Nick Walker (DESY) EU GDE Meeting Oxford

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Presentation transcript:

Nick Walker (DESY) EU GDE Meeting Oxford 25.10.2005 European XFEL Nick Walker (DESY) EU GDE Meeting Oxford 25.10.2005

EURO-XFEL 21.09.2005

ILC Projected Time Line 2005 2006 2007 2008 2015… 2010 2012… GDE process Baseline Config. Document (BCD) Ref. Design Report (RDR) + $€¥ TDR construction synergy EU FP7 ?? commissioning physics EURO XFEL preparation construction operation 21.09.2005

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 21.09.2005

TESLA 9-Cell Cavity R&D Established after 10 years 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 21.09.2005

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 programme also part of XFEL R&D 21.09.2005

Cavity R&D R&D within Europe funded by XFEL project 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 Mentioned also single-crystal 21.09.2005

Cavity Package Auxiliaries INFN blade tuner SACLAY tuner (type III) TTF TYPE-III HP Coupler industrialisation – cost – reliability 21.09.2005

Fabrication of TTF-3 Couplers number of couplers machining & welding ceramic TiN coating copper plating final e-beam welding 10 prototypes Desy FNAL Industry 12 first series 40 second series 62 TTF-3 couplers have been fabricated to date 52 in industry 21.09.2005

(XFEL) Coupler Industrialisation Ongoing study at Orsay, France TTF-3 (baseline) XFEL coupler 4 diagnostics removed Motorized tuning 21.09.2005

(XFEL) Coupler Industrialisation Ongoing study at Orsay, France XFEL coupler Reduced part count Design simplification Tolerance studies Assembly processes Mounting sequences 21.09.2005

LLRF 21.09.2005

Lorentz Force Detuning Compensation 21.09.2005

LLRF 21.09.2005

Cryomodule (CM) Variants Main European emphasis is on - industrialisation - reliability - cost optimisation TTF CM already 3rd generation 21.09.2005

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 Baseline ILC recommended baseline FNAL Modulator at TTF 21.09.2005

Baseline Klystrons Specification: 10MW MBK 1.5ms pulse 65% efficiency Thales CPI Toshiba Baseline ILC recommended baseline 21.09.2005

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 21.09.2005