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\documentclass{chowto}

\title{Target Ladder Operation}
\howtotype{user}
\experiment{HKS}
\author{Mizuki Sumihama}
\category{target}

%\maintainer{Name of person maintaining document} % Optional
\date{June 6, 2005} % Can use \today as the argument

\begin{document}

\begin{abstract}
This Howto outlines how to operate the Target ladder. 
\end{abstract}
 
\section {Operation}

Login any PC of cdaql1 - cdaql6 with 'cvxwrks' and go to /home/cvxwrks/MEDM/HKS. 
Type {\bf ./sst-control.tcl} and see the window of {\bf Sieve slits / Target 
control for E01-011}. You can operate sieve slits and the target ladder from 
this window. The $+$ direction is moving to left on the camera (from the upstream). 
The bottom column is for the target ladder. 

\begin{verbatim}
> 'STOP!'       stop running program. 
> 'tgt1'-'tgt6' move to target#1-6. #1 is at most right side from the upstream. 
> 'AllOut'      move the lader out completry to exchange the ladder. 
> 'Out +10mm'   move out from beamline by +10 mm to fine tuning a position.
> 'In  -10mm'   move into beamlime by -10 mm.
> 'Out +1mm'    move out from beamline by +1 mm.
> 'In  -1mm'    move into beamlime by -1 mm.
> 'Out +0.5mm'  move out from beamline by +0.5 mm.
> 'In  -0.5mm'  move into beamlime by -0.5 mm.
> 'Go home'     move to HOME switch (+0.0) after power recycling. 
\end{verbatim}

To move,  
\begin{enumerate}
\item Push the button of `tgt1' $\sim$ `tgt6' to move the ladder to the 
target 1 $\sim$ 6 position. 
\item See a message 'Moving..' on a right-white window after a few seconds. 
\item After a message of `Stopping...' is shown up, Check the current position on the `Position' window. 
\item Look at the target on the camera and do a fine tuning with the bottom of '+-10', '+-1' and '+-0.5'. 
\item Start run.
\end{enumerate}

In a case of emergency, 
\begin{itemize} 
\item Push the button of `STOP!' to stop running program. 
\end{itemize} 

\section{Status/Error message}

You can see status message in a column on a right hand side.  
\begin{itemize}
\item `Stopping'/`Moving' message for a motor status. DO NOT move again 
 during `Moving'
\item `$\pm$ limit latched'/`$\pm$ limit UNlatched' for status of limit 
switches. MOVE to the $\pm$ direction in case of `$\mp$ limit UNlatched'. 
\item You may see ERROR message on a bottom of the window.  

\end{itemize}

\section {Positions list}

These are values of target positions. 

\begin{table}[h]
\vspace*{-0.5cm}
\begin{center}
\caption{Positions list for target. Unit is about 1 mm.}
\label{posi}
\begin{tabular}{|c|c|} \hline
name     &  positions\\ \hline
Target 1 & -150.8  \\ \hline
Target 2 & -171.1  \\ \hline
Target 3 & -191.5  \\ \hline
Target 4 & -211.8  \\ \hline
Target 5 & -232.1  \\ \hline
Target 6 & -252.3  \\ \hline
Empty & 35.0  \\ \hline
\end{tabular}
\vspace*{-0.cm}
\end{center}
\end{table}

\section {Trouble shooting}

\begin{itemize} 
\item Often, the screen is hanged up. When the status doesn't change, close the screen 
  and reopen it.
\item After a power down and a recycling, we need to adjust the zero(0.0) position. 

\begin{verbatim}
> Push the button of 'Go home'.  
> In case of '+limit latched', 
   push the button of '-10 mm' and 'Go home'
> In case of '-limit latched', 
   push move +300 mm with the button of '+10 mm' and 'Go home'
\end{verbatim}

\item If the target does not move, check the second column for the current position on the screen. 
The background color is 'pink' in case of No fault and is 'red' in case of something fault. 
If the color is red, you need to cycle power for the controller which is located 
behind the 'Splitter' power supply. After you go into HAllC, check the controller box. 
In the right side, see LED lights of 'Disable/short'. If the LED is red, it means 'Amp fault'.   
Anyway, In the behind of the rack, there is a plug labeled 'TARGET'. Unplug and plug it for 
power cycling. For a test, push the bottom of '+1mm' and confirm the problem is solved.
Do not forget the zero adjustment.

\end{itemize} 


\section {Motor, Controller and switches}

The motor are mounted at side of a xyz-stage for the target ladder. 
The control box is located at a rack in front of SOS power supplies 
in Hall C as well as the  control boxes for the slit boxes. 
These are operated from hcpc10402 (pc104 board PC) remotely. 
Current positions and status are read out and stored in EPICS and data. 

Two limit switches for negative and positive positions, and home 
switch are placed on the sides.     

\end{document}

% Revision history:
% $Log: target-control.tex,v $
% Revision 1.1.2.4  2005/06/16 13:44:39  saw
% Expand troubleshooting
%
% Revision 1.1.2.3  2005/06/06 21:23:48  saw
% New version from Sumihama
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% Revision 1.1.2.2  2005/05/20 03:57:26  saw
% Update from Nue
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% Revision 1.1.2.1  2005/05/13 13:42:07  saw
% Initial version
%