Laser heating at P02.2 at PETRA III, capabilities and planning W. Morgenroth1, Z. Konôpková2, H.-P. Liermann2, B. Winkler1 1Goethe-Universität Frankfurt am Main 2Deutsches Elektronen Synchrotron (DESY), Hamburg Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 2 Research with Photons at DESY Three generations of X-ray sources in one place: DORIS III 2nd generation, 5 GeV machine till 22th of October PETRA III 3rd generation, 6 GeV machine FLASH 4th generation, VUV and soft X-ray range European XFEL 4th generation, hard X-ray range starting in 2015-2016 PETRA III at DESY Max von Laue experimental hall Parameters: Length: 2304 m Energy: 6.0 GeV Current: 100 mA Bunches: 960 or 40 Horizontal emittance: 1 nmrad Most brilliant 3rd generation high energy source: Positron beam with small horizontal emittance Small source in undulator produces a photon beam with very small divergence X-ray beam can be focused well Time resolved experiments in the Hz frequency range W. Morgenroth, Uni Frankfurt 4 Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 5 Extreme Conditions Beamline (ECB) P02.2 at the Hard X-Ray Diffraction Beamlines for Time Resolved Studies P02 • • fixed energies: 25.6, 42.7, 60.0 keV focus (FWHM) at 42.7 keV: – Kirkpatrick-Baez mirrors 1.5 x 1.5 µm or – Compact Refractive Lenses 4 x 8 µm • sample stack with 100 nm precision • • • PerkinElmer XRD 1621 detectors MarIP imaging plate Pilatus 1M detector (pool) • • gas membrane (not for all types of cells) online ruby pressure at both tables LH (left) GP (right) General Laser heating purpose table table X-rays W. Morgenroth, Uni Frankfurt 6 Laser heating table • X-rays and detector • Observation and spectrometer path • Fiber laser • Ruby laser and spectrometer detector W. Morgenroth, Uni Frankfurt 7 Laser heating table Observation path: • Ag coated glassy carbon mirrors • geoHEAT 60_NIR objectives • Prosilica cameras directly inspecting the sample, highly sensitive to see the fluorescence of the X-ray beam (~ 5 sec exposure) • inspection at mirror pinhole in front of spectrometer by movable Pellicle beamsplitter 4 2 W. Morgenroth, Uni Frankfurt 1 3 8 Laser heating table Observation path: • New: Andor shamrock spectrometer and iStar iCCD (fast, no filters necessary) • two-sided temperature measurement by spectral radiometry (up- and downstream in parallel using double pinhole) • 45 watt quartz-halogen tungsten coiled filament lamp (Gooch & Housego), standard of correlated color X-rays temperature W. Morgenroth, Uni Frankfurt 9 Off-axis laser heating setup Laser path: • one 100 W NIR fiber laser 1064 nm • split into upstream and downstream path • polarizing beam splitter cubes and λ/2 waveplates in rotators to control the power • movement of lasers independent of (re)alignment of observation path W. Morgenroth, Uni Frankfurt 1 3 2 4 5 10 Off-axis laser heating setup Laser path: • change of laser focus possible • not necessarily an optical element in path of X-rays • but: basic alignment might be more difficult due to reflection in diamond • planning: exchange the stepper motor system by Newport MFA linear stages with sub micron resolution Temperature range: 1000 K – 4000 K W. Morgenroth, Uni Frankfurt 11 Temperature determination • collection of up- and downstream spectra in parallel • exposure time in the second to sub-second range • analysis by BGI program at once • wavelength range usable: 550 to 850 nm • example: Pt foil in symmetric DAC, up- and downstream W. Morgenroth, Uni Frankfurt 12 Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 13 On-axis laser heating W. Morgenroth, Uni Frankfurt 14 On-axis laser heating 1 • 200 W IPG fiber laser, 1064 nm • experiments reaching for ultimate high pressure • but: glassy carbon mirrors for laser beam transport in X-ray beam path • but: no independent change of laser focus • therefore: this path will 2 include piShapers W. Morgenroth, Uni Frankfurt X-rays 15 Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 16 Fluorescence setup • Vortex detector (and expertise) from beamline L • XOS Capillary with 50 mm focal length, input focal spot size <= 160 µm @ 17.4 keV • grid scans implemented in control software Online • parallel mapping of fluorescence and X-ray diffraction (XRF, XRD) W. Morgenroth, Uni Frankfurt 1 2 17 Fluorescence setup • special preparation of diamond anvil cell necessary! • 1st experiments by Manuela Borchert, Karen Appel (DESY) and Sylvain Petitgirard (ESRF) W. Morgenroth, Uni Frankfurt 18 Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 19 CO2 laser heating system • at present: offline setup in laser lab • 100 W Synrad CO2 laser • off-axis setup parallel to the fiber laser • one-sided heating • for transparent samples • power control using an Acusto Optical Modulator • commissioning in fall 2012 W. Morgenroth, Uni Frankfurt 20 Outline • PETRA III at DESY • Extreme Conditions Beamline (ECB) – off-axis laser heating – on-axis laser heating – fluorescence setup – CO2 laser heating system – Extreme Conditions Science Infrastructure • Outlook W. Morgenroth, Uni Frankfurt 21 Extreme Conditions Science Infrastructure (ECSI) • sample preparation: microscopes, gasket preparation, furnaces, glove box, … • gas loading system for Ar, Ne, N2, He (at present: for symmetric cells with membrane) • preparation of Be gaskets is under safety evaluation (available according to prior agreement) • offline laser heating system (in commissioning) • offline Raman system (in commissioning) • offline Brillouin scattering system (by GFZ Potsdam) Open for users with more or less (laser heating) experience! (limited number of beginner groups) W. Morgenroth, Uni Frankfurt 22 Outlook • pulsed laser heating: is in commissioning by Zuzana Konôpková, Alexander Goncharov and Vitali Prakapenka, available in 2014 • „pink beam“ option: available end of 2014 • installation of beam optics for „pink beam” in spring 2013 • shutdown due to PETRA III extension: May till December 2013 • deadlines for new projects at DESY Photon Science facilities: 1th of March and 1th of September (no call next March) W. Morgenroth, Uni Frankfurt 23 Up to date information Facilities / PETRA III / Beamlines / P02 Hard X-Ray Diffraction Beamline for Time Resolved Studies W. Morgenroth, Uni Frankfurt 24 Science beyond 4 Mbar and using dynamic compression workshop organized by DESY and European XFEL: Liermann / Toleikis / Tschentscher 18th and 19th of October in Hamburg List of speakers: C. Barnes (LANL) R. Collins (LLNL) T. Duffy (Princeton) L. Dubrovinsky (BGI) S. Glenzer (LLNL) A. Goncharov (GL) T. Kenkmann (U Freiburg) P. Loubeyre (CEA) C. Pickard (UCL) R. Redmer (U Rostock) Ch. Schroer (TU Dresden) T. Spohn (DLR) C.-S. Yoo (U Wash. St) W. Morgenroth, Uni Frankfurt 25 Thank you • Zuzana Konôpková, Hanns-Peter Liermann, Anita Ehnes, Jan Torben Delitz, Bican Yilmaz (DESY) • Alexandra Friedrich, Lkhamsuren Bayarjargal, David Merges, Björn Winkler (Uni Frankfurt) • SPP1236, DFG • Funding by BMBF projects 05KS7RF1 and 05K10RFA W. Morgenroth, Uni Frankfurt 26