79 citations · 306 across the 24 of their papers we have counts for
24 papers
Simulation of trapped non-neutral plasma dynamics with rotating wall compression
Luisa Riik, Oliver Boine-Frankenheim
A spectral macroparticle simulation scheme is used to model non-neutral plasma dynamics in a Penning-Malmberg trap. This grid-free numerical scheme is well adapted to the specific…
Simulation of longitudinal Landau damping in bunches with space charge
Oliver Boine-Frankenheim, Thilo Egenolf
For a single hadron bunch affected by longitudinal space charge in a stationary rf bucket we analyze the frequency spectrum close to the expected loss of Landau damping for the low…
Beam-based Identification of Magnetic Field Errors in a Synchrotron using Deep Lie Map Networks
Conrad Caliari, Adrian Oeftiger, Oliver Boine-Frankenheim
We present the first experimental validation of the Deep Lie Map Network (DLMN) approach for recovering both linear and non-linear optics in a synchrotron. The DLMN facilitates the…
Pulsed Electron Lenses for Space Charge Mitigation
Adrian Oeftiger, Oliver Boine-Frankenheim
To produce the intense, high-quality hadron beams required by future nuclear and high-energy physics experiments, synchrotrons need to overcome a most prominent intensity limitatio…
Modeling of a Liquid Leaf Target TNSA Experiment using Particle-In-Cell Simulations and Deep Learning
Benedikt Schmitz, Daniel Kreuter, Oliver Boine-Frankenheim
Liquid leaf targets show promise as high repetition rate targets for laser-based ion acceleration using the Target Normal Sheath Acceleration (TNSA) mechanism and are currently und…
Identification of Magnetic Field Errors in Synchrotrons based on Deep Lie Map Networks
Conrad Caliari, Adrian Oeftiger, Oliver Boine-Frankenheim
Magnetic field errors pose a limitation in the performance of synchrotrons, as they excite non-systematic resonances, reduce dynamic aperture and may result in beam loss. Their eff…
Characterization and minimization of the half-integer stop band with space charge in a hadron synchrotron
Dmitrii Rabusov, Adrian Oeftiger, Oliver Boine-Frankenheim
In any hadron synchrotron, the half-integer resonance is among the strongest effects limiting the achievable maximum beam intensity. The heavy-ion superconducting synchrotron SIS10…
Landau damping of transverse head-tail instabilities with a pulsed electron lens in hadron synchrotrons
Vadim Gubaidulin, Vladimir Kornilov, Oliver Boine-Frankenheim +1
A pulsed electron lens produces a betatron tune shift along a hadron bunch as a function of the longitudinal coordinates, which is a longitudinal detuning. An example of transverse…
Simulation Study of the Space Charge Limit in Heavy-ion Synchrotrons
Adrian Oeftiger, Oliver Boine-Frankenheim, Vera Chetvertkova +3
The SIS100 synchrotron as a part of the new FAIR accelerator facility at GSI should be operated at the "space charge limit" for light and heavy ion beams. Beam losses due to space…
MESA Technical Note: Beam Breakup Instability Threshold Current
S. Glukhov, O. Boine-Frankenheim, C. Stoll +1
MESA (Mainz Energy recovery Superconducting Accelerator) is an energy recovery linac (ERL) which is under construction at Johannes Gutenberg University in Mainz. It will be operate…
Threedimensional Alternating-Phase Focusing for Dielectric-Laser Electron Accelerators
Uwe Niedermayer, Thilo Egenolf, Oliver Boine-Frankenheim
The concept of dielectric-laser acceleration (DLA) provides the highest gradients among breakdown-limited (nonplasma) particle accelerators and thus the potential of miniaturizatio…
Tracking with wakefields in dielectric laser acceleration grating structures
Thilo Egenolf, Uwe Niedermayer, Oliver Boine-Frankenheim
Due to the tiny apertures of dielectric laser acceleration grating structures within the range of the optical wavelength, wakefields limit the bunch charge for relativistic electro…
Accurate Taylor transfer maps for large aperture iron dominated magnets used in charged particle separators and spectrometers
E. Kazantseva, O. Boine-Frankenheim, H. Weick +2
For high-resolution separators like the projected Super-FRS at FAIR, an adapted and accurate ion-optical model considering realistic B-dependent magnet parameters is crucial in ach…
Alternating Phase Focusing for Dielectric Laser Acceleration
Uwe Niedermayer, Thilo Egenolf, Oliver Boine-Frankenheim +1
The concept of Dielectric Laser Acceleration (DLA) provides highest gradients among non-plasma particle accelerators. However, stable beam transport and staging have not been shown…
Silicon dual pillar structure with a distributed Bragg reflector for dielectric laser accelerators: Design and fabrication
Peyman Yousefi, Joshua McNeur, Martin Kozák +5
Dielectric laser accelerators (DLAs) have proven to be good candidates for miniaturized particle accelerators. They rely on micro-fabricated dielectrics which are able to modulate…
Cooling rates and intensity limitations for laser-cooled ions at relativistic energies
Lewin Eidam, Oliver Boine-Frankenheim, Danyal Winters
The ability of laser cooling for relativistic ion beams is investigated. For this purpose, the excitation of relativistic ions with a continuous wave and a pulsed laser is analyzed…
Enhancement of space-charge induced damping due to reactive impedances for head-tail modes
Vladimir Kornilov, Oliver Boine-Frankenheim
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 react…
Beam Dynamics Analysis of Dielectric Laser Acceleration using a Fast 6D Tracking Scheme
Uwe Niedermayer, Thilo Egenolf, Oliver Boine-Frankenheim
A six-dimensional symplectic tracking approach exploiting the periodicity properties of Dielectric Laser Acceleration (DLA) gratings is presented. The longitudinal kick is obtained…
Space charge compensation for intense ions beams in booster synchrotrons
Oliver Boine-Frankenheim, William D. Stem
For booster synchrotrons, like the SIS at GSI, space charge is one of the main intensity limitations. At injection energy the space charge induced tune spreads in booster synchrotr…
Grid induced noise and entropy growth in 3d particle-in-cell simulation of high intensity beams
Ingo Hofmann, Oliver Boine-Frankenheim
The numerical noise inherent to particle-in-cell simulation of 3D high intensity bunched beams is studied with the TRACEWIN code and compared with an analytical model by Struckmeie…
Analytic Modeling, Simulation and Interpretation of Broadband Beam Coupling Impedance Bench Measurements
Uwe Niedermayer, Lewin Eidam, Oliver Boine-Frankenheim
In the first part of the paper a generalized theoretical approach towards beam coupling impedances and stretched-wire measurements is introduced. Applied to a circular symmetric se…
Multi-turn injection into a heavy-ion synchrotron in the presence of space charge
Sabrina Appel, Oliver Boine-Frankenheim
For heavy-ion synchrotrons an efficient Multi-Turn Injection (MTI) from the injector linac is crucial in order to reach the specified currents using the available machine acceptanc…
Interpretation of transverse tune spectra in a heavy-ion synchrotron at high intensities
R. Singh, O. Boine-Frankenheim, O. Chorniy +6
Two different tune measurement systems have been installed in the GSI heavy-ion synchrotron SIS-18. Tune spectra are obtained with high accuracy using these fast and sensitive syst…
Beam Performance and Luminosity Limitations in the High-Energy Storage Ring (HESR)
A. Lehrach, O. Boine-Frankenheim, F. Hinterberger +2
The High-Energy Storage Ring (HESR) of the future International Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt is planned as an antiproton synchrotron and stor…