Coherent Synchrotron Edge Radiation and Applications at ANKA - PowerPoint PPT Presentation

Forschungszentrum Karlsruhe In der Helmholtz-Gemeinschaft Coherent Synchrotron Edge Radiation and Applications at ANKA Yves-Laurent Mathis*, Anke-Susanne Müller, Biliana Gasharova and David Moss Synchrotron Light Source ANKA Karlsruhe Research Center, Germany *mathis@anka.fzk.de UVSOR Workshop on THz CSR, Sept. 23-25, 2007

Where is ANKA? ) MAXLAB # SRS DIAMOND # BESSY Delta SOLEIL ) # # ANKA LURE ) SLS ELETTRA ) ) ESRF Barcelona # DAFNE

The facility NANO- P-Diff ienl ed ab M M e d i e n a l b FAB- SUL XAS LAB n e b a l e M i d M ed ienla b h t n i b . t f n u g s l a b y r L t f ü u n g a s l L ü Topo IMAGE Wiggler INE 3 S S P Garderobe- rank 2 PSS 2.5 GeV s ch 1 S S P Schuhbarriere Storage Ring Cleanroom 2 T S R - 1 u m - garderob e T Re inra k schra n R S OI 3 RST 3 Scan 3 500 MeV Booster Fluo SCHU LIGA III L a m i n r a 2 A b r e i 1 t LIGA I SCD SCUW S c a n 1 VFML Scan2 Micro- LIGA II Arbeitspl . tron IR 1 Laminar 1 OI 1,2 IR ENT SLIT SCU14 GRATING MPG-MF E X I T S I L T Diagnostic NANO Front-End IR2 PEEM WERA PES NANO-FAB-LAB SXMCD 25.01.05 U. Herberger 0 2 4 6 8 10 m

ANKA-IR beamline layout e - beam MPI-FKF Synchrotron radiation ellipsometer 5 1 , 2 8 *) *) High pressure IR-microscope SUL-IR set-up FT-IR spectrometers

Magnetic profile 1.5 at a dipole of ANKA Magnetic Field [T] 1.0 0.5 Spatial distribution Spatial distribution from the dipole at from the edge at 0.0 3m from the source 3m from the source 1.0m 0.5 0.0 -0.5 -1.0 Position on particle trajectory [m] Photons/s/.1%bw/mm^2 x10 Photons/s/.1%bw/mm^2 x10 40 40 150 2.5 20 20 y [mm] y [mm] 100 0 0 2.0 -20 -20 50 1.5 -40mm -40mm 9 9 0 -40mm -20 0 20 40 -40mm -20 0 20 40 λ = 100 μ m x [mm] x [mm]

Edge radiation at ANKA-IR in the visible at 2.5 GeV in the mid–IR: 700-1400 cm -1 at 2.5 GeV

Coherent Synchrotron Radiation: gain up to 10 4 (Si bolometer)

Coherent “low α “ mode at ANKA • Single user mode - E = 1.3 GeV - initial current intensity ~ 50-70 mA - lifetime ~ 15 hours - effective bunch length < 1 ps - spectral range ~ 5 – 50 cm -1 • 6 blocks of 2 days per year

FTIR ellipsometric assembly C. Bernhard (Fribourg Univ., Switzerland), Alexander Boris (Max Planck Inst., Stuttgart, Germany)

Ellipsometry principle Elliptically polarized light determined by: 1. Relative phase shift, ∆ = δ p – δ s 2. Relative attenuation, tan Ψ = I r p I / I r s I 2.0 Intensity 1.0 0.0 0 90 180 270 360 Analyzer angle (A i ) From : I ( A i )/ I 0 a = 1 + α sin(2 A i ) + β cos(2 A i ) Obtain: ε (ω, α, β, ϕ , P ) = ε 1 (ω) + i ε 2 (ω)

Soft mode spectroscopy: experimental studies of structural phase transitions 14 16 18 20 22 24 For review: J. F. S cott, Rev. Mod.Phys. 46, 83– 128 (1974) 12000 10 K 20 K 8000 30 K ε 2 40 K Sr 4000 0 Ti 50 K 80 K 4000 125 K 200 K ε 1 0 -4000 14 16 18 20 22 24 -1 ) Wave number (cm 1 st ellipsometric measurements using CESR (July 2005) C. Bernhard, A. Boris, Y.-L. Mathis, A.-S. Müller

Far infrared and THz analysis of biological metal sites in proteins and related model Reduced-minus-oxydized FTIR difference spectrum of Cytochrome c in solution C. Berthomieu, R. Hienerwadel, D. Moss, M. Rouziere ANKA annual report 2007

Far infrared and THz analysis of biological metal sites in proteins and related model Red-minus-ox and ox-minus-red FTIR difference spectra of Cytochrome c in solution C. Berthomieu, R. Hienerwadel, D. Moss, M. Rouziere ANKA annual report 2007

Future infrared beamlines NANO- P-Diff ienl ab ed M edie nlab M FAB- IR 3 SUL XAS LAB b M edie nla (projected) M ed ienla b sla byrin th ftu ngs lab . ftung Lü Lü Topo IMAGE Wiggler INE 3 S S P Garderobe- rank PSS 2 2.5 GeV s ch 1 S S P Storage Ring Schuhbarriere Cleanroom 2 T R S 1 u m - - garderob e T Re inra k schra n S R OI 3 RST 3 3 n a S c 500 MeV Booster Fluo SCHU LIGA III L a m n i a 2 r A r b e i t 1 LIGA I SCD S SCUW c a n 1 V Micro- F M Scan2 L LIGA II Arbeitspl . tron IR 1 Laminar 1 OI 1,2 (operational) IR ENT SLIT SCU14 G R A T I N G MPG-MF IR 2 (under E X T I S L I T Diagnostic construction) Front-End IR2 NANO PEEM WERA PES NANO-FAB-LAB SXMCD 25.01.05 U. Herberger 0 2 4 6 8 10 m

Summary Coherent “low α “ mode at ANKA • Single user mode - E = 1.3 GeV - initial current intensity ~ 50-70 mA - lifetime ~ 15 hours - effective bunch length < 1 ps - spectral range ~ 5 – 50 cm -1 • 6 blocks of 2 days per year (this will double with IR 2) Studies are going on to improve the source understanding First successful experiments on solid (SrTiO 3 ) and on protein (Cytochrome c)

Acknowledgments • the accelerator group at ANKA • Michael Süpfle, ANKA • Christian Bernhard, University of Fribourg, Switzerland • Alexander Boris, Bernhard Keimer, Max Planck Institute for Solid State Research, Stuttgart, Germany • Catherine Berthomieu, Protein Metal Interaction Laboratory, CEA- Cadarache, France • Rainer Hienerwadel, Plants Genetics and Biophysics Laboratory, University of Aix-Marseille, France • Mathieu Rouzière, SOLEIL, France