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White Rabbit
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957802ca
Commit
957802ca
authored
Jun 25, 2018
by
Javier Serrano
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Reduced set of slides for 30min talk
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c4114543
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wr_hptd_2018_06.tex
presentations/WR_Javier_HPTD_2018_06/wr_hptd_2018_06.tex
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presentations/WR_Javier_HPTD_2018_06/wr_hptd_2018_06.tex
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957802ca
...
...
@@ -66,7 +66,7 @@
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Title Page Info %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\title
[White Rabbit\hspace{
3em}\insertframenumber/\inserttotal
framenumber]
{
White Rabbit
}
\title
[White Rabbit\hspace{
5em}\insert
framenumber]
{
White Rabbit
}
\author
{
Javier Serrano
}
\institute
{
CERN BE-CO
\\
Hardware and Timing section
}
\date
[26 June 2018]
{
High-Precision Timing Distribution meeting
\\
Geneva, 26 June 2018
}
...
...
@@ -98,37 +98,6 @@
\subsection
{}
%=======================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
What is White Rabbit?
}
\begin{columns}
[c]
\column
{
0.8
\textwidth
}
\begin{itemize}
\item
Renovation of accelerator's control and timing
\item
Based on well-known technologies
\item
Open Hardware and Open Software with commercial support
\item
International collaboration
\item
Many users: CERN, GSI, KM3NET, cosmic ray detectors, metrology labs...
\end{itemize}
\column
{
0.3
\textwidth
}
\begin{center}
\includegraphics
[width=1.0\textwidth]
{
logo/WRlogo.pdf
}
\end{center}
\end{columns}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Why we use Open Hardware ?
}
\begin{center}
\includegraphics
[width=.7\textwidth]
{
ohwr/commercial
_
and
_
open.pdf
}
\end{center}
\begin{itemize}
\item
Get a design just the way we want it
\item
Peer review and design re-use
\item
Healthier relationship with companies
\end{itemize}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
White Rabbit: an
\emph
{
extension
}
of Ethernet
}
\begin{columns}
[c]
...
...
@@ -358,73 +327,6 @@
\end{frame}
\frame
{
\frametitle
{
An aside: PLL block diagram
}
\includegraphics
[width=\textwidth]
{
misc/pll
_
model.pdf
}
}
\frame
{
\frametitle
{
An aside: PLL transfer functions
}
\begin{block}
{
Total output phase spectrum
}
$
\Phi
_
o
(
s
)
=
H
(
s
)
\cdot
\Phi
_
i
(
s
)
+
E
(
s
)
\cdot
\Phi
_
n
(
s
)
$
\end{block}
\begin{block}
{
System transfer function (low pass)
}
$
H
(
s
)
=
\frac
{
K
_{
VCO
}
K
_
d F
(
s
)
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
\begin{block}
{
Error transfer function (high pass)
}
$
E
(
s
)
=
1
-
H
(
s
)
=
\frac
{
s
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
}
\frame
{
\frametitle
{
An aside: jitter optimisation
}
\includegraphics
[height=0.7\textwidth]
{
misc/pll
_
psd.pdf
}
}
\begin{frame}
{
Test setup for 10MHz switch output
}
\begin{center}
\includegraphics
[width=\textwidth]
{
measurements/WRSlowJitter/rsz
_
experimental
_
setup.png
}
\end{center}
\end{frame}
\begin{frame}
{
WR switch clocking scheme
}{
Thanks to Mattia Rizzi for the work and
the figures in this section
}
\begin{center}
\includegraphics
[width=.85\textwidth]
{
switch/wrs
_
v3
_
3
_
clocking.png
}
\end{center}
\end{frame}
\begin{frame}
{
MMCM noise
}
\begin{center}
\includegraphics
[height=.7\textheight]
{
switch/mmcm
_
noise.png
}
\end{center}
\end{frame}
\begin{frame}
{
WR Switch: low jitter daughterboard
}
\begin{columns}
\column
{
.35
\textwidth
}
\includegraphics
[width=.8\textheight, angle=90]
{
measurements/WRSlowJitter/rsz
_
3d
_
image
__
1
_
.jpg
}
\column
{
.65
\textwidth
}
\begin{itemize}
\item
Current release of WRS in GM mode has sub-optimal performance on both jitter (9ps RMS 1Hz-100kHz) and ADEV (1.4E-11
$
\tau
$
=1s ENBW 50Hz)
\item
A daughterboard was designed, produced and tested to improve the performance
\item
Modified WRS improves performance on both jitter (
$
<
$
2ps RMS 10Hz-100kHz) and ADEV (
$
<
$
5E-13
$
\tau
$
=1s ENBW 50Hz) in GM mode
\end{itemize}
\end{columns}
\end{frame}
\begin{frame}
{
Test Results in GM mode: PM noise
}
\begin{center}
\includegraphics
[height=.85\textheight]
{
measurements/WRSlowJitter/pn.png
}
\end{center}
\end{frame}
\begin{frame}
{
Test Results in GM mode: Modified ADEV
}
\begin{center}
\includegraphics
[height=.85\textheight]
{
measurements/WRSlowJitter/mdev.png
}
\end{center}
\end{frame}
\section
{
Current developments
}
\subsection
{}
...
...
@@ -503,4 +405,107 @@ PC.
\end{center}
\end{frame}
\appendix
\section*
{
Reserve Slides
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
What is White Rabbit?
}
\begin{columns}
[c]
\column
{
0.8
\textwidth
}
\begin{itemize}
\item
Renovation of accelerator's control and timing
\item
Based on well-known technologies
\item
Open Hardware and Open Software with commercial support
\item
International collaboration
\item
Many users: CERN, GSI, KM3NET, cosmic ray detectors, metrology labs...
\end{itemize}
\column
{
0.3
\textwidth
}
\begin{center}
\includegraphics
[width=1.0\textwidth]
{
logo/WRlogo.pdf
}
\end{center}
\end{columns}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Why we use Open Hardware ?
}
\begin{center}
\includegraphics
[width=.7\textwidth]
{
ohwr/commercial
_
and
_
open.pdf
}
\end{center}
\begin{itemize}
\item
Get a design just the way we want it
\item
Peer review and design re-use
\item
Healthier relationship with companies
\end{itemize}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\frame
{
\frametitle
{
An aside: PLL block diagram
}
\includegraphics
[width=\textwidth]
{
misc/pll
_
model.pdf
}
}
\frame
{
\frametitle
{
An aside: PLL transfer functions
}
\begin{block}
{
Total output phase spectrum
}
$
\Phi
_
o
(
s
)
=
H
(
s
)
\cdot
\Phi
_
i
(
s
)
+
E
(
s
)
\cdot
\Phi
_
n
(
s
)
$
\end{block}
\begin{block}
{
System transfer function (low pass)
}
$
H
(
s
)
=
\frac
{
K
_{
VCO
}
K
_
d F
(
s
)
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
\begin{block}
{
Error transfer function (high pass)
}
$
E
(
s
)
=
1
-
H
(
s
)
=
\frac
{
s
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
}
\frame
{
\frametitle
{
An aside: jitter optimisation
}
\includegraphics
[height=0.7\textwidth]
{
misc/pll
_
psd.pdf
}
}
\begin{frame}
{
Test setup for 10MHz switch output
}
\begin{center}
\includegraphics
[width=\textwidth]
{
measurements/WRSlowJitter/rsz
_
experimental
_
setup.png
}
\end{center}
\end{frame}
\begin{frame}
{
WR switch clocking scheme
}{
Thanks to Mattia Rizzi for the work and
the figures in this section
}
\begin{center}
\includegraphics
[width=.85\textwidth]
{
switch/wrs
_
v3
_
3
_
clocking.png
}
\end{center}
\end{frame}
\begin{frame}
{
MMCM noise
}
\begin{center}
\includegraphics
[height=.7\textheight]
{
switch/mmcm
_
noise.png
}
\end{center}
\end{frame}
\begin{frame}
{
WR Switch: low jitter daughterboard
}
\begin{columns}
\column
{
.35
\textwidth
}
\includegraphics
[width=.8\textheight, angle=90]
{
measurements/WRSlowJitter/rsz
_
3d
_
image
__
1
_
.jpg
}
\column
{
.65
\textwidth
}
\begin{itemize}
\item
Current release of WRS in GM mode has sub-optimal performance on both jitter (9ps RMS 1Hz-100kHz) and ADEV (1.4E-11
$
\tau
$
=1s ENBW 50Hz)
\item
A daughterboard was designed, produced and tested to improve the performance
\item
Modified WRS improves performance on both jitter (
$
<
$
2ps RMS 10Hz-100kHz) and ADEV (
$
<
$
5E-13
$
\tau
$
=1s ENBW 50Hz) in GM mode
\end{itemize}
\end{columns}
\end{frame}
\begin{frame}
{
Test Results in GM mode: PM noise
}
\begin{center}
\includegraphics
[height=.85\textheight]
{
measurements/WRSlowJitter/pn.png
}
\end{center}
\end{frame}
\begin{frame}
{
Test Results in GM mode: Modified ADEV
}
\begin{center}
\includegraphics
[height=.85\textheight]
{
measurements/WRSlowJitter/mdev.png
}
\end{center}
\end{frame}
\end{document}
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