1. ?
ENDCAP: Mechanics
IFIC-Valencia

2. Petal Concept: Components
Petal mass estimation
Mass (g)
Facings + Honeycomb + Epoxy
227,9
POCOFOAM
50,6
SS Pipe
73,4
SMC 95
CGL 60
Bus Cable + Epoxy
85,3
Silicon
107,5
Chips
12,4
Hybrid + BeO + Epoxy
116,5
Total
828,6

3. Petals: Sensors Overlap and Dimensions
Rout: 958mm mm
Silicon
Rout: 951mm
Overlap Rout: 3mm
Silicon
Rin: 334.5mm
Overlap Rin:
3mm
80mm
Rin: 327mm

4. Petals: Sensors Overlap and Dimensions
Rout: 958mm mm
Rout: 11mm
Silicon
Rout: 951mm
Overlap angle: 12mrad
ATLAS PROJECT DOC No:
Utopia V1.0
N.P. Hessey
Silicon
Rin: 334.5mm
Rin: 4mm
90mm
Rin: 327mm

5. Disks: Sensors OverlapY
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

6. Short Strips on rings 4 & 5 8 6
2x10
4x8
4x6
2000 μW/mm2
1700 μW/mm2

7. Thermal Runaway 8 6
2x10
4x8
4x6

8. How does layout affects to Petals?
3 different Disks and 4 different Petals
Covering from R325 up to R950mm
Similar distances between disks
120mm clearance to barrel and pixel
1 different Disks and 2 Petals shapes
Covering from R336 up to R951mm
Different distances between disks; different petal insertion.
60mm clearance to barrel and less than 20mm to closest pixel disk

9. 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

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

11. CF Frames

12. Lateral Support Beams

13. Services Support Rings

14. (4/16) Rows of Petals: Insertion

15. (4/16) Rows of Petals: Services and Testing
40 petals from 160 (25%)

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

17. (12/16) Rows of Petals: Services and Testing

18. Outer Cylinder Rails: EC Insertion

19. ENDCAP Envelope

20. Services: cabling Capillaries Services estimation includes:
Opto fibers x18
HV cabling x18
LV cabling x2
Inlet and Outlet capillaries
DCS x18
Al service channel
Capillaries
Total per petal (g/mm) 0,
Total per Disk (g)
Services Disk 1: from z: 2956mm to z: 1376mm
19972,5192
Services Disk 2: from z: 2956mm to z: 1476mm
18708,43571
Services Disk 3: from z: 2956mm to z: 1744mm
15320,69194
Services Disk 4: from z: 2956mm to z: 2141mm
10302,28047
Services Disk 5: from z: 2956mm to z: 2791mm
2085,737765
Total 5 Disks (g)
66389,66509

21. Accessible area after services
40 petals from 160 (25%)
+12 (32,5%)
+12 (40%)
1.4m

22. Services Connections 2D-Layout: conflictive area
MANIFOLDING CONNECTIONS: AREA 3
CONNECTION POSSIBLE? IF NOT DIF. PIPES PER DISK
1.4m

23. Next Steps: Electrical Services, SMC, connectors
Petal insertion
- 3points support

24. Next Steps: F.E.A. Disks & Rings

25. Next Steps: 3D Layout Services
Connectors or dif. Pipes?
Pressure Losses admissible?
Manifold X4? X5?
3D Layout Services

26. Next Steps: Mechanical Tests SETUP
Deflections
Modal test
All possible information to check F.E.A
Thermal Test / Electrical prototype?
CO2 cooling plant
Thermal camera
CMM o Vision CMM?