MPY

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2018-04-10
15:30
DBCoverage [PUBDB-2018-01661] Report/Journal Article
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Detuning Related Coupler Kick Variation of a Superconducting Nine-Cell 1.3 GHz Cavity
[arXiv:1804.02487 ; DESY-17-215]
Superconducting TESLA-type cavities are widely used to accelerate electrons in long bunch trains, such as in high repetition rate free electron lasers. The TESLA cavity is equipped with two higher order mode couplers and a fundamental power coupler (FPC), which break the axial symmetry of the cavity. [...]
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ddc:530
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2018-04-03
15:45
OpenAccess [PUBDB-2018-01619] Conference Presentation

Fast Simulation of FEL Linacs with Collective Effects
60th ICFA Advanced Beam Dynamics Workshop on Future Light Sources, FLS2018, Meeting locationShanghai, China, 5 Mar 2018 - 9 Mar 20182018-03-052018-03-09  GO
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2018-04-03
08:36
OpenAccess [PUBDB-2018-01607] Preprint/Report

Analytical Impedance Models for Very Short Bunches
[DESY-18-038; arXiv:1803.06900]
 GO
We discuss several analytical models for impedances of very short bunches. The approximate analytical models are compared with direct solution of Maxwells equations..
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2018-03-23
09:30
OpenAccess [PUBDB-2018-01533] Contribution to a conference proceedings
; ; ; et al
Lattice Design for PETRA IV: Towards a Diffraction-Limited Storage Ring
60th ICFA Advanced Beam Dynamics Workshop on Future Light Sources, FLS2018, Meeting locationShanghai, China, 5 Mar 2018 - 9 Mar 20182018-03-052018-03-09 5 pp. (2018) [10.3204/PUBDB-2018-01533]  GO
Machine design for the PETRA III storage ring upgrade– PETRA IV – aiming at a 10-30 pm emittance range has been ongoing at DESY. We present the design challenges and approaches for this machine, the baseline lattice and the alternative lattice concepts currently under consideration..
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2018-02-22
15:31
OpenAccess [PUBDB-2018-01295] Contribution to a conference proceedings
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Uncorrelated Emittance Growth in the TTF-FEL Bunch Compression Sections due to Coherent Synchrotron Radiation and Space Charge Effects
Sixth European Particle Accelerator Conference, EPAC98, Meeting locationStockholm, Sweden, 22 Jun 1998 - 26 Jun 19981998-06-221998-06-26 3 pp. (1998) [10.3204/PUBDB-2018-01295]  GO
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2018-02-22
15:16
Embargoed OpenAccess [PUBDB-2018-01294] Journal Article/Contribution to a conference proceedings
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An Analysis of Longitudinal Phase Space Fragmentation at the TESLA Test Facility
22nd International Free Electron Laser Conference, FEL2000, Meeting locationDurham, USA, 13 Aug 2000 - 18 Aug 20002000-08-132000-08-18 Nuclear instruments & methods in physics research / A 475(1-3), 353 - 356 (2001) [10.1016/S0168-9002(01)01538-8]  GO
It has been repeatedly observed, at TTF-FEL, that the energy profile of the fully longitudinally compressed beam breaks up into peaks. In this paper we analyze a potential cause of this effect. [...]
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2018-02-08
16:31
arXiv [PUBDB-2018-01142] Report/Journal Article
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On Radiation Emission from a Microbunched Beam with Wavefront Tilt and its Experimental Observation
[DESY-17-093; arXiv:1706.10185]
In this paper we compare experimental observations and theory of radiation emission from a microbunched beam with microbunching wavefront tilt with respect to the direction of motion. The theory refers to the work [1], which predicts, in this case, exponential suppression of coherent radiation along the kicked direction. [...]
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2018-02-08
10:11
[PUBDB-2018-01125] Report
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Brilliant Beams Produced by the European XFEL
[APS DPB Annual Newsletter 2017]
9-11 (2017)
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2018-01-23
14:14
OpenAccess [PUBDB-2018-00768] Preprint/Report
; ; ; et al
An Adiabatic Phase-Matching Accelerator
[arXiv:1712.08403; FERMILAB-PUB-17-610-APC]
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We present a general concept to accelerate non-relativistic charged particles. Our concept employs an adiabatically-tapered dielectric-lined waveguide which supports accelerating phase velocities for synchronous acceleration. [...]
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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 Physics Control Systems, ICALEPCS2017, Meeting locationBarcelona, Spain, 8 Oct 2017 - 13 Oct 20172017-10-082017-10-13 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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