Changeset 593 in ETALON for papers


Ignore:
Timestamp:
May 2, 2016, 1:40:10 PM (8 years ago)
Author:
delerue
Message:

Papier acceleration laser-plasma

Location:
papers/2016_IPAC
Files:
16 added
2 deleted
1 edited

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  • papers/2016_IPAC/MOPMB002_SPESO/MOPMB002.tex

    r516 r593  
    124124On 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}.
    125125
    126 \begin{figure}[!htb]
     126\begin{figure}[htbp]
    127127%   \vspace*{-.5\baselineskip}
    128128   \centering
     
    135135Two 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}
    136136
    137 \begin{figure}[!htb]
     137\begin{figure}[htbp]
    138138%   \vspace*{-.5\baselineskip}
    139139   \centering
     
    150150During 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.
    151151
    152 \begin{figure}[!htb]
     152\begin{figure}[htbp]
    153153%   \vspace*{-.5\baselineskip}
    154154   \centering
     
    163163
    164164
    165 \begin{figure}[!htb]
     165\begin{figure}[htbp]
    166166%   \vspace*{-.5\baselineskip}
    167167   \centering
     
    173173\end{figure}
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     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}
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    175188\section{Bunch profile reconstruction}
    176189\section{Simulations}
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