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2018-04-17
14:45
OpenAccess [PUBDB-2018-01732] Journal Article
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Towards ultrafast dynamics with split-pulse X-ray photon correlation spectroscopy at free electron laser sources
One of the important challenges in condensed matter science is to understand ultrafast, atomic-scale fluctuations that dictate dynamic processes in equilibrium and non-equilibrium materials. Here, we report an important step towards reaching that goal by using a state-of-the-art perfect crystal based split-and-delay system, capable of splitting individual X-ray pulses andintroducing femtosecond to nanosecond time delays. [...]
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ddc:500
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2016-11-23
10:26
[PUBDB-2016-05538] Journal Article
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Angular vibrations of cryogenically cooled double-crystal monochromators
The effect of angular vibrations of the crystals in cryogenically cooled monochromators on the beam performance has been studied theoretically and experimentally. A simple relation between amplitude of the vibrations and size of the focused beam is developed. [...]
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ddc:540
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2016-08-03
16:12
Embargoed OpenAccess [PUBDB-2016-02781] Journal Article/Contribution to a conference proceedings
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Photon Beamline Frontends for the PETRA III Extension Project
Proceedings of the 12th International Conference on Synchrotron Radiation Instrumentation, SRI2015, New YorkNew York, NY USA, 6 Jul 2015 - 10 Jul 20152015-07-062015-07-10 AIP conference proceedings 1741, 020041 () [10.1063/1.4952820]  GO
The photon beamline frontend design for the new insertion device (ID) beamlines of the PETRA III extension project will be presented. The design is based on the concepts developed for the photon beamline frontends at PETRA III. [...]
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2016-07-08
10:42
OpenAccess [PUBDB-2016-02568] Contribution to a conference proceedings/Contribution to a book
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Operation of Free Electron Laser FLASH Driven by Short Electron Pulses
7th International Particle Accelerator Conference, IPAC16, BusanBusan, Korea, 8 May 2016 - 13 May 20162016-05-082016-05-13 732-734 ()
The program of low charge mode of operation is under development at free electron laser FLASH aiming in single mode radiation pulses. A short pulse photoinjector laser has been installed at FLASH allowing production of ultrashort electron pluses with moderate compression factor of the beam formation system. [...]
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2015-11-11
09:49
OpenAccess [PUBDB-2015-04669] Journal Article
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Vibration measurements of high-heat-load monochromators for DESY PETRA III extension
The requirement for vibrational stability of beamline optics continues to evolverapidly to comply with the demands created by the improved brilliance of thethird-generation low-emittance storage rings around the world. The challengeis to quantify the performance of the instrument before it is installed at thebeamline. [...]
ddc:540
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2015-07-09
22:47
[PUBDB-2015-02560] Journal Article
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Resonant inelastic X-ray scattering spectrometer with 25 meV resolution at the Cu K -edge
An unparalleled resolution is reported with an inelastic X-ray scattering instrument at the Cu K-edge. Based on a segmented concave analyzer, featuring single-crystal quartz (SiO2) pixels, the spectrometer delivers a resolution near 25 meV (FWHM) at 8981 eV. [...]
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2015-06-24
09:26
Hybrid OpenAccess [PUBDB-2015-02327] Journal Article
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The Extreme Conditions Beamline P02.2 and the Extreme Conditions Science Infrastructure at PETRA III
A detailed description is presented of the Extreme Conditions Beamline P02.2for micro X-ray diffraction studies of matter at simultaneous high pressure andhigh/low temperatures at PETRA III, in Hamburg, Germany. This includesperformance of the X-ray optics and instrumental resolution as well as anoverview of the different sample environments available for high-pressurestudies in the diamond anvil cell. [...]
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2015-04-24
08:29
OpenAccess [PUBDB-2015-01986] Journal Article
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Beamline P02.1 at PETRA III for High-Resolution and High-Energy Powder Diffraction
Powder X-ray diffraction techniques largely benefit from the superior beam quality provided by high-brilliance synchrotron light sources in terms of photon flux and angular resolution. The High Resolution Powder Diffraction Beamline P02.1 at the storage ring PETRA III (DESY, Hamburg, Germany) combines these strengths with the power of high-energy X-rays for materials research. [...]
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2014-04-09
10:11
DBCoverage [DESY-2014-02536] Journal Article
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Wavefront preserving channel-cut optics for coherent x-ray scattering experiments at the P10 beamline at PETRAIII
We report on the performance of cryogenically cooled monolithic Si(111) channel-cut monochromator optics installed at the coherence beamline P10 of the PETRA III synchrotron source. Our results show that a high quality channel-cut monochromator crystal preserves the beam wavefront and provides excellent beam stability, which offers considerable benefits for coherent x-ray scattering experiments..
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2014-03-13
10:57
OpenAccess [DESY-2014-02357] Patent
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Schnellschlussventil
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