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Muon PRS meeting January 21 st , 2003

Norbert Neumeister CERN EP / HEPHY Vienna. Muon PRS meeting January 21 st , 2003. Muon Barrel Geometry Description. Introduction. We are going to move to XML and DDD I had a look at the current geometry description the return yoke is already built, so cross-check with reality!

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Muon PRS meeting January 21 st , 2003

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  1. Norbert Neumeister CERN EP / HEPHY Vienna Muon PRS meetingJanuary 21st, 2003 Muon Barrel Geometry Description

  2. Introduction • We are going to move to XML and DDD • I had a look at the current geometry description • the return yoke is already built, so cross-check with reality! • barrel geometry is more complicated than endcap geometry • New Geometry project: • Geometry/Muon/ • MuonGeometry, MuonSensDet, SimulationData, ReconstructionData • Simulation – Reconstruction geometry • active geometry (chambers) • passive geometry (return yoke, iron, coil)  needed for propagation • magnetic field geometry  NEW • for simulation we use active and passive geometry • for reconstruction we use only active geometry (only for GEANE propagation the full geometry is used) • Geometry description: • muon.tz mb.tz, me.tz, xml files, engineering drawings(AutoCAD) • describes: coil, return yoke, tail catcher, support structure, chambers • structure is not very complicated • XML files are readable (understandable) Norbert Neumeister HEPHY Vienna

  3. Reality vs. Simulation Norbert Neumeister HEPHY Vienna

  4. Details Norbert Neumeister HEPHY Vienna

  5. Details Norbert Neumeister HEPHY Vienna

  6. MBXX MBXX MBXX MBXX MCXX Structure MUON/MB MCXX central wheel MBXX 4 non-central wheels MBXC cables on top of detector MBCA_x_MB (x = 1-24) cables G4 box (non sensitive) MCXX RB1 M_Steel-008 G4Trap RB11 M_Thick_Steel-008 G4Trap RB2M_Steel-008 G4Trap RB22 M_Thick_Steel-008 G4Trap RB3M_Steel-008 G4Trap RB33 M_Thick_Steel-008 G4Trap MYBL_x_MCXX (x = 1-36) G4Box M_Steel-008 MBAT tail catcher G4Box Copper MBIC MBBT HB0 in front of first muon station G4Box M_B_Air this structure can not be used if the chimneys are included! return yoke Norbert Neumeister HEPHY Vienna

  7. Central Wheel MCXX/RB3 simple trapezoids MCXX/MBAT simple boxes MCXX/ MYBL_x_MCXX simple boxes Norbert Neumeister HEPHY Vienna

  8. Central Wheel same material? Norbert Neumeister HEPHY Vienna

  9. AutoCAD Norbert Neumeister HEPHY Vienna

  10. Yoke – Basic Shapes same material? 2 reality 1 3 4 trapezoids + boxes 1 2 geometry description Norbert Neumeister HEPHY Vienna

  11. Central Wheel with Chambers Norbert Neumeister HEPHY Vienna

  12. Chambers Muon/MB/MCXX Muon/MB/MBXX MB1S 12 chambers of station 1 MB2S 12 chambers of station 2 MB3S 12 chambers of station 3 MB4S 6 chambers of station 4 MB5S 2 large chambers on top of station 4 MB6S 2 small chambers at bottom of station 4 MB7S 2 large chambers at bottom of station 4 …”chamber envelops” Norbert Neumeister HEPHY Vienna

  13. Central Wheel with Chambers MB5S MB4S MB3S MB2S MB1S MB6S MB7S Norbert Neumeister HEPHY Vienna

  14. Central Wheel MBCA_4_MB Norbert Neumeister HEPHY Vienna

  15. Central Wheel Norbert Neumeister HEPHY Vienna

  16. Details Norbert Neumeister HEPHY Vienna

  17. Problems position of chambers should be a trapezoid and not a box! non-magnetic material! Norbert Neumeister HEPHY Vienna

  18. AutoCAD missing! Norbert Neumeister HEPHY Vienna

  19. Problems Norbert Neumeister HEPHY Vienna

  20. Chamber Structure MB1S MHB1 MHC1 honeycomb structure MHAA_2_MHB2 electronics minicrates MHAA_3_MHB2 electronics minicrates MHAA_1_MHB2 electronics minicrates MHAA_4_MHB2 electronics minicrates MB1X outer 2 Z layers MB1Z inner 2 Z layers MB1R outer 2 R layers MB1Y inner 2 R layers MB1K ????? MB1L aluminum plates RP1I inner RPC RP1O outer RPC Norbert Neumeister HEPHY Vienna

  21. Chambers Norbert Neumeister HEPHY Vienna

  22. DT Chambers 12 Layers per DT: 4 z, 8 (r,f) wire pitch 4.2 cm honeycomb layer Position for minicrate (front-end, trigger electronics) B ~ 1 T 2-4 m 30 cm 4 layers „non-bending“ qSuperlayer 2 x 4 layers „bending“ fSuperlayer drift cell Norbert Neumeister HEPHY Vienna

  23. AutoCAD Norbert Neumeister HEPHY Vienna

  24. Summary • XML files: malg.xml, mb.xml, me.xml • for the time being just a copy of the tz-files • chimneys are not included! • at least we should check if there are any major problems • Responsibilities • barrel ??? • endcaps ??? • coil, infrastructure ??? • we need at least one contact person! • Work to be done • check position of chambers • check materials and shapes • fix known problems: yoke geometry, (coil?) • create magnetic field geometry (Valery Andreev) Norbert Neumeister HEPHY Vienna

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