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EC structure: Baseline Design

EC structure: Baseline Design. ?. ?. ?. ?. ?. ?. IFIC-Valencia. Content…. ENDCAP STRUCTURE COMPONENTS AND ASSEMBLY SEQUENCE INNER CYLINDER DISKS FRAMES SUPPORT BEAMS PETALS SUPPORT RINGS SERVICES CHANNELS RAILS OVERLAP PETALS DISKS SERVICES CONNECTIONS LAYOUT

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EC structure: Baseline Design

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  1. EC structure: Baseline Design ? ? ? ? ? ? IFIC-Valencia

  2. Content… • ENDCAP STRUCTURE COMPONENTS AND ASSEMBLY SEQUENCE • INNER CYLINDER • DISKS • FRAMES • SUPPORT BEAMS • PETALS • SUPPORT RINGS • SERVICES CHANNELS • RAILS • OVERLAP • PETALS • DISKS • SERVICES CONNECTIONS LAYOUT • ENDCAP LAYOUT 2D ENVELOPE • PETAL MASS ESTIMATION • SERVICES MASS ESTIMATION • - CONCLUSIONS

  3. CF Inner Cylinder Apertures on Outer cylinder to permit services exit 8 support bars constrain disks Inner cylinder with 4 different diameters to constrain disks and sustain petals Master disk supports entire structure

  4. CFRP-KOREX Disks 1.- Master Disk + Support bars + Inner cylinder 2.- Disks are assembled into the structure.

  5. CF Frames

  6. Lateral Support Beams

  7. Services Support Rings

  8. (4/16) Rows of Petals: Insertion

  9. (4/16) Rows of Petals: Services and Testing

  10. (12/16) Rows of Petals: Insertion

  11. (12/16) Rows of Petals: Services and Testing

  12. Outer Cylinder Rails: EC Insertion

  13. ENDCAP Envelope

  14. Petals: Sensors Overlap Rout: 11mm Overlap angle: 12mrad ATLAS PROJECT DOC No: Utopia V1.0 N.P. Hessey Rin: 4mm

  15. Disks: Sensors Overlap Y Rin: 4mm Disk rotation is not allowed by this design X Overlap angle: 12mrad (as example) Disk could be reflected 180º (plane XY) No Disk overlap; symmetry is maintained by sensors on both petal sides on every Disk and therefore Petals are reduced 11mm at Outer radius. With Disk overlap symmetry is maintained by only sensors on one Petal side on every Disk. Rout: 11mm 11.25º 11.25º

  16. Services Connections 2D-Layout: conflictive area NO MANIFOLDING IS CONSIDERED CONNECTION POSSIBLE? IF NOT DIF. PIPES PER DISK 1.4m

  17. Service channels: preliminar 3D Layout Very preliminar 3D layout. It is required to understand connectors first.

  18. Accessible area after services 1.4m

  19. Services & Petals Mass Estimation • Services estimation includes: • Opto fibers • HV cabling • LV cabling • Inlet and Outlet capillaries • DCS • Al service channel

  20. Conclusions • All dimensions have to be confirmed with FEA. The area between the 1 disk (closest to the interaction point) and the pixel disks is already a problem with this new layout. Also the distance between disk 1 and 2 difficulties petal insertion. • This design allows Petals back sensors to be rotated (ᶲ 12mrad: 11mm overlap at outer radius “ATLAS Doc. Utopia V1 N.P. Hessey”). This design does not allow Rotating Disks, an additional overlap of 11mm at outer radius could be achieved by reflecting the Disks about the plane XY. If this second overlap is not so determinant then Petals can be reduced 11mm at outer radius. • Once all services are installed, Petal insertion is not possible for the 4 rows (20/160 petals) of petals close to the lateral supports. Next thing to do will be to understand properly which connectors can be used for the piping services and develop a full 3D services layout taking into consideration also cabling concerns. It would be interesting to determine the stress induced by all these services over the petals and Disks because of the reduced space left to fit them all. • As the distance from first to last disk is about 1,4m. No manifolding has being considered for services estimation over the envelope area. If manifolding is required and it is also required between 1 and 1,5m from petals connections to manifold because of pressure concerns; manifold connections should be placed on area 3 on next slide to allow petal insertion.

  21. BackUp Slide from C. Bault presentation Upgrade week CERN2009

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