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ANL-FNAL Collaboration Meeting: Superconducting RF

ANL-FNAL Collaboration Meeting: Superconducting RF. May 18, 2007. ANL: Mike Kelly, Scott Gerbick, Bill Boettinger (NE) FNAL Collaborators: Kerry Ewald, Cristian Boffo, Dan Olis, Allan Rowe Speaker: Mike Kelly. Projects in Superconducting RF (ANL perspective). SRF Accelerator Projects. ILC.

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ANL-FNAL Collaboration Meeting: Superconducting RF

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  1. ANL-FNAL Collaboration Meeting:Superconducting RF May 18, 2007 ANL: Mike Kelly, Scott Gerbick, Bill Boettinger (NE) FNAL Collaborators: Kerry Ewald, Cristian Boffo, Dan Olis, Allan Rowe Speaker: Mike Kelly

  2. Projects in Superconducting RF (ANL perspective) SRF Accelerator Projects ILC ERL AEBL ATLAS HINS Manpower ANL SRF Group M. Kelly, J. Fuerst, S.Gerbick Z. Conway (Grad. Student) K. Shepard (1 day/week) Coordination Nb procurement, QA Mechanical & EM design Chemistry Clean processing & assembly Testing AES ANL Shops Meyer Tool Niobium tooling and forming Brazing Stainless machining Sciaky Collaborators K. Ewald, A. Rowe, D. Olis Electron beam welding ANL SRF Facilities 203 Cold Test Facility 203 Surface Prep Lab SCSPF

  3. ANL interest is to develop the complete capability for building, processing, testing, operating elliptical cavities SRF at ANL Effort for ILC FY07

  4. Major Areas of ANL/FNAL SRF Collaboration • Cavity Processing Infrastructure (2002-07) Chemistry/Clean rooms Scrubber Ultra-pure water system High-pressure water pump • Electropolishing System, 12 design meetings since Oct. 06 Cathode/Cathode Loading – FNAL lead Cavity mechanical assembly – ANL lead • High-pressure water rinsing/single cavity clean assembly • “G150” Surface Prep Laboratory at ANL 3.9 GHz Cavity Buffered Chemical Polishing

  5. ILC-Americas Planning:ANL/FNAL to Lead Cavity Processing

  6. Technical Approach: A Horizontal Electropolishing System

  7. Technical Approach: Cathode Loading, Acid Draining, Water Rinsing

  8. Electropolishing Design Review at ANL, Feb. 12 2007 • Reviewers: Hasan Padamsee (Cornell), Kenji Saito (KEK), Tsuyoshi Tajima (LANL), Lutz Lilje (DESY), Axel Matheisen (by phone DESY), Marc Ross (FNAL), John Mammosser (JLAB) • Presenters: Mike Kelly (ANL), Cristian Boffo (FNAL) Charge to the Committee • Does the design meet the ILC specifications? • Will the system be ready for commissioning in July 2007? • Assess the suitability of the design for performing one EP procedure per week in FY08-09. The committee report was very positive; manpower critical path

  9. SCSPF: Superconducting Cavity Surface Processing FacilityLocation: Argonne Building 208 • Facility Cost with manpower $2M • Safety Review Completed in 2006; 700 man-hours and $100K • EP Operations started in 2006 20 m

  10. SCSPF: ANL Portion

  11. Commissioning the SCSPF: Electropolishing Entry into ANL chemistry room after EP Last of 6 QWR for ATLAS Upgrade, May 07

  12. Assembling/Testing Hardware for ILC Cavity Processing Electropolishing system mechanical frame Cavity handling system for chemistry & clean rooms

  13. Status of ANL-FNAL collaboration in SRF • ANL-FNAL have had an effective collaboration on electropolishing • EP Design Specification 100% complete • EP Engineering Design 100% complete • EP Design Review 90% complete • EP System/component procurement 90% complete • EP system assembly 40% complete • We are on track to perform electropolishing for ILC by July 2007 • ANL-FNAL collaborating on high-pressure rinsing for the joint facility; began in April on design/construction (initially de-scoped due to CR in FY07) • Continued effective ANL-FNAL SRF effort require a (more) focused and sustained effort of a (larger) group of technical together with management.

  14. Additional Material: A Cavity Holding Fixture 2.5 cm stainless (titanium) tube Spider Assembly Pin with expanding diameter “quick” pin clamps here using aluminum “seat” clamp

  15. Additional Material: HPR in G150 facility • Supplied with 18 MW-cm deionized water at 20 l/m, up to 3000 PSI • Rinsed and dried in a curtained clean area

  16. Additional Material: Test of End Group Fri. Feb 9, 2007 • Filled with water, rotated shaft on lip seal at 20 rpm, pressurized to 2 PSI • First test looks good; long term operation to be tested

  17. Additional Material • Fluoride specific electrode; untested; requires dilution by ~50X

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