Andreas Luedeke edited sectionPROPOSED_SECO.tex  about 9 years ago

Commit id: 0127846af8cb653b6481c3a800cdf3d4001a1a96

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There is an alarm set for a 'low-lifetime' event in the PANIC application.   {\em BESSY2:} has states  excessive rates for the beam losses if the lifetime at 300\,mA drops below fife five  hours. Then the radiation protection interlock prevents injections and enforces "decaying beam".   As a failure this mode is covered by the 'Low-beam-current' events. 

\scriptsize  \begin{ruledtabular}  \begin{tabular}{lcrrl}  \textbf{Facility}&\textbf{Mode}&\textbf{$ \tau $(normal)}&\textbf{$ \tau $(low)}&\textbf{Remark}\\\hline \textbf{Facility}&\textbf{Mode}&\textbf{$\tau_{\hbox{normal}}$}  &\textbf{$\tau_{low}$}  &\textbf{Remark}\\  & & (h) & (h) & \\\hline  ALBA & decay & 22$\,$h 22  & 18$\,$h 18  & not evaluated \\ ALBA & top-up & 22$\,$h 22  & 18$\,$h 18  & not evaluated \\ BESSY2 & MB & ??? 7  & 5$\,$h 5  & stops top-up \\ BESSY2 & SB & ??? 2  & ??? 1  & \\ Elettra & 2.0$\,$GeV & 23$\,$h 23  & ??? & \\ Elettra & 2.4$\,$GeV & 27$\,$h 27  & ??? & \\ LNLS-UVX & decay & $ > $14$\,$h $14  & not defined & \\ PETRA III & continuous & 12$\,$h 12  & not defined & \\ PETRA III & timing & 1.5$\,$h 1.5  & not defined & \\ SPring-8 & all modes & 15 &15  \dots 50$\,$h 50  & 10$\,$h 10  & \\ SLS & top-up & 8$\,$h 8  & 4.5$\,$h 4.5  & yearly evaluation \\ \end{tabular}  \end{ruledtabular}  \end{table} 

\begin{tabular}{lll}  \textbf{Facility}&\textbf{Distortion} &\textbf{Remark}\\\hline  ALBA & Max +20\% or outage & recorded \\  BESSY2 & RMS $ >0\,\mu >3\,\mu  m$ or outage & recorded \\ Elettra & RMS $ >0.4_x, 0.3_y\,\mu m$ or outage & outage&  recorded \\ LNLS-UVX & Max $ >30_x, >8_y\,\mu m$ & recorded \\  PETRA III & Max $ >500_x, >250_y\,\mu m$ & beam dumped \\  SPring-8 & Max $ >10_x, >5_y\,\mu m$ & abrupt change recorded\\