MKS 3

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2017-12-22
15:02
OpenAccess [PUBDB-2017-14086] Poster
et al
Use of PROFIBUS for Cryogenic Instrumentation at XFEL
2017 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC 2017, DESY HamburgMadison, DESY Hamburg, USA, 9 Jul 2017 - 13 Jul 20172017-07-092017-07-13  GO
The European X-ray Free Electron Laser (XFEL) is a research facility and since December 2016 under commissioning at DESY in Hamburg. The XFEL superconducting accelerator is 1.5 km long and contains 96 superconducting accelerator modules. [...]
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2017-12-18
16:19
OpenAccess [PUBDB-2017-13659] Talk (non-conference) (Invited)
et al
European XFEL Procurement Strategy – Lessons Learned
TTC Meeting February 2017, Michigan State UniversityEast Lansing, Michigan State University, USA, 21 Feb 2017 - 24 Feb 20172017-02-212017-02-24  GO
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2017-11-16
16:35
OpenAccess [PUBDB-2017-12069] Contribution to a conference proceedings
et al
Commissioning and First Cooldown of XFEL Linac
2017 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC 2017, MadisonMadison, USA, 9 Jul 2017 - 13 Jul 20172017-07-092017-07-13 8 pp. () [10.3204/PUBDB-2017-12069]  GO
Beam commissioning of the European X-ray Free Electron Laser (European XFEL project) is ongoing. Commissioning the XFEL cryogenic system has started by cooling down the XFEL injector section in December 2015. [...]
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2017-04-25
15:00
OpenAccess [PUBDB-2017-01886] Contribution to a conference proceedings
et al
Performance Analysis of the European XFEL SRF cavities, fromvertical test to operation in modules
28th Linear Accelerator Conference, LINAC2016, East LansingEast Lansing, USA, 25 Sep 2016 - 30 Sep 20162016-09-252016-09-30 6 pp. () [10.3204/PUBDB-2017-01886]  GO
More than 800 resonators have been fabricated, verti-cally qualified and operated in module tests before the accelerating module installation in the linac, which will be completed before the conference. An analysis of this experience, with correlation of the final cavity perfor-mances with production, preparation and assembly stages, is underway and at the time of the conference a summary of the activities will be available..
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2017-01-10
09:02
OpenAccess [PUBDB-2017-00389] Journal Article
et al
Results of the Magnetic Measurements of the Superconducting Magnets for the European XFEL
A new linear accelerator, i.e., the European X-ray Free-Electron Laser (XFEL), is under construction at DESY in Hamburg. The construction started in early 2009, and the commissioning is planned for 2016. [...]
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2017-01-09
12:15
Embargoed OpenAccess [PUBDB-2017-00299] Journal Article
et al
Defect detection inside superconducting 1.3 GHz cavities by means of x-ray fluorescence spectroscopy
Review of scientific instruments 87(1), 013103-1 - 013103-9 () [10.1063/1.4939611]  GO
X-ray fluorescence probe for detection of foreign material inclusions on the inner surface of superconducting cavities has been developed and tested. The setup detects trace element content such as a few micrograms of impurities responsible for thermal breakdown phenomena limiting the cavity performance. [...]
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2016-10-24
10:23
OpenAccess [PUBDB-2016-04362] Conference Presentation (Invited)
et al
Performance Analysis of the European XFEL SRF Cavities, from Vertical Test to Operation in Modules
28th Linear Accelerator Conference, LINAC2016, East LansingEast Lansing, USA, 25 Sep 2016 - 30 Sep 20162016-09-252016-09-30
More than 800 resonators have been fabricated, vertically qualified and operated in module tests before the accelerating module installation in the linac, which will be completed before the conference. An analysis of this experience, with correlation of the final cavity performances with production, preparation and assembly stages, is underway and at the time of the conference a summary of the activities will be available..
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2015-12-23
11:03
OpenAccess [PUBDB-2015-06208] Contribution to a conference proceedings
et al
Preparation of the 3.9 GHz System for the European XFEL Injector Commissioning
17th International Conference on RF Superconductivity, SRF2015, WhistlerWhistler, Canada, 13 Sep 2015 - 18 Sep 20152015-09-132015-09-18 1-5 ()
The 3.9 GHz cryomodule and RF system for the XFEL Injector is being assembled and delivered to the underground building in summer 2015, for the injector commissioning in Fall 2015. This contribution outlines the status of the activity and reports the preparation stages of the technical commissioning of the system..
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2015-12-23
10:51
OpenAccess [PUBDB-2015-06207] Contribution to a conference proceedings
et al
Horizontal RF Test of a Fully Equipped 3.9 GHz Cavity for the European XFEL in the DESY AMTF
17th International Conference on RF Superconductivity, SRF2015, WhistlerWhistler, Canada, 13 Sep 2015 - 18 Sep 20152015-09-132015-09-18 1-5 ()
In order to validate the cavity package concept before the module preparation for the European XFEL Injector, one 3.9 GHz cavity, complete with magnetic shielding, power coupler and frequency tuner was tested in a specially designed single cavity cryomodule in one of the caves of the DESY Accelerator Module Test Facility (AMTF). The cavity was tested in high power pulsed operation up to the quench limit of 24 MV/m, above the vertical test qualifications and all subsystems under test (coupler, tuner, waveguide tuners, LLRF system) were qualified to design performances..
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2015-12-22
17:29
OpenAccess [PUBDB-2015-06204] Conference Presentation
et al
ILC-HiGrade cavities as a tool of quality control for the EXFEL and further SRF R&D
DPG 2015, WuppertalWuppertal, Germany, 9 Mar 2015 - 13 Mar 20152015-03-092015-03-13
The order for superconducting radio-frequency (SRF) cavities for the European XFEL includes an additional set of 24 cavities which are part of the ILC-HiGrade program. Initially, these cavities serve as quality control (QC) sample extracted in parallel to the EXFEL cavities series production on a regular basis. [...]
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