1. RHIC 56 MHz HOM Damper Fundamental Damper Fundamental Power Coupler Pick-ups S. Bellavia January 19 th, 2010

2. Higher Order Mode (HOM) Damper

4. HOM Thermal-Electric Performance Solid Model Assembly in Pro-E, Finite Element Model built in ANSYS 13.0

5. HOM Thermal-Electric Performance (cont.) Boundary Conditions: Surface RF Currents Dielectric (Joule) Heating of Sapphire Heat Leak from Ambient

6. HOM Thermal-Electric Performance (cont.)

7. Dielectric Heating of HOM Sapphire Break

8. Dielectric Heating of Sapphire Break (cont.)

9. HOM Thermal Performance (cont.) Internal Components

10. HOM Thermal Performance (cont.) Assembly with Heat-Stationed Cable 50K Heat Station From Heat Shield

11. HOM Cable Joule Heating vs. Thermal Conductivity OFHC Copper vs. 304 Stainless Steel

12. Cable Joule Heating Due to RF Current

13. Coaxial Cable Choices

14. Model for Calculations

15. FEA Model(s) SS Conductors, Heat Station with Effect of Contact Resistance These regions made 100X more thermally resistive than PTFE to simulate contact resistance

16. FEA Results 50K to Outer Shield For 250 SS Cable - FEA performed on many types and sizes

17. FEA Results Summary

18. HOM Cable-Connector Assembly

19. HOM Cable-Connector (cont.)

20. HOM Hex Seal 10 x 5/16-24 SS Bolts, Torqued to 113.1 in-lbs results in 1809.6 lbf (80% of yield) Bolt Circle =  x 3.700 = 11.62 inches Linear Sealing Load = 10 x 1809.6 / 11.62 = 1557 lb f /inch

21. HOM Final Design / Fabrication / Procurement Full set of drawings being checked SOW and Specification to be released this week, followed by Purchase order / RFQ Parallel Effort to build “in-house” (BNL will manage piece-part fabrication) - Quotation for brazing Sapphire break received - Quotation for Custom Sapphire tubes received - Awaiting Quotation for Stock Size Sapphire Tube

22. HOM Design / Fabrication

23. HOM Design / Fabrication (cont.)

24. HOM Filter Assembly

25. HOM Procurement

26. HOM Procurement (cont.)

27. Sapphire for Filter Components

28. HOM Schedule Jan 21 – Release of Drawings (numerical rev’s for quotation) Jan 21 – Signature / release of SOW and Specifications Jan 21 – Purchase order for building entire HOM assembly –Phase 1 – Prototype / First Article (20 +2 weeks – June ‘11) –Phase 2 – 6 follow-on HOM’s (36 +2 weeks – Oct ‘11) Feb 7 – P.O. for brazing of Sapphire-Niobium break supply vendor with sapphire tubes and machined niobium parts (12 weeks – April ‘11 ) purchase and receive brazed assemblies (16 weeks – May ‘11) arrange machining of niobium components (12 weeks – April ’11) send out machined parts and brazed assemblies for pre-cleaning, welding and final cleaning, (most likely to AES). (32 weeks – Sep ’11) Receive Final HOM’s (36 weeks – Oct ’11) Feb 21 – P.O. for Brazing of Filter Assembly

29. HOM Costs Sapphire tubes $ 15K Niobium (raw material) $ 10K Niobium machining$ 50K Brazed Break$ 20K Brazed Filter Assy$ 10K Welded Assemblies$200K Cleaned Assemblies$ 50K Total$355K First Article$150K 6 Final HOM’s $425K Total$575K Done “In-house” by BNLDone by Outside Vendor

30. Fundamental Damper

31. Fundamental Damper (cont.)

33. Fundamental Damper Motion System

34. Fundamental Damper Motion System Costs Motion System

35. Feb ‘11 – Thermal / Structural Analysis May ’11 – Detailed Design / Drawings Fundamental Damper Schedule / Costs Total Cost = $125K = 400 shop hours

36. Fundamental Power Coupler FPC

37. Fundamental Power Coupler (cont.)

39. Fundamental Power Coupler Connector 7/16 DINType N

40. Fundamental Power Coupler Weldable, UHV Compatible Connector / Window

45. Total Cost = $95,600 Fundamental Power Coupler Schedule / Cost Mar ‘11 – Thermal / Structural Analysis June ’11 – Detailed Design / Drawings

46. Total Cost = $2,100 Pick-Ups Schedule / Cost