- Timestamp:
- May 2, 2016, 1:40:10 PM (8 years ago)
- Location:
- papers/2016_IPAC
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papers/2016_IPAC/MOPMB002_SPESO/MOPMB002.tex
r516 r593 124 124 On the breadboard two sets of two rotary stage allow to control the direction of the detectors. A photo of the experimental apparatus can be seen on figure~\ref{fig:SPESO_linac}. 125 125 126 \begin{figure}[ !htb]126 \begin{figure}[htbp] 127 127 % \vspace*{-.5\baselineskip} 128 128 \centering … … 135 135 Two different detectors are used, one is sensitive to electromagnetic waves in the Q-band (33-50~GHz - 9.1 to 6~mm) and the other one is sensitive in the Ka-band (26.5-40~GHz - 11.3 to 5~mm). These detectors are based on zero-bias Schottky diodes to produce a signal proportional to the incoming radiation. The data coming from these detectors are acquired by an oscilloscope. A typical example of data is shown on figure~\ref{fig:SPESO_data} 136 136 137 \begin{figure}[ !htb]137 \begin{figure}[htbp] 138 138 % \vspace*{-.5\baselineskip} 139 139 \centering … … 150 150 During normal beam operations the experiment is running autonomously: each time there is a linac trigger the data from the oscilloscope are recorded. Every 30 minutes the detectors are moved to a different location. In each 30 minutes cycle the grating is inserted for about 25~minutes and retracted for 5 minutes to allow measurement of the background. The data are then analysed by a script that runs every hours for data quality check. A more advanced analysis is done off-line to extract physical information from the data. On figure~\ref{fig:data_trend} one can see the trend of data recorded over a day while the detectors where moving along the S-direction. 151 151 152 \begin{figure}[ !htb]152 \begin{figure}[htbp] 153 153 % \vspace*{-.5\baselineskip} 154 154 \centering … … 163 163 164 164 165 \begin{figure}[ !htb]165 \begin{figure}[htbp] 166 166 % \vspace*{-.5\baselineskip} 167 167 \centering … … 173 173 \end{figure} 174 174 175 176 \begin{figure}[htbp] 177 % \vspace*{-.5\baselineskip} 178 \centering 179 \includegraphics[width=250pt]{Signal.eps} 180 \caption{XXX Example of data recorded during one day. During that day the detectors were moving along the linac axis. The 3 different lines correspond to 3 different regimes: grating retracted (upper line, SPM and LPM).} 181 \label{fig:data_trend} 182 % \vspace*{-\baselineskip} 183 \end{figure} 184 185 186 187 175 188 \section{Bunch profile reconstruction} 176 189 \section{Simulations}
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