A5055290893- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Physics and Engineering Research Articles
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Semiconductor Quantum Structures and Devices
- Spectroscopy and Quantum Chemical Studies
- Engineering and Materials Science Studies
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Quantum and electron transport phenomena
FH Aachen
2002-2025
RWTH Aachen University
2016-2025
European Organization for Nuclear Research
2001-2024
A. Alikhanyan National Laboratory
2022-2024
University of Antwerp
2023-2024
Vrije Universiteit Brussel
2023-2024
Institute of High Energy Physics
2014-2024
Forschungszentrum Jülich
2015-2023
Institute of Experimental Physics of the Slovak Academy of Sciences
2023
Comenius University Bratislava
2023
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
Abstract New developments in liquid scintillators, high-efficiency, fast photon detectors, and chromatic sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov scintillation signals. Such could reconstruct particle direction species using light while also having excellent energy resolution low threshold of scintillator detector. Situated deep underground, utilizing new techniques computing reconstruction, this achieve unprecedented...
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of magnetic storage ring (COSY). This long spin coherence time is maintained through combination bunching, electron cooling, sextupole field corrections, and suppression collective effects current limits. record required for search an intrinsic electric dipole moment on at statistical sensitivity level approaching 10^{-29} e cm.
The two-band density-matrix dynamics of a semiconductor driven by an intense light field is set up in real-space representation. relation to the corresponding k-space theory established. applied case excitonic resonances quantum well finite width. Solutions describing dynamical Stark effect are studied with particular emphasis on following points: (i) dependence measured signal whether spectral filtering probe beam before or after sample, and (ii) influence short pump pulses, delay between...
Runaway electrons are generated in a magnetized plasma when the parallel electric field exceeds critical value. For such with energies typically reaching tens of MeV, Abraham–Lorentz–Dirac (ALD) radiation force, reaction to synchrotron emission, is significant and can be dominant process limiting electron acceleration. The effect ALD force on runaway dynamics homogeneous investigated using relativistic finite-difference Fokker–Planck codes LUKE (Decker Peysson 2004 Report EUR-CEA-FC-1736,...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
The influence of a phonon bath on the dynamics many-body density matrices relevant for nonlinear optical response semiconductors is studied. It shown that, as in phonon-free case, only finite set electronic needed to describe ${\mathrm{\ensuremath{\chi}}}^{(\mathit{n})}$ experiment. However, obtain closed equations motion level additional truncation concepts have be introduced order decouple infinite hierarchy phonon-assisted matrices. Relations characteristic intrinsic systems, that...
The validity of the semiconductor Bloch equations (SBE) depends on approximate decomposition an intraband correlation function into a product interband transition densities. We analyze consequences this approximation dynamics optically excited semiconductor. As special example where SBE treatment becomes questionable we consider THz emission narrow band superlattice in static bias field. A comparison second order solution with rigorous system helps one identify weak points approach and...
An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which multi-GeV electron beam passed through helical undulator to generate multi-MeV, circularly polarized photons were then converted thin target produce positrons (and electrons) with longitudinal polarization above 80% 6 MeV. The results are agreement Geant4 simulations that include dominant polarization-dependent interactions of electrons, positrons, and matter.Received 8 March...