Accelerator Physics

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2019-11-25
14:53
OpenAccess [GSI-2019-01143] Journal Article
et al
Accurate Taylor transfer maps for large aperture iron dominated magnets used in charged particle separators and spectrometers
For high-resolution separators like the projected Super-FRS at FAIR, an adapted and accurate ion-optical model considering realistic -dependent magnet parameters is crucial in achieving the desired parameters (e.g. resolution) and to enable a fast optimization. [...]
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2019-10-31
10:55
arXiv [GSI-2019-01048] Preprint/Report

Enhancement of space-charge induced damping due to reactive impedances for head-tail modes
[arXiv:1709.01425]
Landau damping of head-tail modes in bunches due to spreads in the tune shift can be a deciding factor for beam stability. We demonstrate that the coherent tune shifts due to reactive impedances can enhance the space-charge induced damping and change the stability thresholds (here, a reactive impedance implies the imaginary part of the impedance of both signs). [...]

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2019-10-25
16:30
[GSI-2019-01041] Contribution to a conference proceedings/Contribution to a book
et al
Intensity Dependent Emittance Transfer Studies at the CERN Proton Synchrotron
EPAC 2004
9th European Particle Accelerator Conference, EPAC, LucerneLucerne, Switzerland, 5 Jul 2004 - 9 Jul 20042004-07-052004-07-09
EPS-AG 1894-1896 p. ()

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2019-10-25
15:50
[GSI-2019-01036] Contribution to a conference proceedings/Contribution to a book
et al
Dynamical Effects of the Montague Resonance
EPAC 2004
9th European Particle Accelerator Conference, EPAC, LucerneLucerne, Switzerland, 5 Jul 2004 - 9 Jul 20042004-07-052004-07-09
EPS-AG 1960-1962 p. ()

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2019-10-15
13:12
[GSI-2019-00984] Contribution to a book
et al
Optimization of Heavy-Ion Synchrotrons Using Nature-Inspired Algorithms and Machine Learning
Proceedings of the 13th International Computational Accelerator Physics Conference Geneva : JACoW SAPAF02 15-21 () [10.18429/JACOW-ICAP2018-SAPAF02]
The application of machine learning and nature-inspired optimization methods, like for example genetic algorithms (GA) and particle swarm optimization (PSO) can be found in various scientific/technical areas. In recent years, those approaches are finding application in accelerator physics to a greater extent. [...]

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2019-02-24
15:50
[GSI-2019-00486] Journal Article

Space charge compensation with pulsed electron lenses for intense ion beams in synchrotrons
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2019-02-24
15:08
[GSI-2019-00466] Journal Article
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Alternating-Phase Focusing for Dielectric-Laser Acceleration
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2019-02-14
10:37
OpenAccess [GSI-2019-00283] Journal Article

Measurements and Simulations of the Spill Quality of Slowly Extracted Beams from the SIS-18 Synchrotron
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2019-01-30
11:23
[GSI-2019-00155] Dissertation / PhD Thesis

Space-charge driven transverse beam instabilities in synchrotrons
137 S. () = Dissertation, Technische Universität Darmstadt, 2018
ntense proton or ion beams in charged-particle accelerators are of fundamental importance for many research areas, which relay on such beams, such as those requiring spallation neutrons or radioactive beams. The main subject of this thesis is the detailed investigation of the intense beam motion and instability in synchrotrons, based on two approaches: particle-in-cell (PIC) simulations and the numerical methods for calculating the beam's envelope motion [...]

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2019-01-30
10:52
[GSI-2019-00153] Dissertation / PhD Thesis

Laser Cooling of Intense Relativistic Ion Beams
112 p. () = Dissertation, Technische Universität Darmstadt, 2017
Doppler laser cooling is a technique to reduce the longitudinal momentum spread of an ion beam in a circular accelerator. In the past, the principle was investigated and verified on non-relativistic ion beams. [...]

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