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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
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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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2016-12-14
13:50
OpenAccess [PUBDB-2016-06156] Conference Presentation

LLRF System Installation for the European XFEL
5th MicroTCA workshop for industry and research, Meeting locationHamburg, Germany, 7 Dec 2016 - 8 Dec 20162016-12-072016-12-08
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This contribution presents an overview of the complete low level radio frequency system (LLRF) installation in the European x-ray free electron laser (E-XFEL). The focus is on the MicroTCA.4-based LLRF system architecture, testing and preliminary results. [...]
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2016-12-09
10:59
OpenAccess [PUBDB-2016-06055] Contribution to a conference proceedings

MicroTCA.4 Usage in the Femtosecond-Synchronization System at European XFEL - Enabling the XFEL for Femtosecond Precision User Experiments
5th MicroTCA workshop for industry and research, Meeting locationHamburg, Germany, 7 Dec 2016 - 8 Dec 20162016-12-072016-12-08
1-42 (2016) [10.3204/PUBDB-2016-06055]  GO
The optical synchronization system at the European XFEL serves as femtosecond-stable reference throughout the 3.5 km long facility. Its signal is essential for the pump-probe experiments, first by enabling the LLRF system to stabilize the the electron bunch arrival time and thereby the FEL X-ray pulse timing, and second by synchronizing the experimental laser to fs precision. [...]
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2016-12-08
12:03
OpenAccess [PUBDB-2016-06014] Contribution to a conference proceedings
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Self-Organzied Critical Control for the European XFEL Using Black Box Parameter Identification for the Quench Detection System
3rd Conference on Control and Fault-Tolerant Systems, SysTol’16, Meeting locationBarcelona, Spain, 7 Sep 2016 - 9 Sep 20162016-09-072016-09-09
196-201 (2016) [10.3204/PUBDB-2016-06014]  GO
The European Free Electron Laser (XFEL) consists of a large and complex plant, with many cost intensive and technological high-end components. It is therefore important that the XFEL can be operated reliably and safely using exception handling and fault detection systems. [...]
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2016-12-05
15:09
OpenAccess [PUBDB-2016-05889] Contribution to a conference proceedings
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Implementing a ReboT Server on a Microblaze
20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
1-3 (2016) [10.3204/PUBDB-2016-05889]  GO
Data acquisition over an IP network is convenient for diagnostics, monitoring and control applications. The ReboT protocol (Register Based Access Over TCP) extends the MTCA4U deviceaccess framework, letting it access supported hardware over TCP/IP. [...]
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2016-12-05
15:02
[PUBDB-2016-05888] Contribution to a conference proceedings/Contribution to a book
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RTM RF Backplane Extensions for MicroTCA.4 Crates –Concept and Performance Measurements
2014 19th IEEE-NPSS Real Time Conference : [Proceedings] - IEEE, 2014. - ISBN 978-1-4799-3659-5 - doi:10.1109/RTC.2014.7097413
20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
1-3 (2016) [10.1109/RTC.2014.7097413]  GO
The idea of the Rear Transition Module (RTM) Backplane was originally created to simplify cable management of an MicroTCA.4 based LLRF control system for the European XFEL project. The first RTM backplane (called an RF Backplane) was designed to distribute about dozen of precise RF and clock signals to uRTM cards. [...]
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2016-12-05
14:56
OpenAccess [PUBDB-2016-05885] Contribution to a conference proceedings
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An Ultra-fast Linear Array Detector for MHz Line Repetition Rate Spectroscopy
20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
1-2 (2016) [10.3204/PUBDB-2016-05885]  GO
We developed an ultra-fast linear detector with a frame rate of up to 10 6 frames per second (fps) in order to improve the acquisition rate and the resolution of Electro-Optical Spectral Decoding (EOSD) setups currently installed at several light sources (ANKA, European XFEL, TELBE).The system consists of a detector board, an FPGA readout board and a high-throughput data link. The detector board mounts a single linear array sensor with 256 pixels and a 50 μ m pitch. [...]
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2016-12-02
12:17
[PUBDB-2016-05856] Contribution to a conference proceedings
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Phase and Amplitude Drift Calibration of the RF Detectors in FELs LLRF Systems
20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
1-2 (2016)
One of the key components of Low-Level RF systems (LLRF) in Free Electron Lasers (FELs) is the RF field detector that converts the detected cavity field signal to an intermediate frequency (IF) for digital sampling. Temperature and humidity changes cause amplitude and phase drifts of the RF field detectors. [...]
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