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

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 5th 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
Current Configuration
12GeV Configuration
New double quad girder
New quad girder
Relocated
New
Two new pedestal stands
Existing supports

8. Extraction Layouts – RF Separators

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

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

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

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

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

14. Extraction Layouts – Dipole Magnet Stacks
BP Stack
BQ Stack
Existing BP Dipole Stack
Existing BQ Dipole 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*
* Septa and dipole vacuum chambers
WBS Elements I have covered today

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