mirror of
https://gitlab.science.ru.nl/mthesis-edeboone/m.internship-documentation.git
synced 2024-12-22 13:03:32 +01:00
Thesis+Figure: Split Cable Measurements at 50MHz
This commit is contained in:
parent
f9071eeeff
commit
677105d651
5 changed files with 30 additions and 8 deletions
|
@ -68,7 +68,7 @@ Both the \gls{ADC} and the filterchains introduce systematic delays.
|
|||
Since each channel corresponds to a polarisation, it is important that relative systematic delays between the channels can be accounted for.
|
||||
\\
|
||||
|
||||
\begin{figure}[h]
|
||||
\begin{figure}
|
||||
\centering
|
||||
\includegraphics[width=0.4\textwidth]{grand/setup/channel-delay-setup.pdf}
|
||||
\caption{
|
||||
|
@ -115,12 +115,36 @@ However, because it is symmetric for both setups, this does not affect the measu
|
|||
\label{fig:split-cable:waveform}
|
||||
\end{subfigure}
|
||||
\caption{
|
||||
Waveforms of the sine wave measured in the ``forward'' setup and the phase shift between the channels.
|
||||
The sine wave was emitted at $50\MHz$ at $200\;\mathrm{mVpp}$.
|
||||
Waveforms of the sine wave measured in the ``forward'' setup and their spectra near the testing frequency of $50\MHz$..
|
||||
The sine wave was emitted at $200\;\mathrm{mVpp}$.
|
||||
}
|
||||
\label{fig:grand:signal}
|
||||
\end{figure}% >>>
|
||||
|
||||
\begin{figure}% <<< fig:grand:phaseshift
|
||||
\centering
|
||||
\includegraphics[width=0.47\textwidth]{grand/split-cable/sine-sweep/ch2ch4fig8-histogram.50.pdf}
|
||||
\caption{
|
||||
Histogram of the measured phase shifts in Figure~\ref{fig:grand:phaseshift:measruement}.
|
||||
}
|
||||
\label{fig:grand:phaseshift}
|
||||
\end{figure}% >>>
|
||||
|
||||
\begin{figure}% <<< fig:grand:phaseshift:measurements
|
||||
\centering
|
||||
\begin{subfigure}{0.47\textwidth}
|
||||
\includegraphics[width=0.47\textwidth]{grand/split-cable/sine-sweep/ch2ch4fig9-measurements.forward.50.pdf}
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}{0.47\textwidth}
|
||||
\includegraphics[width=0.47\textwidth]{grand/split-cable/sine-sweep/ch2ch4fig9-measurements.backward.50.pdf}
|
||||
\end{subfigure}
|
||||
\caption{
|
||||
The measured phase shifts at $50\MHz$ converted to a time delay.
|
||||
}
|
||||
\label{fig:grand:phaseshift}
|
||||
\end{figure}
|
||||
|
||||
%\begin{figure}% <<<<
|
||||
% \centering
|
||||
% \begin{subfigure}{0.45\textwidth}
|
||||
|
|
|
@ -190,7 +190,6 @@ Of course, a gaussian white noise component is introduced to the waveform as a s
|
|||
The green dashed lines indicate the measured beacon parameters.
|
||||
The amplitude spectrum clearly shows a strong component at roughly $50\MHz$.
|
||||
The phase spectrum of the original waveform shows the typical behaviour for a short pulse.
|
||||
\protect\Todo{ft amplitude airshower x1000}
|
||||
}
|
||||
\label{fig:single:proton}
|
||||
\end{figure}% >>>
|
||||
|
@ -211,7 +210,7 @@ Since the beacon can be recorded for much longer than the air shower signal, we
|
|||
The remaining waveform is fed into a \gls{DTFT} \eqref{eq:fourier:dtft} to measure the beacon's phase $\pMeas$ and amplitude.
|
||||
Note that due to explicitly including a time axis in a \gls{DTFT}, a number of samples can be omitted without introducing artifacts.
|
||||
\\
|
||||
With the obtained beacon parameters, the air shower signal is in turn reconstructed by subtracting the beacon from the full waveform in the time domain.\Todo{cite GAP note?}
|
||||
With the obtained beacon parameters, the air shower signal is in turn reconstructed by subtracting the beacon from the full waveform in the time domain.
|
||||
\\
|
||||
The small clock defect $\tClockPhase$ is then finally calculated from the beacon's phase $\pMeas$ by subtracting the phase introduced by the propagation from the beacon transmitter.
|
||||
\\
|
||||
|
@ -284,7 +283,7 @@ Afterwards, a new grid zooms in on the power maximum and the process is repeated
|
|||
\begin{subfigure}[t]{0.45\textwidth}
|
||||
\includegraphics[width=\textwidth]{ZH_simulation/findks/ca_period_from_shower.py.reconstruction.run0.power.pdf}
|
||||
\caption{
|
||||
Power measurement with the $k$s belonging to the overall maximum of the amplitude maxima.
|
||||
Power measurement with the $k$'s belonging to the overall maximum of the amplitude maxima.
|
||||
}
|
||||
\label{fig:findks:reconstruction}
|
||||
\end{subfigure}
|
||||
|
@ -308,7 +307,7 @@ Afterwards, a new grid zooms in on the power maximum and the process is repeated
|
|||
\begin{subfigure}[t]{0.45\textwidth}
|
||||
\includegraphics[width=\textwidth]{ZH_simulation/findks/ca_period_from_shower.py.maxima.run2.pdf}
|
||||
\caption{
|
||||
Final test grid obtaining the same $k$ as Figure~\ref{fig:findks:maxima:zoomed}.
|
||||
Final test grid obtaining the same $k$'s as Figure~\ref{fig:findks:maxima:zoomed}.
|
||||
}
|
||||
\label{fig:findks:maxima:zoomed2}
|
||||
\end{subfigure}
|
||||
|
@ -476,7 +475,6 @@ Additionally, since the true period shifts are static per event, evaluating the
|
|||
their effect on (\textit{right}) the alignment of the waveforms at the true axis
|
||||
and (\textit{left}) the interferometric power near the simulation axis (red plus).
|
||||
The maximum power is indicated by the blue cross.
|
||||
% \protect\Todo{x-axis relative to reference waveform, remove titles, no SNR}
|
||||
}
|
||||
\label{fig:grid_power_time_fixes}
|
||||
\end{figure}%>>>
|
||||
|
|
BIN
figures/grand/split-cable/sine-sweep/ch2ch4fig8-histogram.50.pdf
Normal file
BIN
figures/grand/split-cable/sine-sweep/ch2ch4fig8-histogram.50.pdf
Normal file
Binary file not shown.
Binary file not shown.
Binary file not shown.
Loading…
Reference in a new issue