1. Extraction Michael Bevins May 17, 2007 12GeV Upgrade - Beam Transport Injection, Linac, Extraction, & Correctors Preliminary Design and Safety Review

2. Outline Introduction & Scope Requirements & Specifications New/Modified Extraction Elements/Girder Count Beam Transport Layouts Safety Considerations Cost Estimates Risk Assessment Summary

3. Introduction & Scope The extraction region must be upgraded to support transport of higher energy beam to halls A, B, & C and 5 th pass beam to the new arc 10 to support 12GeV operations Songsheet level machine layouts will be presented along with cost estimates Extraction Region

4. Requirements & Specifications Alignment specs –Quads & dipoles positioned to +/-0.5mm in x & y, +/- 1.0mm in z Vacuum specs –Beam line partial pressure of hydrogen <10-6 torr –Total average pressure of all other constituents less than 5x10-7 torr Fabrication, welding, cleaning & handling, and leak checking specs still apply –22631-S-001 Fabrication of Ultra-High Vacuum Equipment –22632-S-001 Cleaning and Handling of U.H.V. Components –22633-S-001 Welding Specification For U.H.V. Components –22634-S-001 Helium Leak Test For U.H.V. Components –Note an update and modernization of our vacuum specs is underway

5. New/Modified Extraction Elements/Girder Count Preliminary - pending CASA review and more detailed vacuum study Elements in red are part of I&C WBS

6. Beam Transport Layout - Extraction

7. Extraction Layouts – RF Separators 12GeV Configuration Current Configuration Relocated New Two new pedestal stands Existing supports New quad girder New double quad girder

8. Extraction Layouts – RF Separators

9. Extraction Layouts – Septa Magnet Stacks 12GeV Configuration Current Configuration Relocated New Two new pedestal stands YA Septa Stacks YB/YR Septa Stack New quad girder Two YBs Three YRs One relocated and one new support stand Two new support stands

10. Extraction Layouts – Septa Magnet Stacks Existing YA Septa StackExisting YB Septa Stack

11. Extraction Layouts – Dipole Magnet Stacks 12GeV Configuration Current Configuration New Two new support stands New BP Dipole Stack Three BPs

12. Extraction Layouts – Dipole Magnet Stacks 12GeV Configuration Current Configuration New

13. Extraction Layouts – Dipole Magnet Stacks New New support stand BQ/BP Dipole Stack Three new BPs 12GeV Configuration New pedestal for 5 th pass BP downbeam support Two existing BQs BP Dipole Stack New BP Two new pedestal supports for 5 th pass BP

14. Extraction Layouts – Dipole Magnet Stacks Existing BP Dipole Stack Existing BQ Dipole Stack BP StackBQ Stack

15. Safety Considerations Personnel Training –Jlab & sub-contractor Radiation –Designated areas for containment and radiation survey of material that will be removed from the tunnel Material handling –Provide provisions for lifting Electrical Hazards –Package and support electronics, power leads and terminal blocks to control electrical hazards

16. Cost Estimates – Extraction WBS Rollup WBS Elements I have covered today * * Septa and dipole vacuum chambers

17. Cost Estimates - Highlighted WBS Stands - Procurements

18. Risk Assessment Technical - Low –Girders & Supports – very similar designs exist and are already proven –Vacuum - existing designs already proven, detailed vacuum analysis TBD –Alignment - same as existing machine Procurement Schedule - Low –No long-lead items identified Cost – Low –Good cost estimates for machined parts Vendor & Jlab shop budgetary estimates

19. Summary Preliminary extraction beam transport layouts and cost and installation estimates are complete based on present scope We are in a good position to support our DOE External Project Reviews this summer We will continue to work closely with our friends throughout the lab (safety, CASA, installation, vacuum, alignment, RadCon, I&C, magnet measurement, operations, procurement & facilities) as we move forward Detailed design will be completed to support assembly and installation schedules We look forward to comments & recommendations from the committee