Changeset 5243
- Timestamp:
- 10/12/04 14:13:50 (20 years ago)
- Location:
- trunk/MagicSoft/TDAS-Extractor
- Files:
-
- 1 added
- 1 edited
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trunk/MagicSoft/TDAS-Extractor/MAGIC_signal_reco.tex
r5216 r5243 60 60 %% body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 61 61 62 %------------------------------------------------------------ 63 64 65 66 \section{Introduction} 67 68 \begin{itemize} 69 \item{Short description of the MAGIC read-out system} 70 \end{itemize} 71 72 \section{Pulse Shape Reconstruction} 73 74 \begin{itemize} 75 \item{Algorithm: overlay many events} 76 \item{Differences cosmics / calibration} 77 \item{Implementation / parameterization in the MC. 78 \newline 79 \newline 80 \ldots {\it MAYBE, we should create MC calibration pulses for the subsequent studies } 81 \newline 82 \newline} 83 \end{itemize} 84 85 \section{Signal Reconstruction Algorithms} 86 87 \ldots {\it In this section, the extractors are described, especially w.r.t. which free parameters are left to play, 88 how they subtract the pedestal, how they compare between calibration and cosmics pulses and how an 89 extraction in case of a pure pedestal event takes place. } 90 \newline 91 \newline 92 {\it Missing coding: 93 \begin{itemize} 94 \item Implementing the AB-flag for all extractors \ldots Markus 95 \item Implementing a low-gain extraction based on the high-gain information \ldots Arnau 96 \item Joining the Sliding Window and Highest Integral extractor into one \ldots Markus 97 \item Real fit to the expected pulse shape \ldots Hendrik, Wolfgang ??? 98 \end{itemize} 99 } 100 101 102 \subsection{Pure signal extractors} 103 \subsubsection{Fixed Window} 104 \subsubsection{Fixed Window Peak Search} 105 \subsubsection{Fixed Window with integrated spline} 106 107 \subsection{Pure time extractors} 108 \subsubsection{Highest Integral} 109 110 \subsection{Combined extractors} 111 \subsubsection{Sliding Window with Highest Integral} 112 \subsubsection{Digital Filter} 113 \subsubsection{(Fast) Spline with Amplitude extraction} 114 \subsubsection{Real fit to the expected pulse shape \newline 115 \newline 116 } 117 118 %References: \cite{OF77} \cite{OF94}. 119 120 \section{Criteria for an optimal pedestal extraction} 121 122 \ldots {\it In this section, the distinction is made between: 123 \begin{itemize} 124 \item Defining the pedestal RMS as contribution 125 to the extracted signal fluctuations (later used in the calibration) 126 \item Defining the Pedestal Mean and RMS as the result of distributions obtained by 127 applying the extractor to pedestal runs (yielding biases and modified widths). 128 \item Deriving the correct probability for background fluctuations based on the extracted signal height. 129 ( including biases and modified widths). 130 \end{itemize} 131 \ldots Florian + ??? 132 \newline 133 \newline 134 } 135 \section{Criteria for the Optimal Signal Extraction} 136 137 \subsection{Resolution (amplitude and time)} 138 \ldots {\it In this section, the jitter to exactly identical input pulses is measured, for times, amplitudes, 139 high-gain and low-gain pulses 140 \begin{itemize} 141 \item Jitter to pulpo pulses \ldots Hendrik 142 \item Jitter to pedestals (of different intensity) \ldots Hendrik 143 \item Comparing MC signal with and w/o noise of different intensity \ldots Nuria 144 \item Comparing the low-gain to high-gain ratio for different intensities \ldots Markus 145 \item Derive the time jitter to calibration pulses \ldots Maxim ??? 146 \end{itemize} 147 } 148 149 \subsection{Bias} 150 \ldots {\it In this section, the bias of the extractor for low and high intensities is defined and measured 151 \begin{itemize} 152 \item Bias to pedestals (of different intensity) \ldots Hendrik 153 \item Comparing MC signal with and w/o noise of different intensity \ldots Nuria 154 \end{itemize} 155 } 156 157 \subsection{Signal to Noise} 158 \ldots {\it In this section, the signal to noise of an extractor is determined, for times and amplitudes 159 \newline \ldots Maxim ???, Thomas ??? 160 } 161 162 \subsection{Stability} 163 \ldots {\it In this section, the stability of an extractor to slightly varying pulse shapes is examined. 164 \begin{itemize} 165 \item Stability w.r.t. different weights files \ldots Hendrik 166 \item Outliers in time and amplitude extractions \ldots ??? 167 \item Stability of conversion factors from the calibration \ldots Markus 168 \item Stability w.r.t. the calibration secondary pulses \ldots Hendrik ??? 169 \end{itemize} 170 } 171 172 \subsection{Linearity} 173 \ldots {\it In this section, the Nuria plots are examined \newline \ldots Nuria 174 175 \subsection{Treatment of calibration pulses} 176 \ldots {\it In this section, the question of the different pulse shapes between calibration pulses, its 177 secondary pulses, possible secondary pulses from hadronic showers and the typical Cherenkov 178 pulses are extracted by the different extractors and typical dependencies examined, like the 179 Razmik plot, the number of photo-electrons with number of slices, comparisons between different colours, etc. 180 \newline \ldots Hendrik??? , Markus??? + ????} 181 182 \subsection{Low gain extraction} 183 \ldots {\it In this section, the stability of the low-gain extraction w.r.t. the high-gain extraction is 184 examined. Useful plots are still to be defined. 185 \newline \ldots Arnau ????} 186 187 \subsection{Applicability for different sampling speeds / no pulse shaping.} 188 \ldots {\it In this section, some comments of Hendrik will be made} 189 190 \subsection{CPU requirements} 191 \ldots {\it In this section, the needed CPU time is measured for each extractor independently 192 \newline \ldots ALL (after all)} 193 194 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 195 196 \section{Performance} 197 \ldots {\it This section will be written after the previous one} 198 199 \subsection{Calibration} 200 \subsection{Pulpo Pulses} 201 \subsection{MC Data} 202 \subsection{Cosmics Data?} 203 \subsection{Pedestals} 204 205 \section{Discussion} 206 \ldots {\it This section will discuss the best signal extractor \newline \ldots Thomas ???, Florian } 207 208 \section{Conclusions} 209 \ldots {\it This section will propose the best signal extractor.} 210 211 %------------------------------------------------------------------------------ 212 62 \include{Introduction} 63 \include{Reconstruction} 64 \include{Algorithms} 65 \include{Pedestal} 66 \include{Criteria} 67 \include{Performance} 68 \include{Discussion} 69 \include{Conclusions} 213 70 214 71 \bibliography{bibfile} 215 72 \bibliographystyle{bibstyle} 216 217 73 218 74 \end{document}
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