Bright Lights on the Horizon Future Perspectives for Nuclear Resonant Scattering of Synchrotron Radiation Ralf Röhlsberger HASYLAB @ DESY, Hamburg, Germany •The Evolution of Brilliance •Upgrade of Existing Sources •Construction of New Sources: •PETRA III and the XFEL
Bright Lights on the Horizon. Ralf Röhlsberger HASYLAB @ DESY, Hamburg, Germany. Future Perspectives for Nuclear Resonant Scattering of Synchrotron Radiation. The Evolution of Brilliance Upgrade of Existing Sources Construction of New Sources: PETRA III and the XFEL. - PowerPoint PPT Presentation
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Bright Lights on the HorizonFuture Perspectives for
• Original proposal (March 2001) part of the TESLA project.
• In October 2002 an standalone version was proposed
• Germany agreed to propose a site and to cover 50% of the building cost.
• Technical parameters are currently reconsidered.
~ 2000m ~ 1200m
3 FEL and 2 beamlines for spontaneous synchrotron radiation with 10 independent experimental stations
The European XFEL at the DESY site
Towards the European XFELFeb 2003 BMBF indicates ‚green light‘ for European XFELOct 2003 European Strategy Forum for Research
Infrastructures evaluates Technical challengesDec 2003 XFEL enters EU Quickstart programme
Jan 2004 Formation of an European steering group • Working groups on technological issues• Working groups on administrative issues• Update of scientific case
End 2004 Start plan approval procedure at DESYWorkshops to define user/science requirements
Early 2005 European agreement on XFEL projectStart of project
2006 Start of construction2012 Start of commissioning
Diffusion, melting,ablation
Phonon-phonon scattering
Valence state excitations Te-h >> TL
no
n-t
he
rma
lth
erm
al
Equilibration (Te-h ~ TL)
Carrier-phonon scatteringTe-h , TL
10-15 s
10-12 s
10-9 s
10-6 s
Ultrafast Processes
NRS Experiments at the XFEL
Pump-probe investigations of dynamical phenomena
Excitations in artificial spin chains, solitons
Fast magnetic switching
Magnon spectroscopy,
Single – particle imaging
Use of complementary techniquesNeutron scattering, Magnetic x-ray scattering, Magneto-optics, Inelastic x-ray scattering, …