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2018-08-17
11:42
[PUBDB-2018-03009] Book/Report

Overview of electrical axis measurement in TESLA-type cavities
[TESLA Report 2007-01]
TESLA Reports 7 pp. ()
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2018-08-17
11:23
[PUBDB-2018-03000] Book/Report

Electrical axes of TESLA-type cavities
[TESLA Report 2008-01]
TESLA Reports 23 pp. ()
Cells in TESLA cavities after the fabrication are detuned and strongly misaligned. Before cavities are installed into a cryomodule the cells must be aligned and their resonance frequencies must be corrected to obtain equal field amplitudes of the accelerating TM010-π mode in all cells [...]
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2017-04-25
14:30
OpenAccess [PUBDB-2017-01882] Journal Article
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Performance in the vertical test of the 832 nine-cell 1.3 GHz cavities for the European X-ray Free Electron Laser
The successful production and associated vertical testing of over 800 superconducting 1.3 GHz accelerating cavities for the European X-ray Free Electron Laser (XFEL) represents the culmination of over 20 years of superconducting radio-frequency R&D. The cavity production took place at two industrial vendors under the shared responsibility of INFN Milano–LASA and DESY. [...]
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2017-02-09
13:46
OpenAccess [PUBDB-2017-00929] Contribution to a conference proceedings
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RF Analysis Of Electropolishing For EXFEL Cavities Production At Ettore Zanon SPA
28th Linear Accelerator Conference, LINAC 16, East Lansing, MIEast Lansing, MI, USA, 25 Sep 2016 - 30 Sep 20162016-09-252016-09-30 Geneva : JACoW 3 pp. () [10.3204/PUBDB-2017-00929]  GO
After successful finishing of superconducting cavities mass production at Ettore Zanon S.p.A. (EZ) for the European XFEL (EXFEL), the authors had the possibility to provide a detailed analysis of the electropolishing (EP) process. [...]
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2017-02-09
13:31
OpenAccess [PUBDB-2017-00927] Contribution to a conference proceedings
; ; ; et al
HOM Suppression Improvement For Mass Production Of EXFEL Cavities At RI
28th Linear Accelerator Conference, LINAC 16, East Lansing, MIEast Lansing, MI, USA, 25 Sep 2016 - 30 Sep 20162016-09-252016-09-30 Geneva : JACoW 3 pp. () [10.3204/PUBDB-2017-00927]  GO
During cold RF tests of the European XFEL (EXFEL) cavities at DESY it was observed that the damping of the second monopole mode (TM011) showed the largest variation, which was sometimes up to 2-3 times lower than the originally allowed limit. It was concluded that this TM011-damping degradation was caused by cavity geometry deviation within the specified mechanical tolerances. [...]
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2017-01-10
08:55
OpenAccess [PUBDB-2017-00386] Journal Article
; ; ; et al
Production of Superconducting 1.3-GHz Cavities for the European X-Ray Free Electron Laser
The production of over 800 1.3-GHz superconducting (SC) cavities for the European X-ray Free Electron Laser (EXFEL), the largest in the history of cavity fabrication, has now been successfully completed. In the past, manufacturing of SC resonators was only partly industrialized; the main challenge for the EXFEL production was transferring the high-performance surface treatment to industry. [...]
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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, BusanBusan, 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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2016-12-06
14:59
OpenAccess [PUBDB-2016-05948] Contribution to a conference proceedings
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Error Estimation in Cavity Performance Test for the European XFEL at DESY
7th International Particle Accelerator Conference, IPAC16, BusanBusan, Korea, 8 May 2016 - 13 May 20162016-05-082016-05-13 3 pp. () [10.3204/PUBDB-2016-05948]  GO
The construction of EU-XFEL [1] in DESY is on-going steadily in the final stage. The cavity performance in vertical cryomodule test is satisfactory for the XFEL specification[2]. [...]
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2016-12-01
11:47
OpenAccess [PUBDB-2016-05804] Contribution to a conference proceedings
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Dry-Ice Cleaning of RF-Structures at DESY
28th Linear Accelerator Conference, LINAC2016, East LansingEast Lansing, USA, 25 Sep 2016 - 30 Sep 20162016-09-252016-09-30 4 pp. () [10.3204/PUBDB-2016-05804]  GO
Dry-Ice cleaning is today a well established cleaning method in matters of reducing harmful dark current and field emission in copper RF structureslike RF-Guns such as for the European XFEL, FLASH and REGAE. This led to the idea to clean longer RF-structures, in particular 3GHz transverse deflecting structures for the European XFEL [...]
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2016-11-30
15:44
OpenAccess [PUBDB-2016-05790] Conference Presentation (Invited)

Performance of Superconducting Cavities for the European XFEL
7th International Particle Accelerator Conference, IPAC16, Deutsches Elektronen-Synchrotron DESYBusan, Deutsches Elektronen-Synchrotron DESY, Korea, 8 May 2016 - 13 May 20162016-05-082016-05-13  GO
The superconducting accelerator of the European XFEL consists of the injector part and the main linac. The injector includes one 1.3 GHz accelerator module and one 3.9 GHz third-harmonic module, while the main linac consists of 100 accelerator modules, each housing eight1.3 GHz TESLA-type cavities, operated at an average design gradient of 23.6 MV/m. [...]
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