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\section{The LUPM project for LSST (3 pages)}  \subsection{Scientific Perimeter of the project}  \begin{itemize}  \item On parle de DM, de BAO, de photo-z  \end{itemize}  \subsection{Planned Activities}  \begin{itemize}  \item On parle de photométrie, de GAIA  \item On parle de computing  \item On parle d'analyse de surveys existants  \item On parle de code et de computing  \end{itemize}  \subsection{Short term Work Plan}  On parle de la manière dont on a/va démarré(er)  \begin{itemize}  \item FORS2 et les modélisations de galaxies  \item FRANZONA pour le code BAO  \item Participer au benchmarking du code LPSC de photo-z, et en profiter pour se familiariser avec les grands surveys spectro-photo  \item software de test des senseurs, interactions avec LPNHE  \item Photométrie et CFHTLS dataset + étude du stack  \end{itemize}    Contribution technique :  NB: L'ensemble des donnees seront residentes au cc ... gros avantage par rapport aux anglais par ex ...  - Le calcul : Dominique Boutigny (+ Pierre Antilogus pour le Level 3)  DC / pipeline (Se préparer au Level 3 c'est l'objectif à terme)  Se former au passage à l'analyse de ce type de donnees.  Actuellement : Marseille, LAL, Clermont, Dominique Boutigny  - La camera : Pierre Antilogus  Participation au calcul dans le cadre des tests camera et la compréhension des senseurs.  Aider le LPNHE a avoir les contacts scientifiques avec SLAC.  Actuellement : LPNHE  Contribution scientifique :  - Photo-z : Marc Moniez  * plan de travail discuté au sein du groupe de travail LSST-photo-z  * première note interne ecrite  - Long terme : participation au DESC = BAO  (Perspective à court, moyen et long terme à identifier dans chaque cas + identifier les gens qui valident le plan de travail)  \subsection{Technical contribution}  An important aspect of our project is that it does not involve and instrumental effort, which would have been difficult to implement with the limited instrumental manpower at LUPM, and would have immediately put the LUPM on the critical path, in the current French context of a planned delivery of the test bench for the filter changer by the end of 2014. While the instrumental teams of LUPM and LPC-Clermont did have some level of collaboration related to LSST, this took the form of a ``Contrat d'Engagement Technique'' between the two labs, and not an activity within the project. We still mention it here because it does represent an example where the LUPM is well integrated and known in the LSST French community.  Nevertheless, taking part to the construction of an instrument is always beneficial to the in-depth understanding of its performance. In this regard, the LUPM team has investigated with the team at LPNHE, leader in France on the camera focal plane instrumentation, some possible areas of collaboration. They identified one area of immediate and concrete interest : the interfacing of the camera testing effort at LPNHE with the global software system developed and managed in the U.S.A., and notably SLAC for the electro-optical test implementation and quality control framework for logging and persistence of the results. Taking this interfacing effort in charge gives an entry point to the LUPM team to learn the basics of CCD behavior and performance, crucial to many key science topic as the photometry or point spread function estimates, while it provides a welcome help to the LPNHE team in this transition phase toward a production activity completely integrated to the global LSST production framework. Furthermore, this activity completely enters into the core technical   activity that the LUPM team is putting forward in its proposal, which is precisely a contribution to software and computing efforts, that we now detail.  As mentioned in \secref{context}, the computing effort that LSST-France is planning to undertake is very significant. Besides, the French LSST computing group is already involved in large-scale processing with the LSST official reconstruction software (called `LSST stack') in the context of data challenges involving SDSS Stripe 82 data in 2013 and CFHTLS data in the near future. These data challenges represent a workhorse for the French LSST community to take steps into understanding in details the LSST reconstruction software, in order to eventually take leadership in some aspects of it, for instance when it comes to correctly implementating low-level sensor responses. The technical contributions of LUPM thus revolves around the following three computing efforts, which are already a significant part of LSST-France activities, and to which members of LUPM are already taking part :  \begin{itemize}  \item Stack and camera  \item distributed computing  \item software development  \end{itemize}  {\color{red}(parler à la fin de cette section de la présence de JCT dans l'organigramme?)}    \subsection{Implementation and Milestones}  nothing yet