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WBS 5.0 LCLS Strategic Projects Division

Explore the technological advancements and goals for future X-ray source development for LCLS project, focusing on tunability, coherence, and peak powers. Learn about ongoing R&D efforts towards variable-gap undulators and injector test facility improvements.

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WBS 5.0 LCLS Strategic Projects Division

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  1. WBS 5.0LCLS Strategic Projects Division John N. Galayda 18 February 2009 FY09 Linac Ops Review Page 1

  2. FY09 Linac Ops Review Page 2

  3. SPD Mission • Projects: On Time, On Budget, On Spec • LCLS Construction ($420M, 2002-2010) • LUSI Construction ($ 60M, 2006-2012) • PULSE Construction ($ 11M, 2008-2011) • SLI Construction ($81M-$97.4M, 2009-2014) • Deliver the planning and implementation of next generation upgrades and major modifications of LCLS WBS 5.3 FY09 Linac Ops Review Page 3

  4. WBS Description • 5.1 SPD Management • 5.1.1 SPD Mgmt • 5.1.2 SPD Admin • 5.2 Construction Projects • 5.3 Future Projects FY09 Linac Ops Review Page 4

  5. WBS 5.3 WBS 5.3 SPD Activities, Budget FY09 Linac Ops Review Page 5

  6. WBS 5.3 Future Projects • 5.3.1 LCLS Undulator 1 • 5.3.3 Injector Test Facility • 5.3.4 LCLS Undulator 2 • 5.3.5 LCLS Undulator 3 • 5.3.6 LCLS Hutch 6 Instrument FY09 Linac Ops Review Page 6

  7. WBS 5.3 Future Projects • Science Drivershttp://www-ssrl.slac.stanford.edu/aboutssrl/documents/future_xrays_09.pdf • X-Ray Time Structure—Complete Control of Longitudinal Phase Space • Full Transverse Coherence • Quasi-CW (up to 1 GHz) sources with average flux and/or brightness substantially beyond existing sources in the hard and/or soft x-ray range. • Short-pulse sourceswith high repetition rates (up to 1 MHz) providing average flux and/or brightness substantially beyond existing sources in thehard and/or soft x-ray range. • Soft x-ray tunability (throughout the transition-metal L-edges) and polarization control and modulation. • Hard x-ray tunability and energy range extending to 100 keV. FY09 Linac Ops Review Page 7

  8. 5.3.1 LCLS Undulator 1 • Goal: Determine feasibility of variable gap • Extend operating wavelength of LCLS to 1.0 or 0.8 Angstrom @ 13.6 GeV • May require improvements in gun performance (under study as part of LCLS commissioning) FY09 Linac Ops Review Page 8

  9. LCLS Project goals chosen to control technical risks related to gun performance 0.8 – 8.0 keV Fixed gap device Control technical risks 5.3.1 LCLS Undulator 1 FY09 Linac Ops Review Page 9

  10. 5.3.1 LCLS Undulator 1 • Technical progress toward variable gap devices at Spring8 and DESY Spring-8 DESY FY09 Linac Ops Review Page 10

  11. 5.3.1 LCLS Undulator 1 • 2009 • June: production of a technical report surveying status of R&D for variable-gap FEL undulators at DESY, SPring-8, ANL and LBNL • September: production of a technical report proposing a conceptual design for a prototype variable gap LCLS undulator, making maximum use of existing LCLS undulator system hardware. this report will include a proposal for prototype construction and testing in FY2010. FY09 Linac Ops Review Page 11

  12. 5.3.3 Injector Test Facility • LCLS performance can be improved and expanded if gun performance is improved • Use of the LCLS Injector for gun R&D poses too great a risk to operation • Stand-alone test facility is essential • Also sets the stage for expansion FY09 Linac Ops Review Page 12

  13. 5.3.3 Injector Test Facility • Similar facilities supporting XFEL, SCSS SCSS Test Accelerator PITZ Photoinjector Test Facility SPring-8 Harima, Japan DESY, Zeuthen, Germany FY09 Linac Ops Review Page 13

  14. 5.3.3 Injector Test Facility • SSRL Gun Test Facility laid the foundation for the LCLS Project • Top-up operation of SPEAR-3 makes it impractical to continue gun development there FY09 Linac Ops Review Page 14

  15. 5.3.3 Injector Test Facility • 2009 • April: LCLS Physics Requirements Document for an Injector Test Facility • June: Production of an Engineering Specifications Document for the Injector Test Facility; • June: a written report recommending site selection • September: a detailed cost estimate for the injector test facility based on actual LCLS costs and site-specific considerations. FY09 Linac Ops Review Page 15

  16. 5.3.4 LCLS Undulator 2 • 280-2,000 eV FEL using Endsta. A • Short (~1 fs) pulse capability • High peak brightness • Seeding/temporal control • Possible hard XR spontaneous afterburner • Simultaneous Operation with Undulator 1 • >2X increase in productivity of LCLS • Assuming “hard” x-ray beam can be split/shared FY09 Linac Ops Review Page 16

  17. Very high peak powers possible, enabling more photons for ultrashort pulses Will design-in provision for seeding Seed laser is subject of LDRD ESA 250 MeV 4.3 GeV 13.6 GeV 1.5-5 nm 1.5-15 Å pulsed dipoles 5.3.4 LCLS Undulator 2 Saturation Length, m 1.8 x 1012 photons/fs Peak Power, GW 4.5 x 1011 photons/fs FY09 Linac Ops Review Page 17

  18. 20-pC Bunch at 4.3 GeV, 15 Angstrom Single Spike w/o seeding z = 25 m (power profile at z = 25 m varies from shot to shot due to noisy startup) Y. Ding 15 Å, z = 25 m, 2.41011 photons, Ipk = 2.6 kA, ge 0.4 µm 1.2 fs LCLS FEL simulation at 15 Å based on measured injector beam and Elegant tracking,with CSR, at 20 pC. FY09 Linac Ops Review Page 18

  19. 5.3.4 LCLS Undulator 2 • 2009 • June: Technical report surveying the energy dependence of x-ray beam properties for a FEL in End Station A, including temporal coherence control and overall pulse duration • September: Technical report describing target performance capabilities and cost estimate for a complete facility. FY09 Linac Ops Review Page 19

  20. 5.3.5 LCLS Undulator 3 • Plan for 2nd undulator in the tunnel • 30 keV? • Soft/Hard XR pump/probe? • IR/XR pump/probe • Compatible with simultaneous operation of other LCLS sources FY09 Linac Ops Review Page 20

  21. XR Optics & Test Beam Undulator 2 XR Instruments Undulator 1 Undulator 3 • Undulator 2 construction while LCLS operates • Concurrent operation with Undulator 1 • Compatible with FACET, test beams in ESA • Undulator 1 & 3 • soft/hard pump/probe in Near Expt Hall • extension of spectrum to 24+ keV LCLS Undulators 1,2 & 3 FY09 Linac Ops Review Page 21

  22. 5.3.5 LCLS Undulator 3 • 2009: • August: a technical report describing alternative configurations of the SLAC accelerator complex for a 24 keV FEL and for a "2-color" beamline delivering pulses of soft and hard x-rays to a single sample in one of the LCLS hutches in the near- or far-halls • October: a rough cost estimate for creating this capability at SLAC FY09 Linac Ops Review Page 22

  23. 5.3.6 Hutch 6 Instrument • In anticipation of funding for an instrument supporting study of matter in extreme environments (ME2) • Overall budget being developed • Contributed hardware • Cash • Installation/integration FY09 Linac Ops Review Page 23

  24. 5.3.6 Hutch 6 Instrument • 2009 • September: Completion of a scoping study report for a Hutch 6 instrument. FY09 Linac Ops Review Page 24

  25. Special Needs • 2009 scoping studies, no prototyping • No additional space requirements • 2010 • setup space for U1 prototyping • 2011-2012 • other needs contingent on results • Line-item funding required if R&D is successful FY09 Linac Ops Review Page 25

  26. WBS 5.STRATEGIC PROJECTS FY09 Linac Ops Review Page 26

  27. WBS 5.STRATEGIC PROJECTS FY09 Linac Ops Review Page 27

  28. WBS 5.STRATEGIC PROJECTS FY09 Linac Ops Review Page 28

  29. WBS 5 Strategic Projects FY09 Linac Ops Review Page 29

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