411 lines
12 KiB
TeX
411 lines
12 KiB
TeX
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% Goal: show enthousiasm, knowledge and drive about the field
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\title[STEP-UP: Investigating interferometry with GRAND and BEACON]{
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{ \large STEP-UP Interview}\\
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{
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Investigating interferometry with\\
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GRAND\footnote{Giant Radio Array for Neutrino Detection} and BEACON\footnote{Beam forming Elevated Array for COsmic Neutrinos}
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}
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}
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\date{May $10^{\text{\tiny{th}}}$, 2023}
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\author[E.T. de Boone]{
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E.T. de Boone
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\\
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\vspace{2em}
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Advisor: Olivier Martineau, LPNHE\\
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\quad\quad\quad\quad\quad Harm Schoorlemmer, IMAPP
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}
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\begin{document}
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{
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\setbeamertemplate{footline}{} % no page number here
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\section{Talk}
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\frame{ \titlepage }
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}
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\section{My studies}
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\begin{frame}{My studies}
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Studies @Radboud University, Nijmegen
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\begin{itemize}
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\item Bachelor's from 2012 to 2020 \\
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\quad {\small Minor: Astrophysics}
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\item Master's from 2020 to 2023 (expected) \\
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\quad {\small Specialisation: Particle and Astrophysics}\\
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\quad {\small Minor: Computational Data Science}
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\item Master's Internship (November 2021 - June 2023) \\
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\quad {\small Supervisor: Harm Schoorlemmer, IMAPP, Radboud University}\\
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\quad {\small ``Enhancing Timing Accuracy in Air Shower Radio Detectors''}
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\end{itemize}
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\vspace*{2em}
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Interests:
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\begin{itemize}
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\item Hardware experimenting
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\item Ultra High Energy particles
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\item Radio detection
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\end{itemize}
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\end{frame}
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% Context
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%%%%%%%%%
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\section{Radio and Airshowers}
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\begin{frame}{Ultra High Energy particles}
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\begin{figure}
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\includegraphics[width=\textwidth]{grand/astroparticletypes_grand.jpg}
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% \caption{
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% From: \cite{GRAND:2018ia}
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% }
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\end{figure}
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\end{frame}
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\begin{frame}{Radio signals and Airshowers}
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\begin{figure}
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\includegraphics[width=\textwidth]{grand/GRAND-detection-principle-1.png}
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% \caption{
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% From: \cite{GRAND:2018ia}
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% }
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\end{figure}
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\end{frame}
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\begin{frame}{Advantages of Radio Interferometry}
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\begin{columns}
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\begin{column}{0.53\textwidth}
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Interferometric Radio Observables:
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\begin{itemize}
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\item<1-> Shower axis reconstruction%\; Relevant for $\nu$s pointing back to sources
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\vspace*{2em}
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\item<2-> Depth of airshower\\
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$\mapsto$ composition measurement
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\\
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\quad\;(Fe, p, $\gamma$, $\nu$)
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\end{itemize}
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\end{column}
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\begin{column}{0.47\textwidth}
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\begin{figure}
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\includegraphics[width=\textwidth]{2006.10348/fig01.png}
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\caption[caption]{
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\centering
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\tiny{
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% From: \cite{Schoorlemmer:2020low}
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orange dot: true shower axis;\hspace{\textwidth}
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blue dot: maximum in map
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}
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}
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\end{figure}
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\end{column}
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\end{columns}
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\end{frame}
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% Radio Interferometry
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%%%%%%%%%%%%%%%%%%%%%%
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\section{Radio Interferometry}
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\begin{frame}{Radio Interferometry: Concept}
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\begin{columns}
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\begin{column}{0.4\textwidth}
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\begin{figure}
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\includegraphics<1>[width=\textwidth]{radio_interferometry/rit_schematic_base.pdf}%
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\includegraphics<2>[width=\textwidth]{radio_interferometry/rit_schematic_far.pdf}%
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\includegraphics<3>[width=\textwidth]{radio_interferometry/rit_schematic_close.pdf}%
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\includegraphics<4>[width=\textwidth]{radio_interferometry/rit_schematic_true.pdf}%
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\end{figure}
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\end{column}
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\begin{column}{0.6\textwidth}
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\vspace*{\fill}
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\begin{itemize}
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\item<1-> Measure signal $S_i(t)$ at antenna $\vec{a_i}$
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\item<2-> Calculate light travel time \\[5pt]
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\quad $\Delta_i(\vec{x}) = \frac{ \left| \vec{x} - \vec{a_i} \right| }{c} n_{eff}$
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\item<2-> Sum waveforms accounting \\
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for time delay \\[5pt]
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\quad $S(\vec{x}, t) = \sum S_i( t + \Delta_i(\vec{x}) )$
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\end{itemize}
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\vspace*{\fill}
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\begin{figure}% Spatially
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\includegraphics<1>[width=0.8\textwidth]{radio_interferometry/single_trace.png}%
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\includegraphics<2>[width=0.8\textwidth]{radio_interferometry/trace_overlap_bad.png}%
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\includegraphics<3>[width=0.8\textwidth]{radio_interferometry/trace_overlap_medium.png}%
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\includegraphics<4>[width=0.8\textwidth]{radio_interferometry/trace_overlap_best.png}%
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\end{figure}
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\end{column}
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\end{columns}
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\end{frame}
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\section{Radio and Airshowers}
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\begin{frame}{}
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\begin{columns}
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\begin{column}{0.47\textwidth}
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\includegraphics[width=\textwidth]{2006.10348/fig01.png}
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\end{column}
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\hfill
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\begin{column}{0.47\textwidth}
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\includegraphics[width=\textwidth]{2006.10348/fig03_b.png}
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\end{column}
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\end{columns}
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\end{frame}
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% My Internship
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%%%%%%%%%%%%%%%
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\section{My Internship}
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\begin{frame}{Timing Constraint for Radio Interferometry}
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\vspace*{ -2em }
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Required time accuracy $< 1 \mathrm{ns}$ not provided by GNSS $ \gtrsim 5 \mathrm{ns}$.
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\vspace{ 2em }
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\begin{columns}
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\begin{column}{0.5\textwidth}
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\visible<2->{%
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Additional synchronisation\\
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using physics band
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\begin{itemize}
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\item Pulsed beacon
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\item<4-> Continuous (Sine)
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\end{itemize}
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\vspace{20pt}
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\includegraphics[width=\textwidth]{beacon/array_setup_gps_transmitter_cows.png}
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}%
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\end{column}
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\begin{column}{0.5\textwidth}
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\begin{figure}% Clock error fixes
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\includegraphics<1>[width=\textwidth]{radio_interferometry/trace_overlap/on-axis/dc_grid_power_time_fixes.py.repair_none.axis.trace_overlap.repair_none.pdf}%
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\includegraphics<2>[width=\textwidth]{radio_interferometry/trace_overlap/on-axis/dc_grid_power_time_fixes.py.no_offset.axis.trace_overlap.no_offset.pdf}%
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\includegraphics<3>[width=\textwidth]{radio_interferometry/trace_overlap/on-axis/dc_grid_power_time_fixes.py.repair_phases.axis.trace_overlap.repair_phases.pdf}%
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\includegraphics<4>[width=\textwidth]{radio_interferometry/trace_overlap/on-axis/dc_grid_power_time_fixes.py.repair_full.axis.trace_overlap.repair_full.pdf}%
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\end{figure}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}{Enhancing Timing Accuracy in Air Shower Radio Detectors}
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\begin{columns}
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\begin{column}{0.5\textwidth}
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\centering
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Pulse method
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\includegraphics[width=1.1\textwidth]{pulse/time_res_vs_snr_multiple_dt.pdf}
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\end{column}
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\begin{column}{0.5\textwidth}
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\centering
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Sine method
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\includegraphics[width=1.1\textwidth]{beacon/time_res_vs_snr.pdf}
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\end{column}
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\end{columns}
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\end{frame}
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% Towards GRAND
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%%%%%%%%%%%%%%%%%%%%
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\section{GRAND and Interferometry}
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\begin{frame}{GRAND and Interferometry}
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\begin{columns}
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\begin{column}{0.6\textwidth}
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GRAND in heavy development,\\
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relying on radio measurements\\
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\vspace{2em}
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Special interest in horizontal showers\\
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\vspace{2em}
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Neutrino's point back to source\\
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\visible<2->{
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\vspace*{\fill}
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\begin{center}
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\begin{minipage}{.6\textwidth}
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\hrule
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\centering
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\vspace{ 2em }
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\textit{Thank you!}
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\end{minipage}
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\end{center}
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%\vspace{ 4em }
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}
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\end{column}
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\begin{column}{0.4\textwidth}
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\begin{figure}
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\includegraphics<1>[width=\textwidth]{2006.10348/fig03_b.png}
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\includegraphics<2>[width=\textwidth]{2006.10348/fig01_a.png}
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% \caption{
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% From: \cite{Schoorlemmer:2020low}
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% }
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\end{figure}
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\end{column}
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\end{columns}
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\end{frame}
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%%%%%%%%%%%%%%%
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% Backup slides
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%%%%%%%%%%%%%%%
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\appendix
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\section{Supplemental material}
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\begin{frame}[c]
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\centering
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\Large {
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\textcolor{blue} {
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Supplemental material
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}
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}
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\end{frame}
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\begin{frame}{Airshower development}
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\begin{figure}
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\includegraphics[width=\textwidth]{1607.08781/fig02a_airshower+detectors.png}
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% \caption{
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% From \cite{Schroder:2016hrw}
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% }
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\end{figure}
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\end{frame}
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\subsection{Radio Emission}
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\begin{frame}{Polarised Radio Emission}
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\begin{columns}
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\begin{column}{0.2\textwidth}
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\centering
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Geosynchrotron
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\end{column}
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\begin{column}{0.7\textwidth}
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\includegraphics[width=\textwidth]{airshower/airshower_radio_polarisation_geomagnetic.png}%
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\end{column}
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\end{columns}
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\vfill
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\begin{columns}
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\begin{column}{0.2\textwidth}
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\centering
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Askaryan
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\end{column}
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\begin{column}{0.7\textwidth}
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\includegraphics[width=\textwidth]{airshower/airshower_radio_polarisation_askaryan.png}%
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\end{column}
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\end{columns}
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% \vfill
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% From: \cite{Huege:2017bqv}
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\end{frame}
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%%%%%%%%%
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\subsection{Single frequency beacon synchronisation}
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\begin{frame}{Short period beacon synchronisation}
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\begin{figure}
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\includegraphics<1>[width=\textwidth]{beacon/08_beacon_sync_timing_outline.pdf}%
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\includegraphics<2>[width=\textwidth]{beacon/08_beacon_sync_synchronised_outline.pdf}%
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\includegraphics<3>[width=\textwidth]{beacon/08_beacon_sync_synchronised_period_alignment.pdf}%
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\end{figure}
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\end{frame}
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\begin{frame}{Time resolving short period beacon}
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\begin{figure}
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\includegraphics<1>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_none.scale4d.pdf}
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\includegraphics<2>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_phases.scale4d.pdf}
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\includegraphics<3>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_all.scale4d.pdf}
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\includegraphics<4>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.no_offset.scale4d.pdf}
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\end{figure}
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\end{frame}
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%%%%%%%%%%
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\subsection{GNSS clock stability}
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\begin{frame}{GNSS clock stability I}
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\begin{columns}
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\begin{column}{0.4\textwidth}
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\begin{figure}
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\centering
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\includegraphics[width=0.8\textwidth]{grand/setup/antenna-to-adc.pdf}
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\caption{
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GRAND Digitizer Unit's ADC to antennae
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}
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\end{figure}
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\end{column}
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\hfill
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\begin{column}{0.5\textwidth}
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\begin{figure}
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\includegraphics[width=\textwidth]{grand/setup/channel-delay-setup.pdf}%
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\caption{
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Channel filterchain delay experiment
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}
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\end{figure}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}{GNSS clock stability II}
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\begin{figure}
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\centering
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\includegraphics[width=0.7\textwidth]{grand/setup/grand-gps-setup.pdf}
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\caption{
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GNSS stability experiment
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}
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\end{figure}
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\end{frame}
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\subsubsection{In the field}
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\begin{frame}{GNSS clock stability II}
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\begin{columns}
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\begin{column}{0.5\textwidth}
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\includegraphics[width=\textwidth]{images/IMG_20220819_154801.jpg}
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\end{column}
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\begin{column}{0.5\textwidth}
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\includegraphics[width=\textwidth]{images/IMG_20220815_161244.jpg}
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\end{column}
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\end{columns}
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\end{frame}
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%%%%%%%%%%%%%%
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% Bibliography
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%%%%%%%%%%%%%%
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\section*{References}
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\begin{frame}{References}
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\printbibliography
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\end{frame}
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\end{document}
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