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2018-11-07
15:06
[PUBDB-2018-04285] Book/Report/Internal Report
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Transparencies from the Workshop on single-cell cavity R&D, Haus Rissen, Hamburg, Feb 28, 2002
[TESLA Report 2002-07]
TESLA Reports 118 pp. ()
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2018-11-06
14:28
[PUBDB-2018-04199] Book/Report/Internal Report
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RRR degradation and gas absorption in the electron beam welding area of high purity niobium
[TESLA Report 2003-07]
TESLA Reports 13 pp. () [10.1063/1.1597366]  GO
Experiences concerning RRR degradation and gas absorption of high purity niobium welded at different electron beam (EB) facilities are summarized. The oxygen and nitrogen content is increased as a rule at the welding seam. [...]
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2018-10-30
13:55
[PUBDB-2018-04057] Book/Report/Internal Report
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Nb-Pb superconducting RF gun
[TESLA-FEL 2005-09]
Seminar, Meeting location,
Contributions / Info
TESLA-FEL Reports 8 pp. ()
We report on the status of an electron RF-gun made of two superconductors: niobium and lead. The presented design combines the advantages of the RF performance of bulk niobium superconducting cavities and the reasonably high quantum efficiency of lead, as compared to other superconducting metals. [...]
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2018-10-17
15:04
OpenAccess [PUBDB-2018-03823] Contribution to a conference proceedings
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Retreatment of European XFEL Series Cavities at DESY as Part of the Repair of the European XFEL Accelerating Modules
29th Linear Accelerator Conference, LINAC2018, BeijingBeijing, China, 16 Sep 2018 - 21 Sep 20182018-09-162018-09-21 Geneva : JACoW 100-104 () [10.3204/PUBDB-2018-03823]  GO
For the European XFEL 102 accelerating modules were built and tested. Several accelerating modules had to be reworked due to different kinds of non-conformities. [...]
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2018-10-16
16:39
OpenAccess [PUBDB-2018-03813] Contribution to a conference proceedings
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SRF Gun Development at DESY
29th Linear Accelerator Cnference, LINAC18, BeijingBeijing, China, 17 Sep 2018 - 21 Sep 20182018-09-172018-09-21 Geneva : JACoW 20-24 () [10.3204/PUBDB-2018-03813]  GO
A future upgrade of the European XFEL (E-XFEL) foresees an additional CW operation mode, which will increase the flexibility in the photon beam time structure [1–3]. One of the challenges of this operational mode is the need fora CW operating photo injector. [...]
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2018-10-16
16:06
OpenAccess [PUBDB-2018-03812] Talk (non-conference) (Plenary/Keynote)
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SRF Gun Development at DESY : Electron beams for CW FELs
TESLA Technology Collaboration Meeting 2018 RIKEN, TTC2018 RIKEN, DESYWako-shi, DESY, Japan, 26 Jun 2018 - 29 Jun 20182018-06-262018-06-29  GO
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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
; ; ; et al
Fertigungsablauf des einzelligen Standard DESY 1.3 GHz Resonators aus Niob
[TTC-Report 2010‐01]
TESLA Reports 11 pp. ()
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2018-04-23
10:42
OpenAccess [PUBDB-2018-01803] Journal Article
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Influence of Tests Results on Serial Production of EXFEL Superconducting Cavities
III International Conference on Laser and Plasma Researches and Technologies, LaPlas-2017, MoscowMoscow, Russia, 24 Jan 2017 - 27 Jan 20172017-01-242017-01-27 Journal of physics / Conference Series 941, 012103 () [10.1088/1742-6596/941/1/012103]  GO
The European XFEL (EXFEL) 1.3 GHz cavities were produced without any final cold RF performance guarantee for characteristics like accelerating gradient, quality factor or field emission. In the case of low-performance, DESY provided all re-treatment procedures in order to improve these characteristics getting closer to specification levels. [...]
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2018-01-11
13:36
DBCoverage [PUBDB-2018-00489] Journal Article
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Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser
A full test of the cavity package concept under realistic operating condition was a necessary step before the assembly of the European XFEL (EXFEL) 3.9 GHz superconducting system and its installation in the accelerator. One cavity, equipped with magnetic shielding, power coupler and frequency tuner has been tested in a specially designed single cavity cryostat in one of the test benches of the DESY Accelerator Module Test Facility (AMTF). [...]
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