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2019-12-02
13:59
[PUBDB-2019-04657] Journal Article
et al
Design of Hard X-Ray Self-Seeding Monochromator for European XFEL
13th International Conference on Synchrotron Radiation Instrumentation, SRI2018, TaipeiTaipei, Taiwan, AIP conference proceedings 2054(1), 030016-1-[10] J. Gruenert, M. Planas Carbonell, F. Dietrich, W. Freund, A. Koch, N. Kujala, J. Laksman, J. Liu, and T. Maltezopoulos, This proceedings (2018). [11] M. Altarelli and et al, Technical Report ( 2006), preprint DESY 2006-097. [12] T. Limberg and W. Decking, Technical Note ( 2013), xFEL.EU TN-2013-004. [13] D. Shu, Y. Shvyd’ko, J. Amann, P. Emma, S. Stoupin, and Quintana, J. Phys.: Conf. Ser. p. 603 (2013). 030016-6 () [10.1063/1.5084579]  GO
Self-amplified spontaneous emission (SASE) XFELs are unique sources producing extremely powerful, ultra-short X-ray pulses. However, they rely on the amplification of the electron beam shot-noise, resulting in a relatively broad, spiky radiation spectrum. [...]
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2019-11-26
12:12
OpenAccess [PUBDB-2019-04482] Contribution to a conference proceedings
et al
The PolariX-TDS Project: Bead-Pull Measurements and High-Power Test on the Prototype
39th International Free-Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 JACoW Publishing, Geneva, Switzerland 396-399 () [10.18429/JACOW-FEL2019-WEP036]  GO
A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X- band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. The prototype of the novel X-band TDS, the Polarizable X-band (PolariX) TDS, was fabricated at PSI following the high-precision tuning-free production process developed for the C-band Linac of the SwissFEL project. [...]
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2019-11-22
14:12
OpenAccess [PUBDB-2019-04433] Contribution to a conference proceedings
et al
Test of Cs2Te Thickness on Cathode Performance at PITZ
39th International Free-Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 JACoW Publishing, Geneva, Switzerland 473-476 () [10.18429/JACOW-FEL2019-WEP062]  GO
Cesium telluride is a widely used cathode in photo injectors, and its performance is one of the keys for not only emittance but also reliable operation. Over the years lots of experiences with Cs2Te photocathodes produced with the same recipe and thickness were gained at the DESY photo injectors, but cathode performance dependence on the cathode layer thickness were not investigated. [...]
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2019-11-06
15:56
[PUBDB-2019-04011] Conference Presentation (Invited)
et al
Current photocathode lifetime at FLASH and European XFEL
European Workshop on Photocathodes for Particle Accelerator Applications 2019, EWPAA 2019, VilligenVilligen, Schweiz, 11 Sep 2019 - 13 Sep 20192019-09-112019-09-13
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2019-11-05
13:59
[PUBDB-2019-03922] Contribution to a conference proceedings

Update on the Photocathode Lifetime at FLASH and European XFEL
39th International Free Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 3 pp. ()
The photoinjectors of FLASH and the European XFELat DESY (Hamburg, Germany) are operated by laser driven RF-guns. In both facilities Cs2Te photocathodes are successfully used. [...]
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2019-10-30
15:26
[PUBDB-2019-03840] Conference Presentation (Invited)
et al
FLASH Cathode History
European Workshop on Photocathodes for Particle Accelerator Applications, EWPAA 2019, VilligenVilligen, Schweiz, 11 Sep 2019 - 13 Sep 20192019-09-112019-09-13
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2019-10-11
17:13
[PUBDB-2019-03662] Contribution to a conference proceedings
et al
Status of the PETRA IV project
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 1404-1407 () [10.18429/JACOW-IPAC2019-TUPGW011]  GO
Since 2016 DESY has been pursuing R towards upgrading its PETRA synchrotron light source to a fourth-generation machine, PETRA IV, which is expected to start operation in 2027. The conceptual design of a 6 GeV seven-bend-achromat-based lattice with an approx. [...]
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2019-10-11
16:22
[PUBDB-2019-03661] Contribution to a conference proceedings
et al
Overview of the ARES Bunch Compressor at SINBAD
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 902-905 () [10.18429/JACOW-IPAC2019-MOPTS025]  GO
Bunch compressors are essential for the generation of short bunches with applications in e.g. colliders, free electron lasers, and advanced accelerator concepts. [...]
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2019-10-01
12:00
[PUBDB-2019-03544] Contribution to a conference proceedings
et al
Operation of the European XFEL Towards the Maximum Energy
19th International Conference on RF Superconductivity, SRF2019, DresdenDresden, Germany, 30 Jun 2019 - 5 Jul 20192019-06-302019-07-05 0-2 ()
After the initial commissioning of the available 25 radio frequency (RF) stations of the European XFEL (RF gun, A1, AH1 and stations A2 through A23) a maximum electron beam energy of 14.5 GeV was achieved, 3 GeV short of the design energy of 17.5 GeV. In order to tackle this problem, the Maximum Gradient Task Force (MGTF) was formed. [...]
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2019-09-24
12:44
[PUBDB-2019-03440] Contribution to a conference proceedings
et al
SRF Operation at XFEL: Lessons Learned After More Than One Year
The 10th International Particle Accelerator Conference, IPAC2019, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 12-16 () [10.18429/JACOW-IPAC2019-MOYPLM2]  GO
The European XFEL is the largest high-field SRF installation in the world and has now been in operation more than a year. It serves as a 'prototype' for other facilities being constructed or in the planning stages. [...]
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