MVS

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2018-08-17
11:22
[PUBDB-2018-02999] Book/Report
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Analysis of RF results of recent Nine-Cell cavities at DESY
[TTC-Report 2009-01]
TESLA Reports 5 pp. ()
About 50 nine-cell cavities of the recent fine-grain niobium cavity productions have been analysed with respect to maximum and usable gradient in the first and last vertical RF acceptance test, respectively. Parameters of the analysis were the manufacturer of the cavities, the location of the Main EP (=> industry or in-house), the final surface treatment (=> final 40 μm EP or short 10 μm “Flash BCP) and the cavity preparation strategy (=> vertical acceptance test with or without He-tank welded) [...]
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2018-08-17
11:22
[PUBDB-2018-02997] Book/Report
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Fertigungsablauf des einzelligen Standard DESY 1.3 GHz Resonators aus Niob
[TTC Report 2010‐01]
TESLA Reports 11 pp. ()
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2018-08-17
11:21
[PUBDB-2018-02996] Book/Report
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1.3 GHz NiobiumSingle‐Cell Fabrication Sequence
[TTC Report 2010‐01]
TESLA Reports 11 pp. ()
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2018-05-29
16:05
OpenAccess [PUBDB-2018-02138] Poster
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Metal Photocathodes Preparation for Compact Linear Accelerator at Daresbury Laboratory
9th International Particle Accelerator Conference, IPAC'18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04  GO
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2018-05-29
15:56
OpenAccess [PUBDB-2018-02137] Poster
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The REGAE Accelerator Vacuum System
9th International Particle Accelerator Conference, IPAC'18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04  GO
Since 2011 the Relativistic Electron Gun for Atomic Exploration (REGAE) is operated at DESY in Hamburg. The accelerator consists mainly of a high gradient S-band RF-gun, which generates ultra-low emittance electron bunches, and an S-band RF-buncher cavity for bunch compression. [...]
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2018-05-29
11:22
OpenAccess [PUBDB-2018-02128] Poster
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Cs$_2$Te Photocathode Lifetime at FLASH and European XFEL
The 9th International Particle Accelerator Conference, IPAC'18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04  GO
The photoinjectors of FLASH and the European XFEL at DESY (Hamburg, Germany) use Cs$_2$ Te photocathodes. In this contribution we give an update on the lifetime and quantum efficiency of the cathodes operated in both facilities [...]
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2018-05-15
17:22
OpenAccess [PUBDB-2018-01981] Contribution to a conference proceedings
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Status of the ARES RF Gun at SINBAD: From its Characterization and Installation Towards Commissioning
9th International Particle Accelerator Conference, IPAC'18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04 3 pp. () [10.3204/PUBDB-2018-01981]  GO
The SINBAD facility (Short and INnovative Bunches and Accelerators at DESY) is foreseen to host multiple experiments relating to the production of ultra-short electron bunches and novel high gradient acceleration techniques. The SINBAD-ARES linac will be a conventional S-band linear RF accelerator allowing the production of low charge (0.5 pC - tens pC) ultra-short electron bunches (FWHM length ≤ fs - few fs) with 100 MeV energy. [...]
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2018-04-19
15:42
Embargoed OpenAccess [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, LanzhouLanzhou, China, 17 Jul 2017 - 21 Jul 20172017-07-172017-07-21 JACoW 5 pp. () [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, Santa FeSanta 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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