Changeset 6748 for trunk/MagicSoft/TDAS-Extractor

Timestamp:

03/04/05 14:52:40 (20 years ago)

Author:

gaug

Message:

*** empty log message ***

Location:

trunk/MagicSoft/TDAS-Extractor

Files:

• Algorithms.tex (modified) (2 diffs)
• Calibration.tex (modified) (13 diffs)
• Conclusions.tex (modified) (1 diff)
• Criteria.tex (modified) (1 diff)
• Introduction.tex (modified) (1 diff)
• MonteCarlo.tex (modified) (4 diffs)
• Pedestal.tex (modified) (4 diffs)
• Results.tex (modified) (1 diff)

trunk/MagicSoft/TDAS-Extractor/Algorithms.tex

@@ -13 +13 @@
 \begin{figure}[htp]
 \includegraphics[width=0.99\linewidth]{ExtractorClasses.eps}
-\caption{Sketch of the inheritances of three exemplary MARS signal extractor classes: 
+\caption{Sketch of the inheritances of three typical MARS signal extractor classes: 
 MExtractFixedWindow, MExtractTimeFastSpline and MExtractTimeAndChargeDigitalFilter}
 \label{fig:extractorclasses}
@@ -113 +113 @@
   extracted arrival time, its error and the number of saturating FADC slices, respectively. 
   \par
-  The pedestals can be used for the extraction via the reference ``ped'', also the AB-flag is given 
-  for AB-clock noise correction.
+  The pedestals can be used for the extraction via the reference ``ped'', also the ``AB-flag'' is given 
+  for clock noise correction.
 \end{description}
   

trunk/MagicSoft/TDAS-Extractor/Calibration.tex

@@ -34 +34 @@
 
 Table~\ref{tab:pulsercolours} lists the available colors and intensities and 
-figures~\ref{fig:pulseexample1leduv} and~\ref{fig:pulseexample23ledblue} show exemplary pulses 
+figures~\ref{fig:pulseexample1leduv} and~\ref{fig:pulseexample23ledblue} show typical pulses 
 as registered by the FADCs.
 Whereas the UV-pulse is rather stable, the green and blue pulses can show smaller secondary 
@@ -90 +90 @@
 \par
 Although we had looked at and tested all colour and extractor combinations resulting from these data, 
-we restrict ourselves to show here only exemplary behaviour and results of extractors. 
+we restrict ourselves to show here only typical behaviour and results of extractors. 
 All plots, including those which are not displayed in this TDAS, can be retrieved from the following 
 locations:
@@ -357 +357 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-4.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractFixedWindow}} on a window size of 8 high-gain and 8 low-gain slices 
 (extractor \#4). }
@@ -384 +384 @@
 \par
 Figure~\ref{fig:linear:phevscharge4} shows the conversion factor $c_{phe}$ obtained for different light intensities 
-and colors for three exemplary inner and three exemplary outer pixels using a fixed window on 
+and colors for three typical inner and three typical outer pixels using a fixed window on 
 8 FADC slices. The conversion factor seems to be linear to a good approximation, with the following restrictions:
 \begin{itemize}
@@ -408 +408 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-9.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractFixedWindowSpline}} 
 on a window size of 8 high-gain and 8 low-gain slices (extractor \#9). }
@@ -418 +418 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-15.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractFixedWindowPeakSearch}} on a window size of 8 high-gain and 8 low-gain slices 
 (extractor \#15). }
@@ -429 +429 @@
 \includegraphics[width=0.99\linewidth]{PheVsCharge-14.eps}
 \caption{Example of a the development of the conversion factor FADC counts to photo-electrons for three 
-exemplary inner pixels (upper plots) and three exemplary outer ones (lower plots) obtained with the extractor 
+typical inner pixels (upper plots) and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractFixedWindowPeakSearch}} 
 on a window size of 6 high-gain and 6 low-gain slices (extractor \#11). }
@@ -455 +455 @@
 \includegraphics[width=0.99\linewidth]{PheVsCharge-20.eps}
 \caption{Example of a the development of the conversion factor FADC counts to photo-electrons for three 
-exemplary inner pixels (upper plots) and three exemplary outer ones (lower plots) obtained with the extractor 
+typical inner pixels (upper plots) and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeSlidingWindow}} 
 on a window size of 6 high-gain and 6 low-gain slices (extractor \#20). }
@@ -474 +474 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-23.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeSpline}} with amplitude extraction (extractor \#23). }
 \label{fig:linear:phevscharge23}
@@ -499 +499 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-24.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeSpline}} with window size of 1 high-gain and 2 low-gain slices 
 (extractor \#24). }
@@ -523 +523 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-25.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeSpline}} with window size of 2 high-gain and 3 low-gain slices 
 (extractor \#25). }
@@ -553 +553 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-30.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeDigitalFilter}}  
 using a window size of 6 high-gain and 6 low-gain slices with UV-weights (extractor \#30). }
@@ -571 +571 @@
 \centering
 \includegraphics[width=0.99\linewidth]{PheVsCharge-31.eps}
-\caption{Conversion factor $c_{phe}$ for three exemplary inner pixels (upper plots) 
-and three exemplary outer ones (lower plots) obtained with the extractor 
+\caption{Conversion factor $c_{phe}$ for three typical inner pixels (upper plots) 
+and three typical outer ones (lower plots) obtained with the extractor 
 {\textit{MExtractTimeAndChargeDigitalFilter}} using a window size of 
 4 high-gain and 4 low-gain slices (extractor \#31). }

trunk/MagicSoft/TDAS-Extractor/Conclusions.tex

@@ -2 +2 @@
 
 In the past, many MAGIC analyses have been conducted using different signal extractors. 
-We developped and tested the most important signal and time extraction algorithms in the standard MAGIC software 
+We developed and tested the most important signal and time extraction algorithms in the standard MAGIC software 
 framework MARS. Our findings are that using a right signal extractor is important since some of the investigated ones
- differ considerably in quality and can severly degrade the subsequent analyses. On the other hand, we have found that 
-advanced signal recontruction algorithms open a new window to lower analysis energy threshold and permit to use the 
+ differ considerably in quality and can severely degrade the subsequent analyses. On the other hand, we have found that 
+advanced signal reconstruction algorithms open a new window to lower analysis energy threshold and permit to use the 
 time information of shower analyses. 
 \par

trunk/MagicSoft/TDAS-Extractor/Criteria.tex

@@ -132 +132 @@
 the reading and writing routines of the MARS software. 
 
-Thus, for an online-analysis a different extraction algorithm might be chosen than for the final most accurate 
+Thus, for an online-analysis a different extraction algorithm might be chosen as for the final most accurate 
 reconstruction of the signals offline.
 

trunk/MagicSoft/TDAS-Extractor/Introduction.tex

@@ -80 +80 @@
 \item[Inner and Outer pixels:\xspace] The MAGIC camera has two types of pixels which incorporate the following differences:
 \begin{enumerate}
-\item Size: The outer pixels have a factor four bigger area then the inner pixels~\cite{MAGIC-design}. 
+\item Size: The outer pixels have a factor four bigger area than the inner pixels~\cite{MAGIC-design}. 
 Their (quantum-efficiency convoluted) effective area is about a factor 2.6 higher.
 \item Gain: The camera is flat-fielded in order to yield a similar reconstructed charge signal for the same photon illumination intensity. 

trunk/MagicSoft/TDAS-Extractor/MonteCarlo.tex

@@ -3 +3 @@
 \subsection{Introduction \label{sec:mc:intro}}
 
-Many charasteristics of the extractor can only be investigated with the use of Monte-Carlo simulations~\cite{MC-Camera} 
+Many characteristics of the extractor can only be investigated with the use of Monte-Carlo simulations~\cite{MC-Camera} 
 of signal pulses and noise for the following reasons:
 
@@ -28 +28 @@
 \item No switching noise due to the low-gain switch has been simulated.
 \item The intrinsic transit time spread of the photo-multipliers has not been simulated.
-\item The pulses have been simulated in steps of 0.2\,ns before digitization. There is thus an artificial numerial time resolution 
+\item The pulses have been simulated in steps of 0.2\,ns before digitization. There is thus an artificial numerical time resolution 
 limit of $0.2\,\mathrm{ns}/\sqrt{12} \approx 0.06\,\mathrm{ns}$.
 \item The total dynamic range of the entire signal transmission chain was set to infinite, thus the detector has been simulated 
@@ -200 +200 @@
 section~\ref{sec:mc:convfactors}.
 \par
-One can see that for small signals, small extracion windows yield better resolutions, but extractors which do not
+One can see that for small signals, small extraction windows yield better resolutions, but extractors which do not
 entirely cover the whole pulse, show a clear dependency of the resolution with the signal strength. In the high-gain region, 
-this is valid for all fixed window extractors up to 6~FADC slices integraion region, all sliding window extractors up to 4~FADC 
+this is valid for all fixed window extractors up to 6~FADC slices integration region, all sliding window extractors up to 4~FADC 
 slices and for all spline extractors and the digital filter. Among those extractors with a signal dependent resolution, the 
 digital filter with 6~FADC slices extraction window shows the smallest dependency, namely 80\% per 50 photo-electrons. This 
@@ -320 +320 @@
 %%% mode: latex
 %%% TeX-master: "MAGIC_signal_reco"
+%%% TeX-master: "MAGIC_signal_reco"
 %%% End: 
 

trunk/MagicSoft/TDAS-Extractor/Pedestal.tex

@@ -364 +364 @@
 Figures~\ref{fig:sw:distped} through~\ref{fig:df4:distped} show the 
 extracted pedestal distributions for some selected extractors (\#18, \#23, \#25, \#28 and \#29)
- for one exemplary channel (pixel 100) and two background situations: Closed camera with only electronic
+ for one typical channel (pixel 100) and two background situations: Closed camera with only electronic
 noise and open camera pointing to an extra-galactic source.
 One can see the (asymmetric) Poisson behaviour of the 
@@ -519 +519 @@
 of a pedestal run using a sliding window of 6 FADC slices allowed to move within a window of 
 7 (top), 9 (center) and 13 slices.
-A pedestal run with galactic star background has been taken and one exemplary pixel (Nr. 100).
+A pedestal run with galactic star background has been taken and one typical pixel (Nr. 100).
 One can clearly see the pedestal contribution and a further part corresponding to one or more 
 photo-electrons.}
@@ -564 +564 @@
 applied on a sliding window of different sizes.
 In the top plot, a pedestal run with extra-galactic star background has been taken and in the bottom, 
-a galactic star background. An exemplary pixel (Nr. 100) has been used.
+a galactic star background. An typical pixel (Nr. 100) has been used.
 Above, a rate of 0.08 phe/ns and below, a rate of 0.1 phe/ns has been obtained.}
 \label{fig:df:ratiofit}
@@ -600 +600 @@
 the applied global extraction window sizes.
 A pedestal run with extra-galactic star background has been taken and 
-an exemplary pixel (Nr. 100) used. The conversion factor obtained from the 
+an typical pixel (Nr. 100) used. The conversion factor obtained from the 
 standard calibration is shown as a reference line. The obtained conversion factors are systematically
 lower than the reference one.}

trunk/MagicSoft/TDAS-Extractor/Results.tex

@@ -18 +18 @@
 \item The extractor should not have a charge bias bigger than its charge resolution.
 \item The time resolution should not be worse than twice the one obtainable with the best extractor.
-\item The number of mis-reconstruced times should not exceed 1\% on average (including the FADC jumps).
+\item The number of mis-reconstructed times should not exceed 1\% on average (including the FADC jumps).
 \item The needed CPU-time should not exceed the one required for reading the data into memory and writing it to disk.
 \end{itemize}