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2017-07-05
15:31
OpenAccess [PUBDB-2017-06943] Contribution to a conference proceedings/Contribution to a book
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Installation and First Commissioning of the LLRF System for the European XFEL
8th International Particle Accelerator Conference, IPAC´17, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19
3638-3641 (2017) [10.3204/PUBDB-2017-06943]  GO
The installation of the European X-ray Free Electron Laser (XFEL) is finished, leaving place for its commissioning phase. This contribution summarizes the low-level radiofrequency (LLRF) commissioning with a special emphasis on the development of automation tools to support the commissioning of such a large scale accelerator. [...]
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2017-07-05
14:57
OpenAccess [PUBDB-2017-06938] Conference Presentation

Installation and First Commissioning of the LLRF System for the European XFEL
8th International Particle Accelerator Conference, IPAC´17, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19
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2017-07-04
15:31
OpenAccess [PUBDB-2017-06867] Contribution to a conference proceedings
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Experience with Single Cavity and Piezo Controls for Short, Long Pulse and CW Operation
8th International Particle Accelerator Conference, IPAC`17, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19
3966-3968 (2017) [10.3204/PUBDB-2017-06867]  GO
We present a compact RF control system for superconducting radio frequency (SCRF) single cavities based on MicroTCA.4 equipped with specialized advanced mezzanine cards (AMCs) and rear transition modules (RTMs). To sense the RF signals from the cavity and to drive the high power source, a DRTM-DWC8VM1 module is used equipped with 8 analog field detectors and one RF vector modulator. [...]
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2017-07-04
15:20
OpenAccess [PUBDB-2017-06865] Poster
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Experience with Single Cavity and Piezo Controls for Short, Long Pulse and CW Operation
8th International Particle Accelerator Conference, IPAC`17, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19
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2017-06-06
14:48
OpenAccess [PUBDB-2017-04356] Contribution to a conference proceedings
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Linear and Nonlinear Optics Analysis from Multiturn Data at PETRA III
8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19
4 p. (2017) [10.3204/PUBDB-2017-04356]  GO
At Petra III measuring multiturn beam response to pulsed and continuous excitations allows linear and nonlinear (e.g. frequency maps) optics parameter determination. [...]
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2017-05-01
22:44
OpenAccess [PUBDB-2017-02117] Book/Report/Dissertation / PhD Thesis
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Laser-to-RF Phase Detection with Femtosecond Precision for Remote Reference Phase Stabilization in Particle Accelerators
[DESY-THESIS-2017-016]
DESY-THESIS 174 pp. (2017) [10.3204/PUBDB-2017-02117] = Technische Universität Hamburg Harburg, Diss., 2016  GO
The invention of a femtosecond stable Laser-to-RF phase detector allows to measure with femtosecond precision the relative phase between a phase stable optical reference and an RF signal. Thereby one can stabilize RF reference signals in modern FELs on a femtosecond scale. [...]
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2017-04-12
10:21
OpenAccess [PUBDB-2017-01661] Journal Article
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Jitter-correction for IR/UV-XUV pump-probe experiments at the FLASH free-electron laser
ddc:530
In pump-probe experiments employing a free-electron laser (FEL) in combination with a synchronized optical femtosecond laser, the arrival-time jitter between the FEL pulse and the optical laser pulse often severely limits the temporal resolution that can be achieved. Here, we present a pump-probe experiment on the UV-induced dissociation of 2,6-difluoroiodobenzene $(C_{6}H_{3}F_{2}I)$ molecules performed at the FLASH FEL that takes advantage of recent upgrades of the FLASH timing and synchronization system to obtain high-quality data that are not limited by the FEL arrival-time jitter. [...]
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2017-01-02
10:35
OpenAccess [PUBDB-2017-00011] Conference Presentation
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High Voltage Power Module Pluggable to NAT RTM Power Supply Carrier
5th MicroTCA workshop for industry and research, Meeting locationHamburg, Germany, 7 Dec 2016 - 8 Dec 20162016-12-072016-12-08
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In the paper we want to present High Voltage Power Module (HVPM) pluggable to Micro Telecommunication Computing Architecture generation four (MTCA.4) based Rear Transition Module (RTM) Power Supply Carrier (PSC) and its possible applications. The idea is to have a possiblity to power supply RTM cards that demands specific voltages above 12VDC. [...]
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2016-12-20
15:54
OpenAccess [PUBDB-2016-06461] Poster
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ChimeraTK: A Toolkit for Modular Control Applications
11th International Workshop on Personal Computers and Particle Accelerator Controls, PCaPAC 2016, Meeting locationCampinas, Brazil, 25 Oct 2016 - 28 Oct 20162016-10-252016-10-28
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The DESY ChimeraTK (formerly called MTCA4U) is a collection of C++ libraries which facilitate the development of control applications. Special importance has been placed on abstraction from communication layers to simplify writing applications in heterogenous environments or reusing applications in a different facility. [...]
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2016-12-15
17:04
OpenAccess [PUBDB-2016-06264] Conference Presentation
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Model Based Fast Protection System for High Power RF Tube Amplifiers Used at European XFEL Accelerator
20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
 GO
The driving engine of the superconducting accelerator of the European X-ray Free-Electron Laser (XFEL) are 27 Radio Frequency (RF) stations. Each of an underground RF station consists from multi-beam horizontal klystron which can provide up to 10MW of power at 1.3GHz. [...]
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