1 David Santoyo Petal meeting: 24 October 2014 Petal vs Services: design concerns

2 David Santoyo Petal meeting: 24 October 2014 Petal vs services From Afroditi (Nikheff) conclusions… (Itk General meeting sept-14) The current tube diameter seems not optimum… -“If tube diameter can’t be reduced because of welding concerns…” -“Other possibilities: put 2 (or more) petals in series and use same diameter tube as SS staves - double the flow can lift you out of the Stratified-Wavy flow regime…” It would be good also to understand… …how does affect to these simulations; the tube diameter and length for the service tray inlet pipes, capillaries and outlet pipes?…

3 David Santoyo Petal meeting: 24 October 2014 How does affect services to petals and vice versa? If for example, petals are cooled down in series, inlet and outlet pipes in service trays are reduced to half. This fact leads to two options: -x16 service trays serving 14 petals -Reduces service tray complexity and size comparing to previous designs… -Service trays close to horizontals could be rotated loosing symmetry… -Petals are inserted in angle with respect the disk plane… -Petals are not allowed having one EoP on each side… (…not space for petal insertion…) -x8 service trays serving 28 petals -Increases service tray complexity and size comparing to previous designs… -Allows not having services trays on the horizontal line… -Although the size of service tray increases as the number is reduced the space available for petal insertion increases. Petals are inserted in parallel to disks… -Petals could have one EoP on each side

4 David Santoyo Petal meeting: 24 October 2014 Service tray x8 Each x8 version service tray serves 28 petals increasing size and complexity respect the version x16 Cables preferred to be below tubes for reparability

5 David Santoyo Petal meeting: 24 October 2014 Service tray x16 Cables preferred to be below tubes for reparability Each x8 version service tray serves 14 petals

6 David Santoyo Petal meeting: 24 October 2014 Service tray x8 x8 service tray distribution This solution avoids having services on the horizontal (along the rails)

7 David Santoyo Petal meeting: 24 October 2014 Service tray x8 Space available to insert petals increases Petals are inserted parallel to disk plane

8 David Santoyo Petal meeting: 24 October 2014 How does the x8 version for service tray work? Petals connected in series on both sides of the service tray By removing every second service module, the space for petal insertion is increased

9 David Santoyo Petal meeting: 24 October 2014 Service tray x16 Rotation to avoid having services behind BH supports and routing funny pipe shapes Looses symmetry

10 David Santoyo Petal meeting: 24 October 2014 Pipe routing close to rails (x16 version) Problem routing pipes to petals close to rails All petals have same flavour All service trays have same flavour 16 in total

11 David Santoyo Petal meeting: 24 October 2014 Pipe routing close to rails (x16 version) Possible solution to route pipes to petals close to rails All petals have same flavour 12 service trays (single) + 2 service trays (double)

12 David Santoyo Petal meeting: 24 October 2014 Service tray x16 Space available to insert petals decreases Petals are inserted in angle with respect to disk plane

13 David Santoyo Petal meeting: 24 October 2014 Service tray x16 If petals must be inserted in angle the local supports should be adapted for that constrain

14 David Santoyo Petal meeting: 24 October 2014 FEA global structure: adding Si modules -Si wafers -0.3 mm g/cc -7 GPa -Thermal glue -0.2 mm g/cc GPa It’s been added the Silicone modules to the petals to check out how much they affect to the EC structure behaviour Petal local supports being studied

15 David Santoyo Petal meeting: 24 October 2014 EC Finite Element Model

16 David Santoyo Petal meeting: 24 October st CASE2nd CASE3rd CASE Max. VM structure2,34MPa4,25MPa5,29MPa7,43MPa5,54MPa8,1MPa Max. VM Petal2,1MPa4,03MPa5,15MPa7,26MPa5,4MPa7,92MPa Max. VM Blade1,92MPa2,62MPa1,98MPa2,05MPa1,65MPa1,37MPa Max. DX STATIC12,9um9,93um14um12,5um13,9um12um Max. DY STATIC19,5um16,5um23,8um22,7um23,1um21,1um Max. DZ STATIC3,17um2,64um4,4um4,08um3,85um5,08um 1st Frecuency Mode22,163Hz22,632Hz21,834Hz22,317Hz21,957Hz22,397Hz Max. DX PSD 3σ7,32um6,75um8,07um7.95um7,95um7,65um Max. DY PSD 3σ5,52um5,04um5,85um5.76um5,76um5,58um Max. DZ PSD 3σ9,45um8,43um9,75um8.58um9,78um8,55um How does affect Si wafers for EC structure analysis? PSD analysis

17 David Santoyo Petal meeting: 24 October 2014 Conclusions Services affect to petal design:  Insertion and assembly procedure  Local supports and constraints  Petal layout and EoPs Services affect to EC structure:  Thermal and humidity interfaces  Interaction with BH and supports  Structure stability It would be important to focus and also take some decisions as a group on the cooling system and services due to its implication in the overall design

18 David Santoyo Petal meeting: 24 October 2014 Backup

19 David Santoyo Petal meeting: 24 October 2014 FEM ENDCAP

20 David Santoyo Petal meeting: 24 October 2014 FEM ENDCAP

21 David Santoyo Petal meeting: 24 October 2014 FEM ENDCAP

22 David Santoyo Petal meeting: 24 October 2014 FEM ENDCAP