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					                          PMD Geometry – Changes

 Documentation :

http://www.veccal.ernet.in/~pmd/ALICE/Software/Geometry/ali_geometry.html




        Recap :

          Super modules  Modules
          There will be 24 x 2 Modules, HV insulated and
          fed with separate gas in and out systems




        Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,   1
                                    Kolkata : 24th April 2006
                  PMD Geometry – Tree




Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,   2
                            Kolkata : 24th April 2006
                       PMD Geometry – Tree

                                  EUM1



  EBPA                       ESSA (SS boundary)                        EBKA
(Base plate)
            (FR4 insulation) EDGA                                     (Back plane)

                                  ECGA (Air gap)


          EBPA                    EHC1                          EBPA
        (Bottom PCB)                                            (Top PCB)
                                 Cell
                         (Sensitive volume – gas)
     Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,         3
                                 Kolkata : 24th April 2006
                         PMD Geometry – Components
Cell                                                     Strip




                                 Array




       Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,   4
                                   Kolkata : 24th April 2006
                  PMD Geometry – components

                    6 modules in one sector




Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,   5
                            Kolkata : 24th April 2006
                  PMD Geometry – Arrangement

             Modules in a plane of PMD
             First cell position and strip arrangement




Bedanga Mohanty     STAR/ALICE PMD collaboration meeting, VECC,   6
                             Kolkata : 24th April 2006
   PMD Geometry – component placement
Component placement                               Various place




 Bedanga Mohanty   STAR/ALICE PMD collaboration meeting, VECC,    7
                            Kolkata : 24th April 2006
PMD Geometry – Electronics arrangement
                                                                 Mriganka, Sidharth, Pawan

                  FEE boards placement




Bedanga Mohanty    STAR/ALICE PMD collaboration meeting, VECC,                   8
                            Kolkata : 24th April 2006
  PMD Geometry – Numbering Scheme




 Preshower Plane : 0
 Veto Plane     : 1


Bedanga Mohanty   STAR/ALICE PMD collaboration meeting, VECC,   9
                           Kolkata : 24th April 2006
                      PMD Geometry – TGeo




                                                 Info in <TGeoManager::Close
                                                 Geometry>: 449813 nodes/ 48
                                                 volume UID's in default geometry



Info in <TGeoManager::CheckOverlaps>: Checking overlaps for Geometry within a
limit of 0.01 Info in <TGeoManager::CheckOverlaps>: number of illegal
overlaps/extrusions : 0

         Bedanga Mohanty   STAR/ALICE PMD collaboration meeting, VECC,      10
                                    Kolkata : 24th April 2006
                      PMD Geometry – Alignment
    Alignment Macro

    http://www.veccal.ernet.in/~pmd/ALICE/Software/Geometry/alignment.C

    Cell Position

http://www.veccal.ernet.in/~pmd/ALICE/Software/CoordinateSys/getcellposition.C




         Bedanga Mohanty   STAR/ALICE PMD collaboration meeting, VECC,   11
                                    Kolkata : 24th April 2006
                  PMD – Chain, TB/BB arrangement
Chain Configuration

http://www.veccal.ernet.in/~pmd/ALICE/ELECTRONICS/chain.html




Translator Board and Bridge Board Arrangement



  http://www.veccal.ernet.in/~pmd/ALICE/ELECTRONICS/TB.html




     Bedanga Mohanty   STAR/ALICE PMD collaboration meeting, VECC,   12
                                Kolkata : 24th April 2006

				
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