Changeset 6511 for trunk/MagicSoft/TDAS-Extractor/Introduction.tex

Timestamp:

02/15/05 20:28:35 (20 years ago)

Author:

hbartko

Message:

*** empty log message ***

File:

• trunk/MagicSoft/TDAS-Extractor/Introduction.tex (modified) (3 diffs)

trunk/MagicSoft/TDAS-Extractor/Introduction.tex

@@ -1 +1 @@
 \section{Introduction}
 
-\begin{itemize}
-\item{Short description of the MAGIC read-out system}
-\end{itemize}
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+The MAGIC telescope aims to study the gamma ray emission from high energy phenomena and the violent physics processes in the universe at the lowest energy threshold possible \cite{low_energy}. 
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+
 
 Figure~\ref{fig:MAGIC_read-out_scheme} shows a sketch of the MAGIC read-out scheme, including the PMT camera, 
@@ -43 +44 @@
 % Obviously by doing this, more LONS is integrated and thus the performance of the telescope on the analysis level is degraded. 
 
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+To reach the highest sensitivity and the lowest possible analysis energy threshold the recorded signals from Cherenkov light have to be accurately reconstructed. Therefore the highest possible signal to noise ratio, signal reconstruction resolution and a small bias are important.
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+Monte Carlo (MC) based simulations predict different time structures for gamma and hadron induced shower images as well as for images of single muons. An accurate arrival time determination may therefore improve the separation power of gamma events from the background events. Moreover, the timing information may be used in the image cleaning to discriminate between pixels which signal belongs to the shower and pixels which are affected by randomly timed background noise.
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+This note is structured as follows: In section 2 the average pulse shapes are reconstructed from the recorded FADC samples for calibration and cosmics pulses. These pulse shapes are compared with the pulse shape implemented in the MC. In section 3 different signal reconstruction algorithms and their implementation in the common MAGIC software framework MARS are reviewed. In section 4 criteria for an optimal signal reconstruction are developed. Thereafter the signal extraction algorithms under study are applied to pedestal, calibration and MC events in sections 5 to 7. The CPU requirements of the different algorithms are compared in section 8. Finally in section 9 the results are summarized and in section 10 a standard signal extraction algorithm for MAGIC is proposed.
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 \par
 
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 %%% Local Variables: 
 %%% mode: latex
 %%% TeX-master: "MAGIC_signal_reco"
 %%% End: 
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