source: ETALON/papers/2019_IPAC/i3d_perspectives/poster/poster_i3D.tex @ 803

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%       TITLE AND AUTHOR NAME
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{
\vspace{1ex}\\
\raggedright
\textcolor{darkgray}{\small IPAC'19  - THPTS008}\\
\raggedleft
        \includegraphics[scale=0.8]{logo_depacc_1200}
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        \includegraphics[scale=0.05]{logo_Universite_Paris_Saclay_versionHD.jpg}
        \includegraphics[scale=0.09]{logo_CNRS_27-02-2019.pdf}
\vspace{1ex}\\
\sf\bf Prospects of Additive Manufacturing for Accelerators
} % Poster title
{
        \raggedright
        \vspace{1em} St\'ephane Jenzer,  Nicolas Delerue $^1$, {\em LAL, Univ. Paris-Sud, CNRS/IN2P3, Universit\'e Paris-Saclay, Orsay, France}\\
        Pierre Manil,  {\em CEA-DRF-IRFU, Universit\'e Paris-Saclay, Saclay, France}\\
        Romain Gerard,  {\em CERN, Geneva, Switzerland}\\
        Philippe Repain,  {\em LPNHE, CNRS/IN2P3, Paris, France}\\ 
        Hervé Carduner,  {\em  SUBATECH, CNRS/IN2P3, Nantes}\\
        Aude Simar,  {\em  UCL, Louvain-la-Neuve, Belgium}\\
        \textcolor{darkgray}{
                \smaller $^1$delerue@lal.in2p3.fr\\
        } \vspace*{1cm}
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{
} 

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%----------------------------------------------------------------------------------------
%       INTRODUCTION
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%\vspace*{3mm}

\headerbox{Introduction}{name=introduction,column=0,row=0}{

Additive manufacturing allows the production of mechanical components often much faster than traditional manufacturing. Several accelerators components built using additive manufacturing have already been qualified for use in accelerator. A workshop was held in Orsay in December 2018 to discuss the prospects of using additive manufacturing for particle accelerators and particle detectors. We report here on the prospects as far as accelerators are concerned.

The programme of the workshop and the presentations given at that occasion are available at {\tt http://programme.i3d-metal.fr/}

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}

\headerbox{Advantages and challenges}{name=something,column=0,row=0,below=introduction}{

{ \bf \Large Advantages and techonological challenges of i3D manufacturing at accelerators} 

{\bf \large Advantages:}
\begin{itemize}
\item Topological optimisation
\item  New shapes:
\begin{itemize}
\item Embedded cavities
\item Colling channels
\item Mesh structures
\end{itemize}
\item More economical on complex parts
\item Faster
\item More accurate
\item Repair old parts

\end{itemize}

{\bf \large Challenges:}
\begin{itemize}
\item UHV compatilibility       
\item Electrical conductivity
\item RF
\item New materials
\item New alloys
\item Multi-materials
\item Mechanical strength
\end{itemize}

{\bf \large Issues:}
\begin{itemize}
        \item Postprocessing
        \item Surface quality
        \item Machine to machine reproductibility
\end{itemize}

}




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%       RESULTS 1
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\headerbox{Tensile strength}{name=dispo,span=1,column=1,row=0}{ % To reduce this block to 1 column width, remove 'span=2'

Studies are ongoing to understand the tensile strength of samples printed using metal additive manufacturing. Different printing processes have been used to allow comparison. {\bf  For more detail see WEXXPLS3 during  this conference}.

\begin{center}
\includegraphics[width=48mm]{eprouvettes_i3D.jpg} \\
\end{center}
{\em
         Several samples printed using additive manufacturing with different machine settings or sample orientation. Source: St\'ephane Jenzer (LAL, Orsay).
}

\begin{center}
        \includegraphics[width=60mm]{MEB_i3D.jpg} 
\end{center}
{\em
        Electronic Microscope image of some 3D printed samples, showing the growth direction of the cristals. Source: Gael Sattonay (LAL, Orsay).
}
}
\headerbox{Ultra-High Vacuum}{name=UHV,span=1,column=2,row=0}{ % To reduce this block to 1 column width, remove 'span=2'
        
        Studies have been done to test the Ultra-High Vacuum compatibility of beam pipes produced by additive manufacturing. These beam pipes where then UHV tested and their compatibility was confirmed by the LAL UHV group.
        
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                        \includegraphics[width=25mm]{WEPVA043f1.png} &
                        \begin{minipage}{32mm}
        \vspace{-10mm} \em Beam-pipes after they have been produced by additive manufacturing and before they were removed from the support (source: IPAC'17 WEPVA043).
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\end{tabular}
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        \begin{center}
         \includegraphics[width=55mm]{WEPVA043f5.png} 
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        {\em These beam pipes were UHV tested under static vacuum. The pressure increase was found to be comparable for the UHV samples and for the reference beam pipe (source: IPAC'17 WEPVA043).
        }       
}


\headerbox{Electrical conductivity: BPM, antenna, cavities,...}{name=elec,span=2,column=1,below=dispo}{ % To reduce this block to 1 column width, remove 'span=2'

Several components have been produced that test electrical performances of components produced  by additive manufacturing.

\begin{center}
\begin{tabular}{ccc}
\includegraphics[height=38mm]{THPAL016f2.jpg} & \includegraphics[height=38mm]{waveguide_tests.png} & \includegraphics[height=38mm]{Cavity_i3D.jpg} 
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 {\em 
        Left: Beam Position Monitor produced by additive manufacturing and tested in an accelerator beamline (see IPAC'18 THPAL016 and this conference FRXXPLS1). \\ 
        Center: RF measurement of an additively manufactured waveguide (Source: Alexej Grudiev, CERN, {\tt https://indico.cern.ch/event/275412/contributions/1617680/ } ). \\
        Right: A niobium cavity manufactured in Niobium (source: Romain Gerard, CERN).
}
}

\headerbox{Conclusion}{name=results2,span=1,column=2,below=elec}{ % To reduce this block to 1 column width, remove 'span=2'

\begin{itemize}
\item Significant work is ongoing to qualify additive manufacturing for particle accelerators.
\item Some impressive results have been produced in the past year.
\item Addditive manufacturing allows optimized shapes and complex features.
\item Some challenges still to be addressed.
\end{itemize}

%\input{../THPAL016.bbl}

%\vspace*{1.5mm}
{\em  \small \smaller Workshop supported by IN2P3 ``3D Metal'' innovation program and by the P2I department of the University Paris-Saclay. }

}


\headerbox{References}{name=reference,column=1,row=0,below=elec}{
        
        \begin{flushleft}
                %\cite{1742-6596-874-1-012097}
                %\nocite{Variola:2014qsa}
                %\nocite{ThomX_TDR}
                %\cite{Chung:1991ua}
                %\cite{Nosych:2016tkn}
                %\nocite{1748-0221-8-01-T01001}
                % \printbibliography
                \begin{itemize}
                        \item  IPAC'17 WEPVA043 \\ Study of the suitability of 3D printing for Ultra-High Vacuum applications 
                        \item  IPAC'18 THPAL016 \\ Study of the Performances of a 3D Printed BPM 
                        \item IPAC'19 WEXXPLS3 \\ Is It Possible to Use Additive Manufacturing for Accelerator UHV Beam Pipes?
                        % \\ \item  IPAC'17 WEPVA043 \\ Study of the suitability of 3D printing for Ultra-High Vacuum applications % \\ \url{http://stacks.iop.org/1742-6596/874/i=1/a=012097}
                        %\item PHIL Photoinjector  \url{http://stacks.iop.org/1748-0221/8/i=01/a=T01001}
                \end{itemize}
        \end{flushleft}
}


\end{poster}

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