Max Kellermeier
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View article: Experimental demonstration of a tomographic five-dimensional phase-space reconstruction
Experimental demonstration of a tomographic five-dimensional phase-space reconstruction Open
Detailed knowledge of particle-beam properties is of great importance to understand and push the performance of existing and next-generation particle accelerators. We recently proposed a phase-space tomography method to reconstruct the fiv…
View article: Experimental demonstration of a tomographic 5D phase-space reconstruction
Experimental demonstration of a tomographic 5D phase-space reconstruction Open
Detailed knowledge of particle-beam properties is of great importance to understand and push the performance of existing and next-generation particle accelerators. We recently proposed a new phase-space tomography method to reconstruct the…
View article: Spectrally shaped THz pulses from tapered dielectric waveguides
Spectrally shaped THz pulses from tapered dielectric waveguides Open
In order to exploit the complete scientific potential of user-oriented accelerator facilities, it is necessary to provide adequate pump sources to enable pump-probe science. The users of the European XFEL have requested a THz pump source m…
View article: electronCT - an imaging technique using very-high energy electrons
electronCT - an imaging technique using very-high energy electrons Open
The electronCT technique is an imaging method based on the multiple Coulomb scattering of relativistic electrons and has potential applications in medical and industrial imaging. It utilizes a pencil beam of electrons in the very high ener…
View article: Spectrally shaped THz pulses from tapered dielectric waveguides
Spectrally shaped THz pulses from tapered dielectric waveguides Open
In order to exploit the complete scientific potential of user-oriented accelerator facilities, it is necessary to provide adequate pump sources to enable pump-probe science. The users of the European XFEL have requested a THz pump source m…
View article: electronCT -- An Imaging Technique Using Very-high Energy Electrons
electronCT -- An Imaging Technique Using Very-high Energy Electrons Open
The electronCT technique is an imaging method based on the multiple Coulomb scattering of relativistic electrons and has potential applications in medical and industrial imaging. It utilizes a pencil beam of electrons in the very high ener…
View article: Characterization of relativistic electron bunch duration and traveling wave structure phase velocity based on momentum spectra measurements
Characterization of relativistic electron bunch duration and traveling wave structure phase velocity based on momentum spectra measurements Open
The Accelerator Research Experiment at Sinbad (ARES) linac at DESY aims to generate and characterize ultrashort electron bunches (fs to sub-fs duration) with high momentum and arrival time stability for the purpose of applications related …
View article: Beam based alignment of focusing solenoids at ARES
Beam based alignment of focusing solenoids at ARES Open
ARES is an electron linear accelerator at the SINBAD facility at DESY. It aims to deliver reliable high-brightness beams with an energy in the range of 50 MeV to 150 MeV with fs to sub-fs bunch lengths. This is ideal for injection into nov…
View article: TWAC : EIC Pathfinder Open European project on Novel dielectric acceleration
TWAC : EIC Pathfinder Open European project on Novel dielectric acceleration Open
Particle accelerators are devices of primary importance in a large range of applications such as fundamental particle physics, nuclear physics, light sources, imaging, neutron sources, and transmutation of nuclear waste. They are also used…
View article: Characterization of relativistic electron bunch duration and travelling wave structure phase velocity based on momentum spectra measurements on the ARES linac at DESY
Characterization of relativistic electron bunch duration and travelling wave structure phase velocity based on momentum spectra measurements on the ARES linac at DESY Open
The ARES linac at DESY aims to generate and characterize ultrashort electron bunches (fs to sub-fs duration) with high momentum and arrival time stability for the purpose of applications related to accelerator R&D, e.g. development of adva…
View article: Selective phase filtering of charged beams with laser-driven antiresonant hollow-core fibers
Selective phase filtering of charged beams with laser-driven antiresonant hollow-core fibers Open
Emerging accelerator concepts increasingly rely on the combination of high-frequency electromagnetic radiation with electron beams, enabling longitudinal phase space manipulation which supports a variety of advanced applications. The hands…
View article: Self-calibration technique for characterization of integrated THz waveguides
Self-calibration technique for characterization of integrated THz waveguides Open
Emerging high-frequency accelerator technology in the terahertz regime is promising for the development of compact high-brightness accelerators and high resolution–power beam diagnostics. One resounding challenge when scaling to higher fre…
View article: Commissioning Results and Electron Beam Characterization with the S-Band Photoinjector at SINBAD-ARES
Commissioning Results and Electron Beam Characterization with the S-Band Photoinjector at SINBAD-ARES Open
Over the years, the generation and acceleration of ultra-short, high quality electron beams has attracted more and more interest in accelerator science. Electron bunches with these properties are necessary to operate and test novel diagnos…
View article: Compact Terahertz-Powered Electron Photo-Gun
Compact Terahertz-Powered Electron Photo-Gun Open
Novel accelerator concepts such as all-optical THz based compact accelerators promise to enable new science due to unique features such as reduced timing-jitter and improved space-charge broadening of the generated electron bunches. Howeve…
View article: Status of the Dedicated Electron Diagnostic Beamline at AXSIS
Status of the Dedicated Electron Diagnostic Beamline at AXSIS Open
AXSIS (Attosecond X-ray Science: Imaging and Spectroscopy) is a compact, accelerator-driven X-ray source currently under construction at DESY Hamburg. It comprises a THz-powered electron gun and THz-driven linac for all-optical electron ex…
View article: Commissioning Results and Electron Beam Characterization at the S-band Photoinjector at SINBAD-ARES
Commissioning Results and Electron Beam Characterization at the S-band Photoinjector at SINBAD-ARES Open
Over the last years, the generation and acceleration of ultra-short, high quality electron beams has attracted more and more interest in accelerator science. Electron bunches with these properties are necessary to operate and test novel di…
View article: SINBAD-ARES - A Photo-Injector for external Injection Experiments in novel Accelerators at DESY
SINBAD-ARES - A Photo-Injector for external Injection Experiments in novel Accelerators at DESY Open
The accelerator R&D facility SINBAD (Short Innovative Bunches and Accelerators at DESY) will drive multiple independent experiments in the fields of production of ultra-short electron bunches and tests of advanced high gradient acceleratio…
View article: Towards additive manufacturing of dielectric accelerating structures
Towards additive manufacturing of dielectric accelerating structures Open
Additive manufacturing techniques such as stereolithography have developed rapidly in the last decade and provide the ability to simplify prototyping and manufacturing of unique, complex structures. For the application to dielectric accele…
View article: Tolerance Studies and Limitations for Photonic Bandgap Fiber Accelerators
Tolerance Studies and Limitations for Photonic Bandgap Fiber Accelerators Open
Laser-driven hollow core photonic bandgap (PBG) fibers were proposed by Lin in 2001 as high-gradient accelerators. The central defect in the transversely periodic lattice supports an accelerating mode for synchronous acceleration in the ul…
View article: Quasiparticle tunneling in the lowest Landau level
Quasiparticle tunneling in the lowest Landau level Open
We measure quasiparticle tunneling across a constriction in the first Landau level. In the limit of weak backscattering, the dependence of the tunneling conductance on temperature and dc-bias is in qualitative disagreement with existing th…