IBIC2015 - List of Authors (Schmidt-Foehre, F.)

Paper	Title	Page
TUPB014	Development Status and Performance Studies of the New MicroTCA Based Button and Strip-line BPM Electronics at FLASH 2	335
	B. Lorbeer, N. Baboi, H.T. Duhme, F. Schmidt-Föhre, K. Wittenburg DESY, Hamburg, Germany
	The FLASH (Free Electron Laser in Hamburg) facility at DESY (Deutsches Elektronen-Synchrotron) in Germany has been extended by the new undulator line FLASH2 providing twice as many experimental stations for users in the future. After the acceleration of the electron bunch train up to 1.2GeV in FLASH, a part of the beam can be kicked into FLASH2, while the other is going to the old undulator line of FLASH I. The commissioning phase of FLASH2 started in early 2014 and is continued parasitically during user operation in FLASH1. One key point during first beam commissioning is the availability of standard diagnostic devices such as Beam Position Monitors (BPMs). In the last couple of years new electronics for button and strip-line BPMs have been developed, based on the MTCA.4 standard. This new Low Charge BPM (LCBPM) system is designed to work with bunch charges as small as 100 pC in contrast to the old systems at FLASH initially designed for bunch charges of 1nC and higher. This paper summarizes the performance of the BPM system and discusses the applied methods based on beam based correlation techniques to study the system.
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WECLA02	Commissioning of the New Online-Radiation-Monitoring-System at the New European XFEL Injector with First Tests of the High-Sensitivity-Mode for Intra-Tunnel Rack Surveillance	585
	F. Schmidt-Föhre, L. Fröhlich, D. Nölle, R. Susen, K. Wittenburg DESY, Hamburg, Germany
	The new Embedded Online-Radiation-Monitoring-System, developed for the 17.5 GeV superconducting European XFEL (E-XFEL) that is currently being built between the DESY campus at Hamburg and Schenefeld at Schleswig-Holstein [1,2], has been commissioned in a first system test setup at the E-XFEL Injector. As most of the electronic systems for machine control, diagnostics and safety of the E-XFEL will be located in cabinets inside the accelerator tunnel, the test setup incorporates all system parts like cabinet-internal and -external monitor electronics, infrastructure interface boards, firmware, software, cabling and sensors. Hence the commissioning system setup gives the possibility for first operation of the complete online radiation monitoring system under realistic environmental conditions in terms of irradiation, electromagnetic interference (EMI) inside the injector tunnel, as well as operational and control system aspects. Commissioning results and measurements based on different internal and external sensor channels will be presented here, together with recent measurements done at different radiation sources using the high-sensibility mode for intra-rack radiation monitoring.
	Slides WECLA02 [6.171 MB]
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Paper

Title

Page

Development Status and Performance Studies of the New MicroTCA Based Button and Strip-line BPM Electronics at FLASH 2

335

B. Lorbeer, N. Baboi, H.T. Duhme, F. Schmidt-Föhre, K. Wittenburg
DESY, Hamburg, Germany

The FLASH (Free Electron Laser in Hamburg) facility at DESY (Deutsches Elektronen-Synchrotron) in Germany has been extended by the new undulator line FLASH2 providing twice as many experimental stations for users in the future. After the acceleration of the electron bunch train up to 1.2GeV in FLASH, a part of the beam can be kicked into FLASH2, while the other is going to the old undulator line of FLASH I. The commissioning phase of FLASH2 started in early 2014 and is continued parasitically during user operation in FLASH1. One key point during first beam commissioning is the availability of standard diagnostic devices such as Beam Position Monitors (BPMs). In the last couple of years new electronics for button and strip-line BPMs have been developed, based on the MTCA.4 standard. This new Low Charge BPM (LCBPM) system is designed to work with bunch charges as small as 100 pC in contrast to the old systems at FLASH initially designed for bunch charges of 1nC and higher. This paper summarizes the performance of the BPM system and discusses the applied methods based on beam based correlation techniques to study the system.

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WECLA02

Commissioning of the New Online-Radiation-Monitoring-System at the New European XFEL Injector with First Tests of the High-Sensitivity-Mode for Intra-Tunnel Rack Surveillance

585

F. Schmidt-Föhre, L. Fröhlich, D. Nölle, R. Susen, K. Wittenburg
DESY, Hamburg, Germany

The new Embedded Online-Radiation-Monitoring-System, developed for the 17.5 GeV superconducting European XFEL (E-XFEL) that is currently being built between the DESY campus at Hamburg and Schenefeld at Schleswig-Holstein [1,2], has been commissioned in a first system test setup at the E-XFEL Injector. As most of the electronic systems for machine control, diagnostics and safety of the E-XFEL will be located in cabinets inside the accelerator tunnel, the test setup incorporates all system parts like cabinet-internal and -external monitor electronics, infrastructure interface boards, firmware, software, cabling and sensors. Hence the commissioning system setup gives the possibility for first operation of the complete online radiation monitoring system under realistic environmental conditions in terms of irradiation, electromagnetic interference (EMI) inside the injector tunnel, as well as operational and control system aspects. Commissioning results and measurements based on different internal and external sensor channels will be presented here, together with recent measurements done at different radiation sources using the high-sensibility mode for intra-rack radiation monitoring.

Slides WECLA02 [6.171 MB]

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)