A5090293399- Particle Accelerators and Free-Electron Lasers
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Physics Studies
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Magnetic confinement fusion research
- X-ray Spectroscopy and Fluorescence Analysis
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Pulsed Power Technology Applications
- Nuclear reactor physics and engineering
- Advanced Data Storage Technologies
- Geophysical and Geoelectrical Methods
- Magnetic properties of thin films
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- Scientific Computing and Data Management
- Medical Imaging Techniques and Applications
- Electromagnetic Simulation and Numerical Methods
- Green IT and Sustainability
- Antenna Design and Analysis
Forschungszentrum Jülich
2016-2024
Technische Universität Berlin
2017
Fraunhofer Institute for Reliability and Microintegration
2013
Justus-Liebig-Universität Gießen
1999-2003
The 2s(1/2)-2p(1/2) energy splittings DeltaE(L) of the lithiumlike ions 19779Au76+, 20882Pb79+, and 23892U89+ have been measured at Experimental Storage Ring, utilizing low dielectronic recombination. resonance energies in total 41 different 1s(2) 2p(1/2)nl(j(')) (n > or =20) autoionizing Rydberg states populated capture process determined. 2s(1/2)-->2p(1/2) excitation obtained by extrapolation these to associated series limits n--> infinity. combined analysis experimental data for all three...
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.
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 proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities could approach 10$^{-29}$ e$\cdot$cm. challenge will be reduce systematic errors similar levels. adjusted preserve polarisation, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarisation from...
Electron-ion recombination of completely stripped ${\mathrm{Bi}}^{83+}$ has been investigated at the Experimental Storage Ring (ESR) GSI in Darmstadt. Absolute recombination-rate coefficients have measured for relative energies between ions and electrons from 0 up to about 125 eV. In energy range 15 meV eV, experimental result is well described by theory radiative (RR). However, below rate increasingly exceeds RR calculation a factor 5.2. This puzzling enhancement phenomenon, which already...
In this paper, the on-body propagation performance measured totally wirelessly with 4-mm-thick and 50×50 mm size textile monopole antennas is presented. At a relatively low operating frequency 867 MHz, small size, gain mean channel values from - 47 to 56 dB including antenna performances were recorded in various scenarios. The majority of links could be well described Nakagami distribution.
Recombination of ${\mathrm{Bi}}^{80+}$ ions with electrons at low relative energies has been investigated employing the electron cooler experimental storage ring Gesellschaft f\"ur Schwerionenforschung in Darmstadt. Absolute recombination rate coefficients have determined for ${E}_{\mathrm{rel}}$ between $1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and 10 eV. Simulations cooling-force effects were carried out to assure validity these energies. In range meV...
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be reduce systematic errors similar levels. adjusted preserve polarization, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarization ($\vec...
Abstract. Some remote sensing applications are relatively time insensitive, for others, near-real-time processing (results 30-180 minutes after data reception) offer a viable solution. There are, however, few applications, such as active wildfire monitoring or ship and airplane detection, where real-time image interpretation offers distinct advantage. The objective of is to provide notifications before the complete satellite pass has been received. This paper presents an automated system...
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...
Advances in microsystem technology have led to an increasing trend of cyber physical system integration into industrial environments for prognostic health monitoring. Harsh environmental conditions require wireless sensor nodes (WSNs) that are robustness and reliable whilst meeting the requirements miniaturization, functional integrity energy efficiency at same time. Moreover design application WSNs need meet target optimized trade-off between direct impacts associated with life cycle...
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 European Spallation Source (ESS) consists of a partly superconducting linac which will deliver 2 GeV, 5 MW proton beam to rotating tungsten target. In this way, the ESS be world’s most powerful neutron source. To measure beams transverse profile at high intensity, is developing two types non-invasive devices. first monitor based on luminescence residual gas, second one ionization same gas. latest developments these monitors presented.
Dielectronic recombination and radiative have been studied for several lithium-like ions (Au76+, Pb79+, Bi80+ U89+) as well hydrogen-like Bi82+ completely stripped Bi83+. Experiments were performed at the electron cooler of storage ring ESR Gesellschaft für Schwerionenforschung (GSI) in Darmstadt. In dielectronic spectra analyzed so far ions, 2s1/2 → 2p1/2 excitations with capture free into Rydberg states n ≥ 20 2p3/2 = 5 (uranium) 6 (gold, lead, bismuth) are observed. These measurements...