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2017-11-08
18:42
OpenAccess [PUBDB-2017-11787] Journal Article
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The FLASH Facility: Advanced Options for FLASH2 and Future Perspectives
ddc:600
Since 2016, the two free-electron laser (FEL) lines FLASH1 and FLASH2 have been run simultaneously for users at DESY in Hamburg. With the installation of variable gap undulators in the new FLASH2 FEL line, many new possibilities have opened up in terms of photon parameters for experiments. [...]
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2017-11-08
14:32
OpenAccess [PUBDB-2017-11770] Contribution to a conference proceedings/Contribution to a book
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First Operation of a Harmonic Lasing Self-Seeded FEL
38th International Free Electron Laser Conference, FEL 2017, Meeting locationSanta Fe, USA, 20 Aug 2017 - 25 Aug 20172017-08-202017-08-25 4 pp. (2017) [10.3204/PUBDB-2017-11770]  GO
Harmonic lasing is a perspective mode of operation of X-ray FEL user facilities that provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is so called Harmonic Lasing Self-Seeded Free Electron Laser (HLSS FEL) that improves spectral brightness of these facilities. [...]
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2017-08-30
13:56
OpenAccess [PUBDB-2017-10147] Contribution to a conference proceedings/Contribution to a book
; ; ; et al
First Operation of a Harmonic Lasing Self-Seeded FEL
8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19 Geneva : JACoW, 2621-2624 (2017) [10.18429/JACoW-IPAC2017-WEPAB023]  GO
Harmonic lasing is a perspective mode of operation of X-ray FEL user facilities that allows to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is so called Harmonic Lasing Self-Seeded Free Electron Laser (HLSS FEL) that allows to improve spectral brightness of these facilities. [...]
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2017-02-22
10:40
OpenAccess [PUBDB-2017-01078] Journal Article
; ; ; et al
First Operation of a Harmonic Lasing Self-Seeded Free Electron Laser
ddc:530
Harmonic lasing is a possible mode of operation of X-ray FEL user facilities that allows us to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is the so-called harmonic lasing self-seeded free electron laser (HLSS FEL) that allows the improvement of spectral brightness of these facilities. [...]
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2016-12-21
12:01
OpenAccess [PUBDB-2016-06533] Preprint/Report
; ; ; et al
First Operation of a Harmonic Lasing Self-Seeded Free Electron Laser
[DESY-16-243; arXiv:1612.03635]
 GO
Harmonic lasing is a perspective mode of operation of X-ray FEL user facilities that allows to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is so called Harmonic Lasing Self-Seeded Free Electron Laser (HLSS FEL) that allows to improve spectral brightness of these facilities. [...]
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2016-08-03
16:23
OpenAccess [PUBDB-2016-02787] Journal Article/Contribution to a conference proceedings
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Refurbishment of radiation-damaged undulators
Proceedings of the 12th International Conference on Synchrotron Radiation Instrumentation, SRI2015, Meeting locationNew York, NY USA, 6 Jul 2015 - 10 Jul 20152015-07-062015-07-10 AIP conference proceedings 1741, 020022 (2016) [10.1063/1.4952801]  GO
ddc:530
Partial radiation damage has been observed over the previous five years of operation for a few of the PETRA III permanent magnet undulators at DESY. The degradation of the affected devices has been observed by a change in the energy tuning curves and the spectral properties of the undulator harmonics, and also by direct measurements of the peak field distribution of the magnet structure in the storage ring tunnel [1]. [...]
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2016-08-03
16:10
OpenAccess [PUBDB-2016-02780] Journal Article/Contribution to a conference proceedings
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The PETRA III Extension
Proceedings of the 12th International Conference on Synchrotron Radiation Instrumentation, SRI2015, Meeting locationNew York, NY USA, 6 Jul 2015 - 10 Jul 20152015-07-062015-07-10 AIP conference proceedings 1741, 020035 (2016) [10.1063/1.4952814]  GO
ddc:530
The 3$^{rd}$ generation low-emittance 6 GeV PETRA III facility has been substantially modified to add new beamlines. This extension project involved the complete removal and reconstruction of part of the storage ring with a double-bend achromat lattice as well as the construction of two new experimental halls. [...]
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2016-08-03
16:07
OpenAccess [PUBDB-2016-02778] Journal Article/Contribution to a conference proceedings
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Properties of the insertion devices for PETRA III and its extension
Proceedings of the 12th International Conference on Synchrotron Radiation Instrumentation, SRI2015, Meeting locationNew York, NY USA, 6 Jul 2015 - 10 Jul 20152015-07-062015-07-10 AIP conference proceedings 1741, 020019 (2016) [10.1063/1.4952798]  GO
ddc:530
DESY presently operates 14 independent insertion device (ID) beamlines at its 6 GeV storage ring PETRA III. Besides the 2 m long standard undulators U29 and U32, several special IDs of up to 5 m length have been installed to meet the experimental requests for high energy X-rays, elliptically polarized light, and a higher degree of coherence. [...]
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2016-05-25
14:23
OpenAccess [PUBDB-2016-02027] Journal Article
; ; ; et al
Characterisation of the surface of freshly prepared precious metal catalysts
ddc:540
A combination of electron microscopy, X-ray and neutron spectroscopies and computational methods has provided new insights into the species present on the surface of freshly prepared precious metal catalysts. The results show that in all cases, at least half of the surface is metallic or nearly so, with the remainder covered by oxygen, largely as hydroxide. [...]
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2016-04-22
16:58
OpenAccess [PUBDB-2016-01753] Contribution to a conference proceedings
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Temperature Effects of the FLASH2 Undulators
International Free-Electron Laser Conference, FEL 2014, Meeting locationBasel, Switzerland, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 34-36 (2014)
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