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European XFEL

European XFEL. Nick Walker (DESY) EU GDE Meeting Oxford 25.10.2005. EURO-XFEL. 2005. 2006. 2007. 2008. 2010. 2015…. 2012…. GDE process. Baseline Config. Document (BCD). Ref. Design Report (RDR) + $€ ¥. TDR. construction. commissioning. physics. preparation. construction.

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European XFEL

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  1. European XFEL Nick Walker (DESY) EU GDE MeetingOxford 25.10.2005

  2. EURO-XFEL

  3. 2005 2006 2007 2008 2010 2015… 2012… GDE process Baseline Config. Document (BCD) Ref. Design Report (RDR) + $€¥ TDR construction commissioning physics preparation construction operation EURO XFEL ILC Projected Time Line synergy EU FP7 ??

  4. 20 GeV SCRF linac • Primary focus: consolidate basic TTF technology • successful tech. transfer to industry • cost reduction through industrialisation • need extensive effort to achieve high reliability !!! • High-Gradient programme continues to be a priority for TESLA Tech. Collaboration • Both as part of the ILC and XFEL projects

  5. TESLA 9-Cell Cavity R&D • Leak check • Frequency Tuning • Damage Layer Removal • Furnace treatments • Final Frequency Tuning • Final Surface Preparation • Final Cleaning • Bake-out 120-130° C • Low-Power Acceptance Test • Tank Welding • Assembly for High-Power Operation • High-Power Testing Established after 10 years R&D Emphasis on QA/QC Reliable transfer to industry

  6. Electropolishing @ DESY Results from DESY & KEK Q0 Eacc MV/m New cavity production (30 cavities) will be put through EP Significant increase in statistics Specification / fine tuning of EP parameters (→ XFEL) → Module 6 (35 MV/m cryomodule) High gradient programmealso part of XFEL R&D

  7. Cavity R&D Fabrication from large grain or single-crystal Nb discs May remove the need for electropolishing ( cost!) JLAB (P. Kneisel) DESY DESY R&D within Europe funded by XFEL project

  8. SACLAY tuner (type III) Cavity Package Auxiliaries INFN blade tuner TTF TYPE-IIIHP Coupler industrialisation – cost – reliability

  9. Fabrication of TTF-3 Couplers 62 TTF-3 couplers have been fabricated to date 52 in industry

  10. (XFEL) Coupler Industrialisation Ongoing study at Orsay, France TTF-3 (baseline) XFEL coupler 4 diagnostics removed Motorized tuning

  11. (XFEL) Coupler Industrialisation Ongoing study at Orsay, France • Reduced part count • Design simplification • Tolerance studies • Assembly processes • Mounting sequences XFEL coupler

  12. LLRF

  13. Lorentz Force Detuning Compensation

  14. LLRF

  15. Cryomodule (CM) Variants Main European emphasis is on- industrialisation - reliability- cost optimisation TTF CM already 3rd generation

  16. Baseline ILC recommended baseline The FNAL Modulator • 3 modulators have been developed, built and delivered to TTF by FNAL since 1994 • They are continuosly in operation under different operation conditions • 7 modulators have now been constructed by European Industry FNAL Modulator at TTF

  17. Baseline ILC recommended baseline Baseline Klystrons Specification: 10MW MBK 1.5ms pulse 65% efficiency CPI Toshiba Thales

  18. Summary • XFEL preparation pushing SCRF R&D linac tech. R&D in Europe • Industrialisation • Cost reduction • Reliability • Much overlap with ILC • XFEL specs. and ILC baseline very similar • High-gradient programme remains part of XFEL programme

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