1. December 13, 2006 Blanket and Shield Design Considerations for Magnetic Intervention G. Sviatoslavsky, I.N. Sviatoslavsky, M. Sawan (UW), A.R. Raffray (UCSD),

2. December 13, 2006Fusion Technology Institute2 Outline Chamber Layout Shield and Vacuum Vessel (VV) Design Blanket Design Flibe Blanket Concept

3. December 13, 2006Fusion Technology Institute3 Chamber General Layout Vacuum Vessel & Shield Support structure for VV and magnets Bio-shield Beam Ducts magnets

4. December 13, 2006Fusion Technology Institute4 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

5. December 13, 2006Fusion Technology Institute5 Shield/VV Design Overview 50 cm thick Water cooled 75% steel and 25% water Maintenance access via removable modules at each pole Chamber access minimizes impact on plant systems (i.e., magnets & beam ducts) Minimizes remote handling requirements of plant systems (i.e., those outside Shield) Outer 20 cm is re-weldable

6. December 13, 2006Fusion Technology Institute6 Shield and VV Design Details (beam lines not shown for clarity) Magnet support integrated into shield & VV support structure

7. December 13, 2006Fusion Technology Institute7 Shield and VV Design Details (beam lines and support structure not shown) Support I-beams Removable dump and blanket modules 4.3m R x 6.65m Z Magnets with supports Shield (50 cm thick) 6.9m R x 3.5m Z

8. December 13, 2006Fusion Technology Institute8 Nested polar modules allow VV access without disturbing beam ducts or magnets VV Module housing Polar Blanket VV Module Housing Polar Cusp Armored Dump

9. December 13, 2006Fusion Technology Institute9 Blanket Design Overview PbLi or Flibe Coolant Silicon Carbide Blanket structure Maximum FW temperature of 1000°C Maximum allowable PbLi/SiC Temp. 1000°C Concentric channel approach similar to earlier HAPL blanket designs Self-draining Modular design facilitates remote maintenance

10. December 13, 2006Fusion Technology Institute10 Curved Sub-Module Design Required for Strength Reasons Cross- Sections A A B B C C A-A B-B C-C Concentric variable section channels SiC cooled by high velocity flow in gap Low velocity return flow in center channel

11. December 13, 2006Fusion Technology Institute11 Alternating Blanket Modules have differing end sub-module profiles

12. December 13, 2006Fusion Technology Institute12 Alternating Blanket Modules have differing end sub-module profiles Simplifies Installation Maintains pressure balance between modules

13. December 13, 2006Fusion Technology Institute13 Blanket Maintenance Scheme Self-contained remote handling system attaches vessel at pole

14. December 13, 2006Fusion Technology Institute14 Blanket Maintenance Scheme

15. December 13, 2006Fusion Technology Institute15 Blanket Maintenance Scheme

16. December 13, 2006Fusion Technology Institute16 Blanket Maintenance Scheme

17. December 13, 2006Fusion Technology Institute17 Requiring Further Consideration Coolant plumbing connection/disconnection –Modules include integrated manifold with a single supply and return line –Mechanical connection inside VV –Or cut/re-weld lines inside or outside VV Module attachment/removal –Modules have integrated frame with VV connection mechanisms capable of remote engagement and disengagement

18. December 13, 2006Fusion Technology Institute18 Sub-module for Flibe blanket concept 10 mm thick Be insert Blanket consists of 10% SiC 90% Flibe

19. December 13, 2006Fusion Technology Institute19 Flibe Sub-module Assembly 1. Be inserted at wide end of sub-module Shape of Be inserts allows fit between channel walls 2. Be insert secured to inner channel wall once in place

20. December 13, 2006Fusion Technology Institute20 Conclusions General magnet intervention chamber design concept Chamber maintenance has little/no impact on magnets or lasers VV design minimizes remote handling requirements of plant systems (i.e., magnets and other components outside the shield) Blanket module profile redesigned to facilitate installation/removal Remote handling concept for blanket maintenance Be incorporated using multiple shaped inserts