PANDA Mechanical Workshop Backward Endcap Calorimeter Geometry David Rodríguez Piñeiro GSI Darmstadt PANDA Mechanical Workshop GSI

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop2 Backward Endcap EMC 1.– Requirements - Boundary Conditions - Dimensions 2.– Geometry & Setting - Geometry - Interaction with STT - Interaction with MVD - Interaction with Beam Pipe 3.- Next Step - Fixing in the Assembly 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop3 Backward Endcap EMC Distance Target-BW Endcap560 mm Maximum Outer Radius448 mm Minimum Inner Radius150 mm Boundary Conditions 1.– Requirements - Boundary Conditions - Dimensions 2.– Geometry 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop4 Backward Endcap EMC Crystals DimensionsStraight Geometry Length 200 mm Face 24,4x24,4 mm (barrel smallest back face crystal) Picture 1.– Requirements - Boundary Conditions - Dimensions 2.– Geometry 3.- Next step 4.- Summary Dimensions Straight Geometry: 0,6284 str

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop5 Backward Endcap EMC 2.– Geometry & Setting

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop6 Backward Endcap EMC Geometry 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary 540 Crystals 424 Crystals 488 Crystals

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop7 Backward Endcap EMC Interaction with the STT (I.a) Ring: Same volume 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop8 Backward Endcap EMC Interaction with the STT (I.b) Carbon Fibre Tray Fulfils the STT Cabling requirements 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop9 Backward Endcap EMC Interaction with the STT (II.a) Different Outlet 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop10 Backward Endcap EMC Interaction with the STT (II.b) Carbon Fibre Tray Fulfils the STT Piping requirements 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop11 Backward Endcap EMC Interaction with the STT (III) 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop12 Backward Endcap EMC Interaction with the MVD Space Beam Pipe-BW Endcap mm 2 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop13 Backward Endcap EMC Interaction with the Beam Pipe (I) Maximum Angle from the Target 17,17º 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary First Crystal starts at R183,50 mm (z=-594)

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop14 Backward Endcap EMC Interaction with the Beam Pipe (II) Beam Pipe Flange 1100 mm from the Target 1.– Requirements 2.– Geometry & Setting - Geometry - Interaction STT - Interaction MVD - Interaction Beam Pipe 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop15 Backward Endcap EMC 3.– Next Step

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop16 Backward Endcap EMC Fixing in the Assembly Hold the Endcap in 4 or 8 Points in the Backward DIRC Support Ring 1.– Requirements 2.– Geometry & Setting 3.- Next step - Fixing the Assembly 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop17 Backward Endcap EMC Geometry: Cutting in 4 sides (up-down-left-right) Space for the STT (Cabling & Piping): Enough Space for the MVD (Cabling & Piping): To Discuss Angle for the Beam Cone: 17,17º Maximum Fixing: In the Backward DIRC Support Summary 1.– Requirements 2.– Geometry & Setting 3.- Next step 4.- Summary

02/04/2009David Rodríguez Piñeiro - GSI Darmstadt - Mechanical Workshop18 Backward Endcap EMC Personal Contact: Tel: +49 (0) /1634 www-panda.gsi.de Thank you!