MPY

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2019-08-15
14:57
OpenAccess [PUBDB-2019-03025] Report/Journal Article
et al
Compact Multistage Plasma-Based Accelerator Design for Correlated Energy Spread Compensation
[arXiv:1811.07757]
The extreme electromagnetic fields sustained by plasma-based accelerators could drastically reduce the size and cost of future accelerator facilities. However, they are also an inherent source of correlated energy spread in the produced beams, which severely limits the usability of these devices. [...]
OpenAccess: PhysRevD.99.114008 - Download fulltextPDF Download fulltextPDF (PDFA); Ferran Pousa_multistage_compensation - Download fulltextPDF Download fulltextPDF (PDFA);
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2019-08-07
17:22
OpenAccess [PUBDB-2019-02936] Contribution to a conference proceedings/Contribution to a book
et al
Self-Modulation Instability of Electron Beams in Plasma Channels of Variable Length
10th International Particle Accelerator Conference, IPAC’19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 Geneva, Switzerland : JACoW Publishing 3616-3618 () [10.18429/JACOW-IPAC2019-THPGW017]  GO
The self-modulation instability (SMI) of long (in respect to the plasma wavelength) charged particle beams passing through plasma enables the use of currently existing high energy charged particle beams as drivers for plasma wakefield accelerators. At the Photo Injector Test facility at DESY in Zeuthen (PITZ) the SMI of electron beams is studied *, **. [...]
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2019-06-12
15:51
OpenAccess [PUBDB-2019-02466] Talk (non-conference)

Experimental Studies of RF Gun Coupler - Frequency detuning dependent transient coupler effects
PITZ Collaboration meeting May 2019, DESYZeuthen, DESY, Germany, 14 May 2019 - 15 May 20192019-05-142019-05-15  GO
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2019-05-16
16:20
OpenAccess [PUBDB-2019-02299] Journal Article/Report

Accelerator Beam Dynamics at the European X-Ray Free Electron Laser
[DESY-18-178]
We consider the collective beam dynamics in the accelerator of the European X-ray Free Electron Laser for electron bunches with charges of 250 and 500 pC. The dynamics has been studied numerically with different computer programs, and we struggle to include properly the whole beam physics with collective effects. [...]
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2019-04-08
14:56
OpenAccess [PUBDB-2019-01904] Conference Presentation

Summary of the Maximum SCRF Voltage in XFEL
Tesla Technology Collaboration Meeting 2019, TTC Meeting, VancouverVancouver, Canada, 5 Feb 2019 - 8 Feb 20192019-02-052019-02-08  GO
In this presentation, we will provide an overview of the maximum obtained voltage performance of each RF station in the XFEL, quantifying the observed differences and limitations as compared to the expected performance based on single module tests at AMTF. We will also briefly discuss operations experience affecting maximum voltage and future study directions..
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2019-04-07
12:23
OpenAccess [PUBDB-2019-01879] Conference Presentation (Invited)

Lattice Design, Commissioning and Operation Challenges for PETRA IV
ARIES Workshop "Beam Tests and Commissioning of Low Emittance Storage Rings", KarlsruheKarlsruhe, Germany, 18 Feb 2019 - 20 Feb 20192019-02-182019-02-20  GO
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2019-03-26
11:22
OpenAccess [PUBDB-2019-01711] Preprint/Report

Wigner Rotation: Theory and Application to Practical Relativistic Engineering Problems
[DESY-19-047; arXiv:1903.07452]
 GO
The standard expression for the Wigner rotation leads to incorrect result for the wavefront rotation. The results for the Wigner rotation in the Lorentz lab frame obtained by many experts on special relativity such as Moeller and Jackson, are incorrect. [...]
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2019-01-30
11:09
Embargoed OpenAccess [PUBDB-2019-00864] Journal Article/Contribution to a conference proceedings/Contribution to a book
et al
FAST-XPD: XFEL Photon Pulses Database for Modeling XFEL Experiments
13th International Conference on Synchrotron Radiation Instrumentation, SRI2018, TaipeiTaipei, Taiwan, 10 Jun 2018 - 15 Jun 20182018-06-102018-06-15 AIP conference proceedings 2054(1), 030019 () [10.1063/1.5084582]  GO
Knowledge of different properties of the radiation from X-ray FEL is very important for planning experiments. An understanding of such properties can come from start-to-end simulations of experiments: modern FEL simulation allows to reliably predict the output radiation pulses from X-ray FEL. [...]
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2019-01-28
16:59
OpenAccess [PUBDB-2019-00837] Journal Article

Wilson Prize article: Reflections on Our Experiences with Developing the Theory of Intrabeam Scattering
We discuss our experiences with developing detailed theoretical descriptions of intrabeam scattering in particle accelerators. We focus on the historical importance of understanding intrabeam scattering for the successful operation of a variety of accelerators around the world. [...]
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2019-01-10
15:28
[PUBDB-2019-00329] Journal Article
et al
Optimization of Cathodic Arc Deposition and Pulsed Plasma Melting Techniques for Growing Smooth Superconducting Pb Photoemissive Films for SRF Injectors
Superconducting photoinjectors have a potential to be the optimal solution for moderate and high current cw operating free electron lasers. For this application, a superconducting lead (Pb) cathode has been proposed to simplify the cathode integration into a 1.3 GHz, TESLA-type, 1.6-cell long purely superconducting gun cavity. [...]
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