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2018-04-19
15:42
[PUBDB-2018-01795] Journal Article
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Die Vakuumsysteme des European XFEL : Ultrahochvakuum ermöglicht Betrieb des neuen Röntgenlasers der Superlative und erlaubt bisher unerreichte Einblicke in den Nanokosmos
Für den European XFEL ist Vakuum eine Grundvoraussetzung für den erfolgreichen Betrieb. Neben den Vakuumeigenschaften war dafür eine Vielzahl anderer Randbedingungen an die Komponenten zu erfüllen. [...]
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2017-12-21
15:14
OpenAccess [PUBDB-2017-13966] Contribution to a conference proceedings/Contribution to a book
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Analysis of the Production, Installation and Commissioning of the European-XFEL Frequency Tuners
18th International Conference on RF Superconductivity, SRF2017, Meeting locationLanzhou, China, 17 Jul 2017 - 21 Jul 20172017-07-172017-07-21 JACoW, 5 pp. (2017) [10.3204/PUBDB-2017-13966]  GO
In the European-XFEL superconducting linac, mechanical frequency tuners equipped with stepper motors and piezoelectric actuators provide cold tuning of each of the 768 1.3 GHz cavities. More than 820 complete tuning systems were fabricated and pre-assembled in industry, tested at several stages before and after assembly and successfully commissioned during cryo-module cold tests at AMTF (DESY). [...]
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2017-11-29
18:17
OpenAccess [PUBDB-2017-12557] Poster
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Update on the Lifetime of $\mathrm{Cs_2}$Te Cathodes Operated at the FLASH Facility
38th International Free-Electron Laser Conference, FEL 2017, Meeting locationSanta Fe, USA, 20 Aug 2017 - 25 Aug 20172017-08-202017-08-25  GO
The photoinjector of the free-electron laser facilityFLASH at DESY (Hamburg, Germany) uses Cs2Te photocathodes.We give an update on lifetime and quantumefficiency of cathodes operated at FLASH during the lastyears. At the time of the conference, cathode 73.3 has beenoperated with a record of 933 days with a stable quantumefficiency of in average 8.8 %..
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2017-11-29
18:03
OpenAccess [PUBDB-2017-12554] Contribution to a conference proceedings/Contribution to a book
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Update on the lifetime of $\mathrm{Cs_2}$Te cathodes operated at the FLASH facility
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-2017-12554]  GO
The photoinjector of the free-electron laser facility FLASH at DESY (Hamburg, Germany) uses Cs2Te photocathodes.We give an update on lifetime and quantumefficiency of cathodes operated at FLASH during the lastyears. At the time of the conference, cathode 73.3 has been operated with a record of 933 days with a stable quantum efficiency of in average 8.8 %..
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2017-08-24
16:21
OpenAccess [PUBDB-2017-09777] Contribution to a conference proceedings/Contribution to a book
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X-Band TDS Project
International Particle Accelerator Conference (8th)
8th International Particle Accelerator Conference, IPAC2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19
Geneva : JACoW, 184-187 (2017) [10.18429/JACoW-IPAC2017-MOPAB044]  GO
Based on the success of the X-Band Transverse Deflecting Structure (TDS) diagnostic at LCLS*, a collaboration between DESY, PSI and CERN has formed with the aim of developing and building an advanced modular X-Band TDS system. The designed TDS has the new feature of providing variable polarization of the deflecting field**. [...]
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2017-08-24
15:34
OpenAccess [PUBDB-2017-09772] Poster
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Particle Generation of CapaciTorr Pumps
8th International Particle Accelerator Conference, IPAC2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19  GO
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2017-08-24
15:17
OpenAccess [PUBDB-2017-09768] Contribution to a conference proceedings/Contribution to a book
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Particle Generation of CapaciTorr Pumps
8th International Particle Accelerator Conference, IPAC2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 Geneva : JACoW, 3 pp. (2017) [10.18429/JACoW-IPAC2017-WEPVA048]  GO
Non Evaporable Getter pumps have been used since four decades in various scientific and industrial Ultra High and Extremely Ultra High Vacuum applications. For the majority of applications properties like high pumping speed vs. [...]
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2017-08-24
14:42
OpenAccess [PUBDB-2017-09763] Contribution to a conference proceedings/Contribution to a book
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Status Update of the SINBAD-ARES Linac Under Construction at DESY
8th International Particle Accelerator Conference, IPAC2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 Geneva : JACoW, 3 pp. (2017) [10.18429/JACoW-IPAC2017-TUPAB040]  GO
ARES (Accelerator Research Experiment at Sinbad) is a linear accelerator for the production of low charge (from few pC to sub-pC) electron bunches with 100 MeV energy, fs and sub-fs duration and excellent arrival time stability. This experiment is currently under construction at DESY Hamburg and it is foreseen to start operation by the beginning of 2018 with the commissioning of the RF-gun. [...]
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2017-08-24
11:43
OpenAccess [PUBDB-2017-09736] Contribution to a conference proceedings/Contribution to a book
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Accelerator Module Repair for the European XFEL Installation
18th International Conference on RF Superconductivity, SRF2017, Meeting locationLanzhou, China, 17 Jul 2017 - 21 Jul 20172017-07-172017-07-21 5 pp. (2017) [10.3204/PUBDB-2017-09736]  GO
Repair actions of different extent have been performed at 61 of the 100 accelerating series modules for the European XFEL to qualify them for tunnel installation. Four modules could not be repaired in time. [...]
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2016-12-07
10:20
OpenAccess [PUBDB-2016-05971] Report/Conference Presentation (Plenary/Keynote)
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Commissioning of the European XFEL Injector
[TUOCA03]
7th International Particle Accelerator Conference, IPAC16, Meeting locationBusan, Korea, 8 May 2016 - 13 May 20162016-05-082016-05-13  GO
The European XFEL Injector consists of an L-Band RF photoinjector, a TESLA type 1.3 GHz module, a 3rd har-monic RF section, a laser heater and an extensive diag-nostic section to determine projected and slice properties of the beam. The commissioning of the complete system has been started in December 2015 after several years of construction. [...]
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