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Injection, Linac, Extraction, & Correctors Preliminary Design and Safety Review

12GeV Upgrade - Beam Transport. Injection, Linac, Extraction, & Correctors Preliminary Design and Safety Review. LINACs Michael Bevins May 17, 2007. Outline. Introduction & Scope Requirements & Specifications New/Modified Linac Elements/Girder Count Beam Transport Layouts

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Injection, Linac, Extraction, & Correctors Preliminary Design and Safety Review

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

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

  3. Introduction & Scope • The12GeV upgrade requires an additional ten cryomodules • Five in the north linac and five in the south • NEW modules are longer than the original CEBAF modules • Result: Warm region girders downstream of the new modules must be replaced with a new short girder • Like downstream of SL21 • 12GeV field strength requirements force us to replace two QB quads at the start of the linac with QCs • Songsheet level machine layouts, QB to QC mod, and the short warm region girder will be presented along with cost estimates • Only modified sections of the LINACs will be included in this presentation

  4. Requirements & Specifications • Alignment specs • Quads positioned to +/-0.5mm in x & y, +/- 1.0mm in z • Vacuum specs • Pre linac: (at MQB1L00 & 01) • Beam line partial pressure of hydrogen <10-6 torr • Total average pressure of all other constituents less than 5x10-7 torr • Warm region girders between cryomodules • UHV • 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 LinacElements/Girder Count • Elements in red are part of I&C WBS

  6. North Linac South Linac Beam Transport Layouts – N&S Linac • North Linac 1st Section • QB to QC change at MQB1L00 & 01 • N&S Linac Sections 3 & 4 • Add new modules in zones 22 through 25 • Replace warm region girders with new short girder

  7. Beam Transport Layouts – QB to QC change • MQB1L00 & MQB1L01 girder modifications • Replace QB quads with higher strength QCs • Shift MQB1L00 stand 4 inches upbeam to improve girder stability • Shift MQB1L01 upbeam 7.6cm from 12GeV dimad position View looking upbeam to MQB1L00 & 01 girders MQB1L00 MQB1L01

  8. Beam Transport Layouts – N&S Linac Layout of new modules & girders in linac DP station moved to end of linac Current Configuration (Zones 19 – 22) 12GeV Configuration (Zones 19 – 22) New module Replace module baseplates Current Configuration (Zones 23 – 26) 12GeV Configuration (Zones 23 – 26) Five New warm girders Four New modules

  9. Beam Transport Layouts – Warm Region Girders • Warm girder design reviewed in Oct 2004 • Prototyped and installed at SL21 • Designed to accommodate multiple combinations of cryomodule configurations • Quad, BPM, and alignment cartridges will be reused on new short girders H&V nested Air Core correctors over BPM Viewer & pump drop cross Quad New stand Existing baseplate New short warm region girder Old warm region girder

  10. 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

  11. Cost Estimates – LINAC WBS Rollup WBS Elements I have covered today

  12. Cost Estimates - Highlighted WBS Girder & Stand Procurements * Warm girder qty includes one spare * Warm girder cost reviewed as part of Quad review on May 3rd 2007

  13. Risk Assessment • Technical - Low • Girders & Supports – very similar designs exist and are already proven • Warm region girder prototyped and installed at SL21 • Alignment - same as existing machine • Procurement Schedule - Low • No long-lead items identified • Cost – Low • Linac warm region girder recently prototyped • Good cost estimates for machined parts • Vendor & Jlab shop budgetary estimates

  14. Summary • Preliminary LINAC beam transport layouts, cost and installation estimates to support CEBAF at 12GeV 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

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