Contribution to a book

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2018-02-08
10:52
[PUBDB-2018-01129] Contribution to a conference proceedings/Contribution to a book
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High-resolution grating interferometer for phase-contrast imaging at PETRA III
Proceedings of Developments in X-Ray Tomography XI
Developments in X-Ray Tomography XI, Meeting locationSan Diego, United States, 6 Aug 2017 - 10 Aug 20172017-08-062017-08-10
SPIE, 1039108-1-1039108-10 (2017) [10.1117/12.2273892]  GO
Phase-contrast imaging has proven to be a valuable tool when investigating weak absorbing materials like soft tissue, due to its increased contrast compared to conventional absorption-contrast imaging. While propagation-based phase-contrast is an ideal tool to achieve highest resolution at a good contrast for almost not-absorbing material, it quickly comes to its limitations on applications demanding for a high dynamic range in contrast. [...]

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2018-01-31
13:23
OpenAccess [PUBDB-2018-00933] Contribution to a conference proceedings/Contribution to a book
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Concept for the Minimization of the Electron Bunch Arrival-Time Jitter between Femtosecond Laser Pulses and Electron Bunches for Laser-Driven Plasma Wakefield Accelerators
6th International Beam Instrumentation Conference, IBIC17, Meeting locationGrand Rapids, Michigan, USA, 20 Aug 2017 - 24 Aug 20172017-08-202017-08-24 JACoW, 4 pp. (2017) [10.3204/PUBDB-2018-00933]  GO
Using laser driven plasma wakefield accelerators, the synchronization between electron bunch and the ultrashort laser is crucial to obtain an stable acceleration. In order to minimize the electron bunch arrival-time jitter, the development of a new shot to shot feedback system with a time resolution of less than 1 fs is planned. [...]
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2018-01-31
13:12
OpenAccess [PUBDB-2018-00931] Contribution to a conference proceedings/Contribution to a book
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A Nanofabricated Wirescanner: Design, Fabrication and Experimental Results
6th International Beam Instrumentation Conference, IBIC17, Meeting locationGrand Rapids, Michigan, USA, 20 Aug 2017 - 24 Aug 20172017-08-202017-08-24 JACoW, 4 pp. (2017) [10.3204/PUBDB-2018-00931]  GO
Measuring the transverse size of electron beams is of crucial importance in modern accelerators, from large colliders to free electron lasers to storage rings. For this reason severalkind of diagnostics have been developed such as: optical transition radiation screens, scintillating screens, laser scanners and wirescanners. [...]
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2018-01-31
13:00
OpenAccess [PUBDB-2018-00930] Contribution to a conference proceedings/Contribution to a book
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MicroTCA.4-based LLRF For CW Operation at ELBE - Status and Outlook
6th International Beam Instrumentation Conference, IBIC17, Meeting locationGrand Rapids, Michigan, USA, 20 Aug 2017 - 24 Aug 20172017-08-202017-08-24 JACoW, 3 pp. (2017) [10.3204/PUBDB-2018-00930]  GO
The superconducting linear accelerator ELBE at Helmholtz -Zentrum Dresden-Rossendorf is operated in continuous wave (CW) operation [1] . The analogue LLRF (low level radio frequency) system, used since 2001, is going to be replaced by a digital solution based on MicroTCA.4. [...]
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2018-01-29
11:44
[PUBDB-2018-00894] Contribution to a conference proceedings/Contribution to a book
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A CEP-stable, femtosecond 8.5 μm source based on intrapulse DFG of 2.1 μm pulses
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) : [Proceedings] - IEEE, 2017. - ISBN 978-1-5090-6736-7 - doi:10.1109/CLEOE-EQEC.2017.8086730
Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference, CLEO/Europe-EQEC, Meeting locationMünchen, Germany, 25 Jun 2017 - 29 Jun 20172017-06-252017-06-29
Washington, D.C., USA : IEEE, 1 pp. (2017) [http://dx.doi.org/10.1109/CLEOE-EQEC.2017.8086730]  GO
Few-cycle carrier-envelope phase (CEP) stable laser pulses enable the precise control of strong-field electron dynamics, such as high-harmonic generation in gases and solids or electron emission in nano-structures [1]. The intrapulse difference-frequency generation (DFG) pumped by a broadband pulse is a reliable method of producing passively CEP-stable pulses. [...]
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2018-01-24
11:06
OpenAccess [PUBDB-2018-00780] Contribution to a conference proceedings/Contribution to a book
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External Injection Into a Laser-Driven Plasma Accelerator With Sub-Femtosecond Timing Jitter
8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19 Geneva : JACoW, 1699-1702 (2017) [10.18429/JACoW-IPAC2017-TUPIK009]  GO
The use of external injection in plasma acceleration is attractive due to the high control over the electron beam parameters, which can be tailored to meet the plasma requirements and therefore preserve its quality during acceleration. However, using this technique requires an extremely fine synchronization between the driver and witness beams. [...]
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2018-01-23
15:36
OpenAccess [PUBDB-2018-00771] Contribution to a conference proceedings/Contribution to a book
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Lattice Considerations for the Use of an X-Band Transverse Deflecting Structure (TDS) at SINBAD
8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19 Geneva : JACoW, 4 pp. (2017) [10.18429/JACoW-IPAC2017-MOPAB046]  GO
An X-band TDS is a well-known device for the characterization of the longitudinal properties of an electron bunch in a linear accelerator. It is planned that a novel X-band TDS with variable polarization* will be installed within the next few years at SINBAD, an upcoming accelerator R&D facility at DESY**. [...]
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2018-01-23
11:28
OpenAccess [PUBDB-2018-00757] Contribution to a conference proceedings/Contribution to a book
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Matching Space-charge Dominated Electron Bunches into the Plasma Accelerator at SINBAD
8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19 Geneva : JACoW, 3 pp. (2017) [10.18429/JACoW-IPAC2017-THPVA007]  GO
The SINBAD facility (Short and INnovative Bunches and Accelerators at DESY) is foreseen to provide sub-fs to tens of fs electron bunches for Laser Wake-Field Acceleration (LWFA) experiments. In order to avoid emittance growth in plasma cells with ultra-high accelerating gradients the injection and transport of electron bunches with beta functions of mm-size or even smaller are required. [...]
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2018-01-18
11:34
OpenAccess [PUBDB-2018-00686] Contribution to a conference proceedings/Contribution to a book
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Material Tests for the ILC Positron Source
8th International Particle Accelerator Conference, IPAC 2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 Geneva : JACoW, 1293-1295 (2017) [10.3204/PUBDB-2018-00686]  GO
The positron source is a vital system of the ILC. The conversion target that yields about 10$^{14}$ positrons per second will undergo high peak and cyclic load during ILC operation. [...]
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2018-01-17
16:46
OpenAccess [PUBDB-2018-00682] Contribution to a conference proceedings/Contribution to a book
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Fast Image Analysis for Beam Profile Measurement at the European XFEL
16th International Conference on Accelerator and Large Experimental Control Systems, ICALEPCS2017, Meeting locationBarcelona, Spain, 8 Oct 2017 - 13 Jan 20182017-10-082018-01-13 JACoW, 4 pp. (2017) [10.3204/PUBDB-2018-00682]  GO
At the European XFEL, images of scintillator screens are processed at a rate of 10 Hz. Dedicated image analysis servers are used for transversal beam profile analysis as well as for longitudinal profile and slice emittance measurement [...]
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