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\title{Brief Article}
\author{The Author}
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\begin{document}
\section{Angle - Offset at Inflector Exit}
We find that positive angles push optimum kicker field higher. Thus suggesting that the beam was coming out at a positive angle and that's why the kicker voltage does not plateau. 
Negative angles push optimum lower. At higher fields the residual CBO at optimum kick is near zero. 
At negative angles residual CBO at optimal kick is high. Thus suggesting that the angle is indeed negative since our measured CBO is large. But then why doesn't it increase further
as voltage is reduced? Of course optimum capture and minium residual CBO is at zero angle. Also, CBO as measured with fiber harps (in simulation) definitely 
increases with less than optimal kick. That is, increasing amplitude with decreasing kick. This is evident in simulation with fiber harps but not so much in data, where there is little dependence.
And where we might have thought that this was because the harps were already at their limit (with 5 fibers), that is clearly not so now with 7 fibers. At least not in the simulation. 

Optimal inflector current is higher in E981 than in E821. The higher field could be to compensate an inward going (negative) inflector exit angle.
And now we have a new measurement that shows that inflector vs capture plateaus for 55kV kickers and peaksm(at 2780 A (higher than 821) and turns over at 60 kV kicker.
Does this tell us anything about exit angle? 

Scan capture vs inflector field for optimal kick and sub optimal. Already have scan of capture vs kick for inflector field error $\frac{\Delta B}{B}=0,\pm 1\%$.

scan plateau? Try an inflector scan at 70\% kick and see what happens. 

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[trim = 0mm 0mm 0mm 0mm, clip=.false.,width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vcompare2_infl_scan.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_angle_offset_scan.pdf}
 \caption{Tuneshift as a function of betatron amplitude for each of the quadrupole multipoles (lines) and as computed in tracking simulation (squares) for
 three different amplitudes.
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_compare2_-1mrad.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_compare3_angles.pdf}
 \caption{Tuneshift as a function of betatron amplitude for each of the quadrupole multipoles (lines) and as computed in tracking simulation (squares) for
 three different amplitudes.
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_compare4_measured_kicks.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_compare_measured.pdf}
 \caption{Tuneshift as a function of betatron amplitude for each of the quadrupole multipoles (lines) and as computed in tracking simulation (squares) for
 three different amplitudes.
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_energy_offset_scan.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_inf_error_kick_scan.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_inflector_angle.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_kick_scan_vs_inf_Error.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/injection_scans/Vparam2_xoffset_scan.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/Vparam2_compare.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/Vparam2_compare3_measured.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/Vparam2_compare_measured.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/Vparam2_single.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/kicker1_pulse.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/kicker_pulse&halftail.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/kicker_pulse.pdf}
 \caption{
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/kicker_pulse_and_halftail.pdf}
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/presentations/kick_scans/near-ideal-kicker-pulse.pdf}
 \caption{Tuneshift as a function of betatron amplitude for each of the quadrupole multipoles (lines) and as computed in tracking simulation (squares) for
 three different amplitudes.
 \label{mp_tuneshift}}
\end{figure}

\begin{figure}[htbp] %  figure placement: here, top, bottom, or page
   \centering
\includegraphics[width=3.2in]{/Users/dlr10/development/bmad_dist/g-2/documentation/figures/incident_exit_offset_angle.pdf}
\end{figure}
\end{document}  
