12 Ge V Upgrade Beam Transport Injection Linac
12 Ge. V Upgrade - Beam Transport Injection, Linac, Extraction, & Correctors Preliminary Design and Safety Review Extraction Michael Bevins May 17, 2007
Outline • • Introduction & Scope Requirements & Specifications New/Modified Extraction Elements/Girder Count Beam Transport Layouts Safety Considerations Cost Estimates Risk Assessment Summary
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 12 Ge. V operations • Songsheet level machine layouts will be presented along with cost estimates Extraction Region
Requirements & Specifications • Alignment specs – Quads & dipoles positioned to +/-0. 5 mm in x & y, +/- 1. 0 mm in z • Vacuum specs – Beam line partial pressure of hydrogen <10 -6 torr – Total average pressure of all other constituents less than 5 x 10 -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
New/Modified Extraction Elements/Girder Count • Preliminary - pending CASA review and more detailed vacuum study • Elements in red are part of I&C WBS
Beam Transport Layout - Extraction
Extraction Layouts – RF Separators Current Configuration 12 Ge. V Configuration New double quad girder Relocated New Two new pedestal stands Existing supports New quad girder
Extraction Layouts – RF Separators
Extraction Layouts – Septa Magnet Stacks Current Configuration 12 Ge. V Configuration New quad girder Two YBs Relocated One relocated and one new support stand New Two new pedestal stands Two new support stands Three YRs YA Septa Stacks YB/YR Septa Stack
Extraction Layouts – Septa Magnet Stacks Existing YA Septa Stack Existing YB Septa Stack
Extraction Layouts – Dipole Magnet Stacks Current Configuration 12 Ge. V Configuration New Two new support stands Three BPs New BP Dipole Stack
Extraction Layouts – Dipole Magnet Stacks Current Configuration 12 Ge. V Configuration New
Extraction Layouts – Dipole Magnet Stacks 12 Ge. V Configuration Two existing BQs New support stand Three new BPs New BP BP Dipole Stack Two new pedestal supports for 5 th pass BP New pedestal for 5 th pass BP downbeam support BQ/BP Dipole Stack
Extraction Layouts – Dipole Magnet Stacks BP Stack Existing BP Dipole Stack BQ Stack Existing BQ Dipole Stack
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
Cost Estimates –Extraction WBS Rollup * * Septa and dipole vacuum chambers WBS Elements I have covered today
Cost Estimates - Highlighted WBS Stands - Procurements
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
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, Rad. Con, 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
- Slides: 19