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XFELs overview

Progress at the XFELs in Europe and Japan Hans-H. Braun, PSI 48 th ICFA Advanced Beam Dynamics Workshop on Future Light Sources March 1-5, 2010 SLAC National Accelerator Laboratory. XFELs overview. European XFEL FEL parameters. FLASH. XFEL/SPring-8 Building construction

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XFELs overview

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  1. Progress at the XFELs in Europe and JapanHans-H. Braun, PSI48th ICFA Advanced Beam Dynamics Workshop on Future Light Sources March 1-5, 2010SLAC National Accelerator Laboratory

  2. XFELs overview

  3. European XFEL FEL parameters

  4. FLASH

  5. XFEL/SPring-8 Building construction completed March 2009 Experimental Hall (under construction) Undulator Hall 400 m Accelerator Tunnel Klystron Gallery Machine Assembly Hall

  6. SCSS

  7. SCSS Test Accelerator Performance 2006 First lasing at 49 nm 2007 Full saturation at 60 nm 2008 User operation stat In-vacuumundulator C-bandaccelerator 476 MHz booster S-bandbuncher 238 MHz buncher 500 kV Pulse electron gunCeB6 Thermionic cathodeBeam current 1 Amp. E-beamCharge: 0.3 nCEmittance: 0.7 p.mm.mrad(measured at undulator)Four C-band accelerators1.8 m x 4 Emax = 37 MV/mEnergy = 250 MeVIn-Vacuum UndulatorsPeriod = 15 mm, K=1.3Two 4.5 m long.

  8. FERMI Layout X-band linac tunnel Laser Heater BC1 BC2 L1 L2 L3 L4 PI undulator hall Slide Courtesy of S. Di Mitri FEL1 Transfer Line FEL2 experimental hall Photon Beam Lines PADReS LDM slits FEL1 DIPROI FEL2 I/O mirrors & gas cells EIS

  9. FERMI@ELETTRA Electron beam parameters FERMI@ELETTRA FEL parameters

  10. www.sparx-fel.eu Free Electron Laser ranging from 40 nm a 0.5 nm 4 different Beamlines with dedicated experimental stations Peak Brillance: 1027 sec.mrad².mm.0.1 % BW – 80-200 fs pulses Site : Università di Roma Tor Vergata Costruction of the 500 m tunnel: 2010 - 2014 • Applications: • Time-resolved X-ray techniques • Coherent x-ray imaging • Spectromicroscopy  • Structural studies of biological systems, allowing crystallographic studies on biological macromolecules

  11. www.sparx-fel.eu

  12. 150 MeV S-band linac Velocity Bunching Diagnostic and Matching Undulators u = 2.8 cm Kmax = 2.2 r = 500 nm 12 m S-band Gun Long Solenoids 15 m Seeding THz Source

  13. SwissFEL 704 m Aramis: 1-7 Å hard X-ray SASE FEL, In-vacuum , planar undulators with variable gap. 7-70 Å soft X-ray FEL for SASE & Seeded operation . APPLE II undulators with variable gap and full polarization control. Athos: D’Artagnan: FEL for wavelengths above Athos, seeded with an HHG source. Besides covering the longer wavelength range, the FEL is used as the initial stage of a High Gain Harmonic Generation (HGHG) with Athos as the final radiator.

  14. SwissFEL Injector Linacs Undulator lines 715m soft X_ray hall hard X_ray hall

  15. SwissFEL electron beam parameters

  16. SwissFEL photon beam parameters (Aramis for 1 Å)

  17. SwissFEL 250 MeV Injector Test Facility

  18. Today

  19. Injectors

  20. From PITZ, SSCS and LCLS injector data one could infer: • No matter what you choose as injector, if you work hard enough you get • ε≈ 1 μm qB½ (with qB in nC ) • Open injector R&D issues • how to get the same ε/qB½ for c.w. operation • how to improve one order of magnitude in ε/qB½

  21. Photon energy vs. electron beam power cold linac warm linac

  22. Cost comparison linac technologies or Why doesn’t everybody take s.c. & c.w. Beware! This is not exact science !

  23. Cost vs. gradient for S-band with 45 MW klystron, S-band with 80MW klystron and C-band with 50 MW klystron Advantage of C-band is in real-estate needs and electricity consumption

  24. Talk Matthias Fuchs Thursday 10:00 - 10:30

  25. Many thanks to Reinhard Brinkmann, Jörg Rossbach, Massimo Ferrario, Florian Grϋner, Stephen Milton, Tsumoru Shintake, Richard Walker for providing information and materials

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