A5033660089- Nuclear Physics and Applications
- Advancements in Solid Oxide Fuel Cells
- Nuclear reactor physics and engineering
- Advanced Radiotherapy Techniques
- Fuel Cells and Related Materials
- Particle physics theoretical and experimental studies
- Radiation Therapy and Dosimetry
- Medical Imaging Techniques and Applications
- Fusion materials and technologies
- Advanced ceramic materials synthesis
- Advanced X-ray and CT Imaging
- Additive Manufacturing Materials and Processes
- Advanced X-ray Imaging Techniques
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Advanced MRI Techniques and Applications
- Phase Equilibria and Thermodynamics
- Advanced materials and composites
- Geophysical and Geoelectrical Methods
- Magnetic Properties of Alloys
- Superconducting Materials and Applications
- Metallurgical and Alloy Processes
- Chemical Thermodynamics and Molecular Structure
- Mass Spectrometry Techniques and Applications
- Magnetic Bearings and Levitation Dynamics
RWTH Aachen University
2015-2025
Forschungszentrum Jülich
2015-2025
Ernst Ruska Centre
2023
Jülich Aachen Research Alliance
2015-2016
Philips (Germany)
1996
Max Planck Institute for Nuclear Physics
1992
Heidelberg University
1988-1991
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.
Ground penetrating radar (GPR) offers the great potential to non-invasively monitor soil and root conditions in agricultural environments. A novel experiment Jülich aims at analysing interactions between soil, plants atmosphere under controlled laboratory with as realistic possible composition temperature. In order distribution of water nutrition well growth roots flow processes a 3D GPR tomography system spatial resolution up 5 cm temporal about 10 s was designed. The consists 39...
Ground Penetrating Radar (GPR) is a non-invasive soil investigation tool that uses electromagnetic waves to probe the subsurface and determine distribution of electrical permittivity conductivity. Traditional systems use impulse radar, which transmits short duration waveforms. Advances in high frequency electronics, such as sampling rate converters, allow greater flexibility waveform design signal processing. This work focuses on analysing impulse, stepped continuous wave (SFCW) chirp...
For studying the effects of future climate conditions on plant physiological, biogeochemical, hydrological and atmospheric processes in agroecosystems, we developed a large-scale research infrastructure, called AgraSim. AgraSim is an experimental simulator consisting six mesocosms, each them integrated chamber, chamber lysimeter system. The system makes it possible to simulate environmental mesocosms fully controlled manner under different weather ranging from tropical boreal climate....
The study of climate-relevant processes in the atmosphere using airborne platforms is an important contribution to understanding our environment. deployment remote sensing instruments on aircraft or balloons requires powerful computer systems for data acquisition and instrument control. ongoing trend towards further miniaturisation instruments, with increasingly complex measurement tasks higher rates use over longer flight durations, a new generation control processing units. These units...
Individual plants vary in their ability to respond environmental changes. For dynamic responses plants, long-distance carbon (C) transport is required support growth. Therefore, investigating C allocation crucial for developing a mechanistic understanding of plant functioning. However, little known about short-term assimilate patterns and velocities, as literature values from singular invasive measurements are hard interpret highly susceptible system. To study the photo assimilates within we...
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...
Microbeam and x-ray FLASH radiation therapy are innovative concepts that promise reduced normal tissue toxicity in oncology without compromising tumor control. However, currently only large third-generation synchrotrons deliver acceptable beam qualities there is a need for compact, hospital-based sources to facilitate clinical translation of these novel treatment strategies.We setting up the first prototype line-focus tube (LFxT), promising technology may ultra-high dose rates (UHDRs) more...
Abstract A new apparatus for measurements of second virial coefficients gases or gas mixtures at room temperature is described. It was used to determine He, H 2 , N CO NH 3 and the interaction coefficient Ar/NH . Furthermore, low /CO are reported finally a critical revision Ar, 77.3 K presented. The discussed in their relation intermolecular potentials.
Ceramic Membrane Reactors offer an opportunity towards the transition to renewable energies and defossilized economies by efficiently coupling chemical reactions heat utilization. To identify viable processes, mathematical models are needed that allow a straightforward assessment. In this study, generalized model is presented can be applied membrane reactor concepts using mixed oxygen transport membrane. The assumes equilibrium which realized minimizing Gibbs free energy in individual...
To overcome the intrinsic brittleness of tungsten (W), a fiber-reinforced tungsten-composite material (Wf/W) is possible solution. The introduction energy dissipation mechanisms like fiber bridging or pull-out by means an engineered interface between and matrix mitigate lead to pseudo-ductile behaviour. push-out test single-fiber samples experimental method investigate properties composite materials. It widely used for investigation ceramic composites. This was also debonding frictional...
Three new BaO–SrO–SiO 2 –B O 3 (BS) glasses with different SrO contents (6–25 mol%) are developed for oxygen transport membrane (OTM) joining application. The content of strontium is investigated first in terms its effect on the glass‐forming tendency, thermal expansion coefficient, crystallization, shrinkage behavior, and viscous flow properties. Differential scanning calorimetry (DSC) carried out. Dilatometric tests performed to obtain coefficients (CTEs) BS glasses. crystallization...
Abstract Measurements of second interaction virial coefficients mixtures N 2 –O and –2NO are presented. Temperatures range from the boiling temperature gases up to 475 K. New experimental data for pure O NO presented also critically compared with literature data. The amount dimers in gaseous is calculated law corresponding states. Some thermodynamic aspects –NO system discussed.
The European Spallation Source (ESS) is currently in the construction phase and should have first beam on Target 2019. ESS, located Sweden, will be most powerful spallation neutron source worldwide, with goal to produce neutrons for research. As an in-kind partner Forschungszentrum Juelich among others, design manufacture four liquid hydrogen Moderators, which are above below Target. Those vessels confining cold used reduce energy level of fast neutrons, produced by Target, order make usable...
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...
Plasma-facing components (PFC) in nuclear fusion reactors are exposed to demanding conditions during operation. The combination of thermal loads, plasma exposure as well neutron induced damage and activation limits the number materials suitable for this application. Due its properties, tungsten (W) is foreseen plasma-facing material (PFM) future DEMOnstration power plant. It considered due exceptionally high melting point, excellent conductivity, low tritium retention erosion resistance...
Abstract In this study, a new series of 3D printable rubber-elastomeric polymer called PORO-LAY materials have been investigated regarding their suitability to serve as tissue mimicking (TMMs) for MRI phantoms. previously used in biofuel cell developments, particle filtrations and modeling elastic tissues. We evaluated the electrical permittivity, conductivity, spin-lattice T 1 -relaxation time acquired contrast simple multi-material complex printed shapes made at 3.0 T. The results showed...