A5057931529- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Scientific Research and Discoveries
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Mechanical and Optical Resonators
- Magnetic properties of thin films
- Quantum, superfluid, helium dynamics
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Computational Physics and Python Applications
- Quantum and electron transport phenomena
- International Science and Diplomacy
- Advanced Data Storage Technologies
- Physics of Superconductivity and Magnetism
- Magnetic confinement fusion research
- Advanced NMR Techniques and Applications
Forschungszentrum Jülich
2021-2024
RWTH Aachen University
2017-2024
Based on the notion that local dark-matter field of axions or axionlike particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, perform first proof-of-principle experiment at Cooler Synchrotron (COSY) scan momenta near...
This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...
The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Moment (EDM) protons and deuterons using storage ring. is based on polarization measurement. In order to reach highest accuracy, one has know exact trajectory through magnets, especially quadrupoles, avoid influence magnetic fields vector. this paper, development beam-based alignment technique described that was developed implemented COoler SYnchrotron (COSY) Forschungszentrum Jülich....
We investigated coherent betatron oscillations of a deuteron beam in the storage ring cooler synchrotron and ring, excited by detuned rf Wien filter (WF). The were detected conventional position monitors. With currently available apparatus, we show that oscillation amplitudes down to $1\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$ can be detected. interpretation response stored WF is based on simulations evolution lattice realistic time-dependent 3D field maps WF. Future measurements electric...
High-frequency driven resonant spin rotators are routinely used as standard instruments in polarization experiments particle and nuclear physics. Maintaining the continuous exact parametric resonance condition of equality rotator precession frequency during operation is one challenges. We present a detailed analytical description effects detuning on precessing vertical in-plane components polarization. An important part formalism presented here consideration experimentally relevant...
Based on the notion that local dark-matter field of axions or axion-like particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, performed first proof-of-principle experiment at Cooler Synchrotron COSY scan momenta near...
The matter-antimatter asymmetry cannot be explained by the Standard Model (SM) of elementary particle physics. According to A. Sakharov, additional sources $\mathcal{CP}$-Violating phenomena are needed understand asymmetry. Electric Dipole Moments (EDMs) subatomic particles may provide $\mathcal{CP}$ violation, since they violate $\mathcal{T}$ (and $\mathcal{P}$) symmetry. Polarized beams in storage rings offer possibility measure EDMs charged observing influence EDM on spin motion. Cooler...
Radiofrequency-driven resonant spin rotators are routinely used as standard instruments in polarization experiments particle and nuclear physics. Maintaining the continuous exact parametric spin-resonance condition of equality rotator precession frequency during operation constitutes one challenges. We present a detailed analytic description impact detuning resonance on vertical in-plane precessing components polarization. An important part formalism presented here is consideration...
In polarization experiments at storage rings, one of the challenges is to maintain spin-resonance condition a radio-frequency spin rotator with spin-precessions orbiting particles. Time-dependent variations magnetic fields ring elements lead unwanted precession frequency. We report here on solution this problem by shielding (or masking) bunches stored in from high-frequency rotator, so that masked pilot bunch acts as co-magnetometer for other signal bunch, tracking fluctuations time scale...
We present experimental investigation of cross sections for processes crucial in view prompt-gamma imaging.The rays were produced from an interaction a proton beam with different phantom materials composed carbon, oxygen and hydrogen.The used target setup allowed precise selection the investigated depth phantom.We studied details dependence yields on energy, detection angle elemental composition irradiated phantom.The analysis was focused discrete transitions largest sections: 4.44 MeV 12 C...