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2018-08-17
14:34
[PUBDB-2018-03027] Book/Report
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Timing requirements and proposal of atiming concept for the European XFEL
[TESLA-FEL 2006-13; TESLA 2006-12]
TESLA Reports 13 pp. ()
In the initial development stage the future European XFEL offersfive beamlines to users performing experiments with FEL light in the x-ray range. One re-quirement to the accelerator is to supply electron beams to the different user beamlines almost at the same time. [...]
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2018-08-17
11:29
[PUBDB-2018-03004] Book/Report
; ; ; et al
Final Surface Preparation for superconducting cavities: An attempt to describe an optimized procedure
[TTC-Report 2008-05]
TESLA Reports 53 pp. ()
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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-2018-02998] Book/Report
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RRR-Measurement Techniques on High Purity Niobium
[TTC-Report 2010-02]
TESLA Reports 17 pp. ()
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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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2018-08-17
11:21
[PUBDB-2018-02996] Book/Report
; ; ; et al
1.3 GHz NiobiumSingle‐Cell Fabrication Sequence
[TTC Report 2010‐01]
TESLA Reports 11 pp. ()
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2018-08-17
10:37
[PUBDB-2018-02992] Book/Report
; ; ; et al
Update on large grain cavities with 45 MV/M in a Nine-Cell cavity at DESY
[TTC-Report 2011-01]
TESLA Reports 4 pp. ()
Since 2009 a series of eight nine-cell cavities (AC151 – AC158) of TESLA shape fabricated of large grain (LG) niobium material is under preparation and test at DESY. In a first step all cavities were tested after a BCP treatment. [...]
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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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2017-12-21
16:03
OpenAccess [PUBDB-2017-13971] Contribution to a conference proceedings/Contribution to a book
; ; ; et al
Limits for the Operation of the European XFEL 3.9 GHz System in CW Mode
8th International Particle Accelerator Conference, IPAC2017, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 JACoW 1023-1026 () [10.3204/PUBDB-2017-13971]  GO
Future upgrades of the European XFEL (EXFEL) facility may require driving the linac at higher duty factor, possibly extending to CW mode at reduced gradients. A preliminary analysis for the accelerator modules has been presented in the EXFEL TDR, but no precise assessment has been performed so far for the present 3.9 GHz system design. [...]
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