IBIC2014 - List of Authors (Noelle, D.)

Paper	Title	Page
MOPF13	Wire Scanner Installation into the MicroTCA Environment for the European XFEL	73
	T. Lensch, A. Delfs, V. Gharibyan, I. Krouptchenkov, D. Nölle, M. Pelzer, H. Tiessen, M. Werner, K. Wittenburg DESY, Hamburg, Germany
	The European XFEL (E-XFEL) is a 4th generation synchrotron radiation source currently under construction in Hamburg. The 17.5 GeV superconducting accelerator will provide photons simultaneously to several user stations []. For the transverse beam profile measurement in the high energy sections Wire Scanners are used as an essential part of the accelerator diagnostic system, providing the tool to measure small beam size in an almost nondestructive manner. The scanners will be operated in a fast mode, starting from a trigger the wire will be accelerated to 1 m/s and hitting about 100 bunches out of the long bunch train of E-XFEL within a single macropulse. Slow scans with single bunches are also possible. In the first stage 12 stations are planned to be equipped with Wire Scanners where each station consists of two motion units (horizontal and vertical plane). The new concept uses linear servo motors for the motion of the wires and a new mechanical design has been developed at DESY []. This paper describes the electronics developments for the motion part of these Wire Scanners and the integration into the MicroTCA environment. [] "XFEL Technical Design Report", DESY 2006-097, http://xfel.desy.de [**] "OVERVIEW ON E-XFEL STANDARD ELECTRON BEAM DIAGNOSTICS", D.Nölle, BIW 2010, Santa Fe
	Poster MOPF13 [1.760 MB]
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TUPF05	Production Process for the European XFEL Re-Entrant Cavity BPM	307
	C.S. Simon, P. Carbonnier, P. Contrepois, F. Éozénou, Y. Gasser, O. Napoly, J. Novo, C. Servouin CEA/DSM/IRFU, France C. Boulch, Y. Gasser CEA/IRFU, Gif-sur-Yvette, France P. Daniel-Thomas, F. Gouit CEA, Gif-sur-Yvette, France J. Kruse, D. Nölle, M. Schalwat, S. Vilcins DESY, Hamburg, Germany N. Rouvière IPN, Orsay, France
	As In-Kind contributor to the E-XFEL project, CEA is committed to the procurement of around one third (31) cold beam position monitors (BPM) of the re-entrant RF cavities type and to the assembly on the Saclay site of the 101 cryomodules of the superconducting linac. Each cryomodule is equipped with a beam position monitor connected to a quadrupole at the high-energy end of the cavity string. The industrial process of those BPMs, used in an ultra-clean environment at cryogenic temperature, includes several steps and involves a quality control in collaboration with industrial partners. This paper describes the different steps of the re-entrant cavity BPM fabrication process: machining, copper coating, thermal treatment, EB welding, cleaning and mounting in clean room on the quadrupole. Problems encountered and the lessons learnt will be also reported.
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TUPF07	FLASH Undulator BPM Commissioning and Beam Characterization Results	315
	D. Lipka, N. Baboi, D. Nölle, G. Petrosyan, S. Vilcins DESY, Hamburg, Germany R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler PSI, Villigen PSI, Switzerland
	Recently, the commissioning of FLASH2 has started, a new soft X-ray FEL undulator line at the DESY FLASH facility. In the FLASH2 undulator intersections, the beam positions are measured by 17 cavity beam position monitor (CBPM) pick-ups and electronics* developed for the European XFEL (E-XFEL). In addition four CBPMs are available at FLASH1 for test and development. The new CBPM system enables an unprecedented position and charge resolution at FLASH, thus allowing further analysis and optimization of the FLASH beam quality and overall accelerator performance. Results of first beam measurements as well as correlations with other FLASH diagnostics systems are reported. * M. Stadler et al., “Low-Q Cavity BPM Electronics for E-XFEL, FLASH-2 and SwissFEL”, this conference.
	Poster TUPF07 [1.112 MB]
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WEPF02	A Toroid Based Bunch Charge Monitor System with Machine Protection Features for FLASH and XFEL	521
	M. Werner, T. Lensch, J. Lund-Nielsen, Re. Neumann, D. Nölle, N. Wentowski DESY, Hamburg, Germany
	For the superconducting linear accelerators FLASH and XFEL, a new toroid based charge measurement system has been designed as a standard diagnostic tool. It is also a sensor for the bunch charge stabilization feedback and for machine protection. The system is based on MTCA.4 technology and will offer a high dynamic range and high sensitivity. The machine protection features will cover recognition of poor transmission between adjacent toroid sensors, bunch pattern consistency checks, and protection of the beam dumps. The concept, an overview of the algorithms, and the implementation will be described. A summary of first operation experience at FLASH will be presented.
	Poster WEPF02 [1.113 MB]
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WEPF15	Status of the Standard Diagnostic Systems of the European XFEL	569
	D. Nölle DESY, Hamburg, Germany
	The European XFEL, an X-ray free-electron-laser user facility based on a 17.5 GeV superconducting LINAC, is currently under construction close to the DESY site at Hamburg. DESY is in charge of the construction of the accelerator. This contribution will report the status of the standard diagnostic systems of this facility. The design phase has finished for all main systems; most of the components are in production or are already produced. This paper will show details of the main systems, their installation issues and will report on the further time schedule. Furthermore, the experience from the commissioning of the RF gun with beam will be reported.
	Poster WEPF15 [5.427 MB]
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WEPD12	Low-Q Cavity BPM Electronics for E-XFEL, FLASH-II and SwissFEL	670
	M. Stadler, R. Baldinger, R. Ditter, B. Keil, F. Marcellini, G. Marinkovic, M. Roggli, M. Rohrer PSI, Villigen PSI, Switzerland D. Lipka, D. Nölle, S. Vilcins DESY, Hamburg, Germany
	PSI has developed BPM electronics for low-Q cavity BPMs that will be used in the E-XFEL and FLASH-II undulators, as well as in SwissFEL injector, linac and transfer lines. After beam tests at the SwissFEL test injector and FLASH, a pre-series of the electronics has been produced, tested and commissioned at FLASH-II [1]. The design, system features, signal processing techniques, lab-based test and calibration system as well as latest measurement results are reported.
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THIXB1	Commissioning of the FLASH2 Electron Beam Diagnostics in Respect to its use at the European XFEL	712
	N. Baboi, D. Nölle DESY, Hamburg, Germany
	This report presents the first operation experience of the electron beam diagnostics at FLASH2. FLASH2 is a new undulator line at the FLASH linac at DESY. Most electron beam diagnostics installed, like the beam loss monitors, cavity beam position monitors, toroids, beam halo monitors, have been designed for the European XFEL, and will provide operational experience beforehand. A few systems, as for example the button beam position monitors and the ionization chambers, have been developed for FLASH. The controls use the new MTCA.4 standard. Both linacs, FLASH and the European XFEL, require similar performance of the diagnostics systems. Many beam parameters are similar: bunch charge of 0.1 to 1 nC, pulse repetition frequency of 10 Hz, while others will be more critical at the XFEL than the ones currently used at FLASH, like the bunch frequency of up to 4.5 MHz. versus 1 MHz. The commissioning of FLASH2 and its diagnostics is ongoing. The beam monitors have accompanied the first beam through the linac, fine tuning for some systems is still to be done. The achieved performance will be presented in view of their use at the European XFEL.
	Slides THIXB1 [3.875 MB]
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Paper

Title

Page

Wire Scanner Installation into the MicroTCA Environment for the European XFEL

73

T. Lensch, A. Delfs, V. Gharibyan, I. Krouptchenkov, D. Nölle, M. Pelzer, H. Tiessen, M. Werner, K. Wittenburg
DESY, Hamburg, Germany

The European XFEL (E-XFEL) is a 4th generation synchrotron radiation source currently under construction in Hamburg. The 17.5 GeV superconducting accelerator will provide photons simultaneously to several user stations [*]. For the transverse beam profile measurement in the high energy sections Wire Scanners are used as an essential part of the accelerator diagnostic system, providing the tool to measure small beam size in an almost nondestructive manner. The scanners will be operated in a fast mode, starting from a trigger the wire will be accelerated to 1 m/s and hitting about 100 bunches out of the long bunch train of E-XFEL within a single macropulse. Slow scans with single bunches are also possible. In the first stage 12 stations are planned to be equipped with Wire Scanners where each station consists of two motion units (horizontal and vertical plane). The new concept uses linear servo motors for the motion of the wires and a new mechanical design has been developed at DESY [**]. This paper describes the electronics developments for the motion part of these Wire Scanners and the integration into the MicroTCA environment.
[*] "XFEL Technical Design Report", DESY 2006-097, http://xfel.desy.de
[**] "OVERVIEW ON E-XFEL STANDARD ELECTRON BEAM DIAGNOSTICS", D.Nölle, BIW 2010, Santa Fe

Poster MOPF13 [1.760 MB]

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TUPF05

Production Process for the European XFEL Re-Entrant Cavity BPM

307

C.S. Simon, P. Carbonnier, P. Contrepois, F. Éozénou, Y. Gasser, O. Napoly, J. Novo, C. Servouin
CEA/DSM/IRFU, France
C. Boulch, Y. Gasser
CEA/IRFU, Gif-sur-Yvette, France
P. Daniel-Thomas, F. Gouit
CEA, Gif-sur-Yvette, France
J. Kruse, D. Nölle, M. Schalwat, S. Vilcins
DESY, Hamburg, Germany
N. Rouvière
IPN, Orsay, France

As In-Kind contributor to the E-XFEL project, CEA is committed to the procurement of around one third (31) cold beam position monitors (BPM) of the re-entrant RF cavities type and to the assembly on the Saclay site of the 101 cryomodules of the superconducting linac. Each cryomodule is equipped with a beam position monitor connected to a quadrupole at the high-energy end of the cavity string. The industrial process of those BPMs, used in an ultra-clean environment at cryogenic temperature, includes several steps and involves a quality control in collaboration with industrial partners. This paper describes the different steps of the re-entrant cavity BPM fabrication process: machining, copper coating, thermal treatment, EB welding, cleaning and mounting in clean room on the quadrupole. Problems encountered and the lessons learnt will be also reported.

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

TUPF07

FLASH Undulator BPM Commissioning and Beam Characterization Results

315

D. Lipka, N. Baboi, D. Nölle, G. Petrosyan, S. Vilcins
DESY, Hamburg, Germany
R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler
PSI, Villigen PSI, Switzerland

Recently, the commissioning of FLASH2 has started, a new soft X-ray FEL undulator line at the DESY FLASH facility. In the FLASH2 undulator intersections, the beam positions are measured by 17 cavity beam position monitor (CBPM) pick-ups and electronics* developed for the European XFEL (E-XFEL). In addition four CBPMs are available at FLASH1 for test and development. The new CBPM system enables an unprecedented position and charge resolution at FLASH, thus allowing further analysis and optimization of the FLASH beam quality and overall accelerator performance. Results of first beam measurements as well as correlations with other FLASH diagnostics systems are reported.
* M. Stadler et al., “Low-Q Cavity BPM Electronics for E-XFEL, FLASH-2 and SwissFEL”, this conference.

Poster TUPF07 [1.112 MB]

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WEPF02

A Toroid Based Bunch Charge Monitor System with Machine Protection Features for FLASH and XFEL

521

M. Werner, T. Lensch, J. Lund-Nielsen, Re. Neumann, D. Nölle, N. Wentowski
DESY, Hamburg, Germany

For the superconducting linear accelerators FLASH and XFEL, a new toroid based charge measurement system has been designed as a standard diagnostic tool. It is also a sensor for the bunch charge stabilization feedback and for machine protection. The system is based on MTCA.4 technology and will offer a high dynamic range and high sensitivity. The machine protection features will cover recognition of poor transmission between adjacent toroid sensors, bunch pattern consistency checks, and protection of the beam dumps. The concept, an overview of the algorithms, and the implementation will be described. A summary of first operation experience at FLASH will be presented.

Poster WEPF02 [1.113 MB]

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WEPF15

Status of the Standard Diagnostic Systems of the European XFEL

569

D. Nölle
DESY, Hamburg, Germany

The European XFEL, an X-ray free-electron-laser user facility based on a 17.5 GeV superconducting LINAC, is currently under construction close to the DESY site at Hamburg. DESY is in charge of the construction of the accelerator. This contribution will report the status of the standard diagnostic systems of this facility. The design phase has finished for all main systems; most of the components are in production or are already produced. This paper will show details of the main systems, their installation issues and will report on the further time schedule. Furthermore, the experience from the commissioning of the RF gun with beam will be reported.

Poster WEPF15 [5.427 MB]

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WEPD12

Low-Q Cavity BPM Electronics for E-XFEL, FLASH-II and SwissFEL

670

M. Stadler, R. Baldinger, R. Ditter, B. Keil, F. Marcellini, G. Marinkovic, M. Roggli, M. Rohrer
PSI, Villigen PSI, Switzerland
D. Lipka, D. Nölle, S. Vilcins
DESY, Hamburg, Germany

PSI has developed BPM electronics for low-Q cavity BPMs that will be used in the E-XFEL and FLASH-II undulators, as well as in SwissFEL injector, linac and transfer lines. After beam tests at the SwissFEL test injector and FLASH, a pre-series of the electronics has been produced, tested and commissioned at FLASH-II [1]. The design, system features, signal processing techniques, lab-based test and calibration system as well as latest measurement results are reported.

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THIXB1

Commissioning of the FLASH2 Electron Beam Diagnostics in Respect to its use at the European XFEL

712

N. Baboi, D. Nölle
DESY, Hamburg, Germany

This report presents the first operation experience of the electron beam diagnostics at FLASH2. FLASH2 is a new undulator line at the FLASH linac at DESY. Most electron beam diagnostics installed, like the beam loss monitors, cavity beam position monitors, toroids, beam halo monitors, have been designed for the European XFEL, and will provide operational experience beforehand. A few systems, as for example the button beam position monitors and the ionization chambers, have been developed for FLASH. The controls use the new MTCA.4 standard. Both linacs, FLASH and the European XFEL, require similar performance of the diagnostics systems. Many beam parameters are similar: bunch charge of 0.1 to 1 nC, pulse repetition frequency of 10 Hz, while others will be more critical at the XFEL than the ones currently used at FLASH, like the bunch frequency of up to 4.5 MHz. versus 1 MHz. The commissioning of FLASH2 and its diagnostics is ongoing. The beam monitors have accompanied the first beam through the linac, fine tuning for some systems is still to be done. The achieved performance will be presented in view of their use at the European XFEL.

Slides THIXB1 [3.875 MB]

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