Changeset 5616

Timestamp:

12/17/04 00:36:29 (20 years ago)

Author:

gaug

Message:

*** empty log message ***

Location:

trunk/MagicSoft/TDAS-Extractor

Files:

• Performance.tex (modified) (2 diffs)
• UnsuitVsExtractor-1LedUV-Colour-04.eps (added)
• UnsuitVsExtractor-1LedsUV-Colour-04.eps (deleted)

trunk/MagicSoft/TDAS-Extractor/Performance.tex

@@ -3 +3 @@
 
 \subsection{Calibration}
+
+In this section, we describe the tests performed using light pulses of different colour, 
+pulse shapes and intensities with the MAGIC calibration pulser box. 
+\par
+The LED pulser system is able to provide fast light pulses of 3--4\,ns FWHM 
+with intensities ranging from 3--4 photo-electrons to more than 500 in one inner pixel of the 
+camera. These pulses can be produced in three colours (``errors'' denote the spectral width):
+
+\begin{itemize}
+\item Green: 520$\pm$40\,nm
+\item Blue:  460$\pm$30\,nm
+\item UV:    375$\pm$12\,nm
+\end{itemize}
+
+Whereas the UV-pulse is very stable, the green and blue pulses show sometimes secondary pulses after 
+about 10--40\,ns from the real pulse.
+\par
+Available intensities depend on the involved pulser light colour: 
+\begin{itemize}
+\item Green: 6 -- 120 phes
+\item Blue:  6 -- 500 phes
+\item UV:    3 -- 50 phes
+\end{itemize}
+
+One can see that the very stable UV-pulses are unfortunately only available in such intensities as to 
+not saturate the high-gain readout channel. However, the brightest combination of light pulses easily 
+saturates all channels in the camera, but does not reach a saturation of the low-gain channel.
+\par
+Our tests can be classified into three subsections:
+
+\begin{enumerate}
+\item Stability tests: These include numbers of excluded pixels by the calibration software, 
+numbers of reconstructed photo-electrons and counts of the numbers of outliers from the Gaussian 
+reconstructed charge distributions. 
+\item Linearity tests: These test the linearity of the extractor with respect to pulses of different intensity 
+and colour.
+\item Time resolution: These tests 
+\end{enumerate}
+
+\subsubsection{Stability tests}
+
+\begin{figure}[htp]
+\centering
+\includegraphics[height=0.95\textheight]{UnsuitVsExtractor-1LedUV-Colour-04.eps}
+\caption{Uncalibrated pixels and pixels outside of the Gaussian distribution for a very low 
+intensity pulse.}
+\end{figure}
+
+\subsubsection{Linearity tests}
+
+
+
+\subsubsection{Time resolution}
+
+
+
+
 \subsection{Pulpo Pulses}
 \subsection{MC Data}
@@ -20 +77 @@
 %%% mode: latex
 %%% TeX-master: "MAGIC_signal_reco"
+%%% TeX-master: "MAGIC_signal_reco."
 %%% End: