1. January 30, 2007 Exterior Magnets Concept Blanket and Vacuum Vessel Chamber Integration and Maintenance G. Sviatoslavsky, M. Sawan (UW), A.R. Raffray (UCSD),

2. January 30, 2007Fusion Technology Institute2 Outline Chamber Layout Blanket Maintenance Dump Maintenance Design Assessment in Terms of Givens and Druthers

3. January 30, 2007Fusion Technology Institute3 Chamber Cut-away Magnets Pole Blanket module Mid Blanket modules (16 upper & 16 lower) Ring Cusp Armored Dump Polar Cusp Armored Dump Module Shield/VV

4. January 30, 2007Fusion Technology Institute4 Nested polar modules allow VV access without disturbing beam ducts or magnets VV Module housing Polar Blanket External manifold (not shown) allows hands-on pipe connection & disconnection VV Module Housing Polar Cusp Armored Dump

5. January 30, 2007Fusion Technology Institute5 Blanket Maintenance Scheme Self-contained remote handling system attaches vessel at pole

6. January 30, 2007Fusion Technology Institute6 Blanket Maintenance Scheme

7. January 30, 2007Fusion Technology Institute7 Blanket Maintenance Scheme

8. January 30, 2007Fusion Technology Institute8 Blanket Maintenance Scheme

9. January 30, 2007Fusion Technology Institute9 Blanket Module with Frame and Coolant Manifold Module Frame Coolant inlet and outlet manifolds Chamber attachment points Frame is one option Provides module/vessel clearance required for manifold Frame requires cooling Another option: mount attachment points directly onto sub-modules Another manifold option is to have concentric inlet/outlet piping

10. January 30, 2007Fusion Technology Institute10 Tee Nut Remote Fasteners Nut Bar mechanism integrated into chamber and manipulated from outside of chamber Fixed mounting receptacles mounted on module frame Captive nut / bolt fasteners Utilized in TPX divertor module mounting Allows some lateral movement to accommodate thermal expansion Fastener tightened outside the chamber due to space constraints at module/chamber interface

11. January 30, 2007Fusion Technology Institute11 Attachment Point Detail Fixed mounting receptacle for clamping with nut bar 1.Module is aligned to engage nut bar through “keyed” opening of receptacle 2.Rotation of nut bar is stopped at 90 0 3.Additional rotation tightens nut bar against receptacle keyed wall

12. January 30, 2007Fusion Technology Institute12 Cut-Away View of Module/Chamber Interface Manifold inlet & outlet connection Nut bar tightened from outside of chamber Blanket Module Shield wall Module frame Fixed mounting receptacle Chamber Support I-beam

13. January 30, 2007Fusion Technology Institute13 Tee Bar Fastener detail Fixed mounting receptacle Module Shield Tee bar fastener tightened from outside of chamber Module frame Length of linkage through shield provides “flexibility” to accommodate thermal expansion

14. January 30, 2007Fusion Technology Institute14 Manifold Connection Detail Option 1: External welding possible with proper installation alignment Option 2: ~ 11” inlet & outlet pipes allows internal welding Coolant penetrations through shield) (two shown but concentric option requires only one) Shield

15. January 30, 2007Fusion Technology Institute15 Maintenance of Ring Cusp Dump Removable “Ring Caps” at equator Possibly replaceable ring cap modules with integrated dumps plates

16. January 30, 2007Fusion Technology Institute16 Givens & Druthers – All Noncompliance Does not allow “Straight-up” blanket removal Field coil radii: 4.1m & 6.9m vs. 3.4m & 6.1m (radius measured to center of coil cross-section) Blanket offset from shield by only ~35cm

17. January 30, 2007Fusion Technology Institute17 Givens & Druthers – Highlighted Compliance Blanket access does not require re-welding beam ports Blanket Access does not require disconnecting (or moving) beam ports Minimizes mass lifted for chamber access Minimizes height of components to be lifted Minimizes evacuated volume

18. January 30, 2007Fusion Technology Institute18 Additional Advantages Blanket access does not require disturbing magnets Magnets accessible for hands-on maintenance