1.4
20			The TIB is structured in four concentric layers. Each layer is
21			split along the vertical plane at $z=0$ into two almost identical half-layers. Each
22			half-layer is further split along the horizontal at $y=0$ into two semi-cylindrical
23	carlo	1.5	structures, also referred to as ``shells''.
24			Both spilts in $\phi$ and $z$ are done ins such a way that the sensor surfaces always
25			overlap leaving no dead area when measuring high momentum charged particles coming
26			from the interaction region.
27			The shell structure is a
28	sguazz	1.4	semi-cylindrical carbon fiber assembly strenghten by two circular
29	carlo	1.5	flanges at both ends. To decrease their density and to provide a better accessibility
30			during integration, modules and services are hold
31			either on the external and the internal surfaces. The services are laid down on
32	sguazz	1.4	the surface and run parallel to the $z$ axis.
33			% on the surface toward the end (i.e. in the
34			%direction along which $\|z\|$ increases).
35			The modules and the related
36			services that sit on the same side of a shell at the same $\phi$
37			coordinate constitute a \textit{string}.
38
39			The TID is split into six disks (three per each side of
40			TIB). The disk is made up by three sub-disks called "rings" since each
41			ring holds modules at the same radius. The ring structure consists of
42	carlo	1.5	a mechanical support made of an annular carbon fiber honeycomb.
43			Also in this case modules and services are located on both sides
44			of the mechanical structure.
45			%to decrease the density
46			%and therefore providing a better accessibility during ring integration
47			%and disk assembly.
48	sguazz	1.4
49	carlo	1.5	The TIB/TID system is physically
50			divided into two separated structures, one located in the
51	sguazz	1.4	$z > 0$ region and one located in the $z < 0$ region and known as
52			TIB/TID+ and TIB/TID- respectively. Each TID+ and TID- is obtained by
53	carlo	1.5	inserting, positioning and fixing the three disks into a carbon fiber
54	sguazz	1.4	cylinder called {\it Service Cylinder}. Each Service Cylinder has
55	carlo	1.5	several holes at the disk positions; this allow the
56	sguazz	1.4	connection of the power lines and to route out all the fibers of the
57			disk. The Service Cylinder is also used to connect mechanically TIB+/-
58			and TID+/-, and to route out the services of the TIB and of the TID.
59
60			The cooling in the TIB/TID is distributed via aluminum pipe circuits
61			that are bent into loops and soldered to inlet/outlet manifolds at
62			the flange for the TIB, and at the ring outer edge for the TID.
63			The thermal connection between pipes and sensor modules is made with Aluminum ledges which are
64			precisely glued on the carbon fiber support structure and in good thermal contact with the pipes.
65			On each ledge there are two threaded M1 holes onto which the modules are tightened.
66			Precisely drilled slots, coaxial with the threaded holes, are the reference point where
67			insets are stick in providing mechanical reference for modules. An example for a TIB module
68			is shown in Fig.~\ref{fig:module_cooling}).
69
70			The TIB and TID substructures, 16 shells and 18 rings, are relatively
71	carlo	1.5	large-sized objects: one shell holds 135 to 216 modules, one ring holds 40 to 48 modules.
72	sguazz	1.4	Some other relevant specifications of the TIB and TID substructures are
73			summarized in Table~\ref{table:layers}.
74			A finished half of the TIB and a TID Disk are shown in
75			Fig.~\ref{fig:tibtid}. The pictures allow the sub-structures to be
76			recognized.
77
78
79
80			\begin{figure}[!htb]
81			\begin{center}
82			\includegraphics[width=0.45\textwidth]{Figs/shell.pdf}
83			% \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf}
84			\hskip 1cm
85			\includegraphics[width=0.45\textwidth]{Figs/TIB_barrel.png}
86			\end{center}
87			\caption{A L3 TIB shell (left panel) and half of TIB assembled (right panel).}
88			\label{fig:tib} % Give a unique label
89			\end{figure}
90
91			\begin{figure}[!htb]
92			\begin{center}
93			\includegraphics[height=0.35\textwidth]{Figs/ring.pdf}
94			% \includegraphics[height=0.5\textwidth]{Figs/TIB-assembled.pdf}
95			\hskip 3cm
96			\includegraphics[height=0.35\textwidth]{Figs/TID-disk.pdf}
97			\end{center}
98	carlo	1.5	\caption{A TID ring 1 assembled (left panel) and one complete TID disk (right panel).}
99	sguazz	1.4	\label{fig:tid} % Give a unique label
100			\end{figure}
101
102
103			\begin{table}[!htb]
104			\begin{center}
105			%\begin{tabular}{\|l\|\|c\|c\|c\|c\|c\|c\|c\|}
106			\caption[smallcaption]{Total number of modules, strips (or electronic readout channels), detector volume and
107			channel density for the different tracker subsystems. Service access area is also defined
108			for barrel geometry detectors (TIB and TOB) as their flange area. The channel density in this
109			area gives also an idea of the complexity of the detector integration.}
110			\label{table:Density}
111			\begin{tabular}{\|l\|ccccccc\|}
112			\hline
113			& & & & Module & Channel & Service & Service \\
114			& \# of &\# of & Volume & Density & Density & Area & Density \\
115			& modules & channels & [m$^3$]& [$\times 10^3$ m$^{-3}$] & [$\times 10^6$ ch m$^{-3}$] & [m$^2$] & [$\times 10^6$ ch m$^{-2}$]\\
116			%\hline
117			\hline
118			TIB & 2724 & 1 787 904 & 0.82 & 3.2 & 2.2 & 1.6 & 1.11\\
119			%\hline
120			TID & 816 & 565 248 & 0.5 & 1.6 & 1.1 & & \\
121			%\hline
122			TOB & 5208 & 3 096 576 & 5.9 & 0.89 & 0.52 & 5.7 & 0.54\\
123			%\hline
124			TEC & 6400 & 3 866 624 & 11 & 0.58 & 0.35 & & \\
125			\hline
126			\end{tabular}
127			\end{center}
128			\end{table}
129
130
131			\begin{table}[!htb]
132			\begin{center}
133			\caption[smallcaption]{Details on the different layers/rings of the TIB/TID. }
134			\label{table:layers}
135			%\begin{tabular}{\|l\|\|c\|c\|c\|c\|c\|c\|c\|}
136			\begin{tabular}{\|l\|ccccccc\|}
137			\hline
138			Layer & \# mechanical & \# cooling & DS/SS & \# of modules & \# of channels & \# Control & \# Mother \\
139			& structures & circuits & layer & total & per module & Rings & Cables \\
140			\hline
141			% \hline
142	carlo	1.5	TIB L1 & 4 shells & 12 & DS & 672 & 768 & 24 & 112 \\
143			TIB L2 & 4 shells & 16 & DS & 864 & 768 & 32 & 144 \\
144			TIB L3 & 4 shells & 12 & SS & 540 & 512 & 12 & 180 \\
145			TIB L4 & 4 shells & 16 & SS & 648 & 512 & 16 & 216 \\
146	sguazz	1.4	TID R1 & 6 rings & 24 & DS & 288 & 768 & 12 & 48 \\
147			TID R2 & 6 rings & 24 & DS & 288 & 768 & 12 & 48 \\
148			TID R3 & 6 rings & 24 & SS & 240 & 512 & 12 & 48 \\
149			\hline
150			\end{tabular}
151			\end{center}
152			\end{table}
153
154
155			%\subsection{Mechanical Structures}
156
157			%A TIB shell is shown on Fig.~\ref{fig:tibshell}).
158
159			%Each cooling loop hosts three modules placed in a straight row, which is called a
160			%A string of modules is connected to the same CCU, thus forming a control branch.
161
162			%\begin{figure}
163			%\centering
164			%\includegraphics[width=\textwidth]{ }
165			%\caption{TIB shell: are visible the internal and external parts, the cooling pipes and the string}
166			%\label{fig:tibshell}
167			%\end{figure}
168
169
170			%\begin{figure}
171			%\centering
172			%\includegraphics[width=\textwidth]{ }
173			%\caption{TID ring }
174			%\label{fig:tidring}
175			%\end{figure}
176
177
178
179			\begin{figure}
180			\centering
181			\includegraphics[width=0.6\textwidth]{Figs/module_cooling.pdf}
182			\caption{Module Cooling.
183	carlo	1.5	\textbf{Upper picture:} part of a cooling loop with six ledges to hold three modules and three
184			smaller ledges to hold Analog Opto-Hybrids (adjacent cooling circuits are partially visible).
185	sguazz	1.4	\textbf{Lower picture:} a detail of a cooling loop. The cooling fluid direction
186	carlo	1.5	is evidenced with blue arrows, and the precision holes for module insertion are circled in
187	sguazz	1.4	red. A module mounted on the nearby position is also visible.}
188			\label{fig:module_cooling}
189			\end{figure}