this is for holding javascript data
Andreas Luedeke edited sectionPROPOSED_SECO.tex
about 9 years ago
Commit id: 66ec896782ca6b801ab5912578cc55165b3b3c31
deletions | additions
diff --git a/sectionPROPOSED_SECO.tex b/sectionPROPOSED_SECO.tex
index 6b6f1fe..5f9e414 100644
--- a/sectionPROPOSED_SECO.tex
+++ b/sectionPROPOSED_SECO.tex
...
{\em ALBA:} is continuously monitoring the electron transverse beam size with a pinhole that uses the X-rays part of the synchrotron radiation produced in a bending magnet.
The image is visually controlled in real time at the control room and automatically recorded on the ALBA database. Nominal beam sizes at the monitor are
60\,\mu m 60\,$\mu m$ in horizontal and 30$\,\mu m$ in vertical.
Any deviation from the usual beam size by more than 20\% in any transversal plane is registered as a beam incidence and the beamlines are informed about it.
...
{\em SLS:} does not have an on-line bunch purity measurement available.
We measure our filling pattern measured by the means of an avalanche photo-diode and a fast ADC.
Alarms are set for a deviation of single bucket charge from the nominal by more than
1$\,nC$. 1\,nC.
The nominal charge in the bunch train is about
1$\,nC$, 1\,nC, alarms are raised at bunch charges of 0 or above
2$\,nC$. 2\,nC.
Those events are currently very rare and not covered by the automatic operation event recording.
A new, more precise digitiser will be implemented beginning of 2015.
With that device we plan to define tighter alarm limits and use the automatic operation event recording.
...
\begin{table}
\centering
\caption{Distorted-filling \caption{\label{table:filling_limits}Distorted-filling limits for different
facilities\label{table:filling_limits}} facilities}
\begin{ruledtabular}
\begin{tabular}{lrp{3.75cm}}\hline
\textbf{Facility}&\parbox[t]{2.25cm}{\textbf{Bunch charge deviation}}&\textbf{Remark}\\[3.5mm]\hline
...
E.g. if less than one hour is between two beam trips then the time in-between is counted as downtime.
This can be defined as an extra failure mode: 'short-user-time'.
The limit of what time is too short for user experiments depends on the time the facility needs to get into thermal equilibrium and on the typical length of a measurement at an experiment.
Each facility should define this cutoff time limit
$T_{\mbox{short-user-time}}$; $ T_{\mbox{short-user-time}}$; it may depend on the operation mode.
{\em ALBA:} considers 'Short-user-time' as 'no-beam' events if the interval between beam delivery and trip is less than about 30 minutes; although at the moment there is no official number for this short-user-time but a common sense rule is used.
...
in yearly statistics to the public.
\begin{table}
\centering
\caption{Schedule \caption{\label{table:sf_limits}Schedule accounting at different
facilities\label{table:sf_limits}} facilities}
\scriptsize
\begin{ruledtabular}
\begin{tabular}{lp{1.1cm}p{1.2cm}p{1.5cm}p{1.5cm}p{1.2cm}}\hline