A5105517419- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Semiconductor materials and devices
- Radiation Effects in Electronics
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Ferroelectric and Piezoelectric Materials
- Photonic and Optical Devices
- advanced mathematical theories
- Semiconductor Lasers and Optical Devices
- Medical Imaging Techniques and Applications
- Acoustic Wave Resonator Technologies
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- X-ray Diffraction in Crystallography
- Advancements in Semiconductor Devices and Circuit Design
- Superconducting Materials and Applications
- Solid-state spectroscopy and crystallography
Folkwang University of the Arts
2016-2025
University of Siegen
2016-2025
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
Northern Illinois University
2021-2024
A. Alikhanyan National Laboratory
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2018-2023
Ludwig-Maximilians-Universität München
2019-2020
Institute of Particle Physics
2017
Associated strangeness production has been studied in the p¯p→Λ¯Λ→p¯π+pπ− reaction at CERN antiproton facility LEAR using experimental setup of PS185. Results from two high-statistics measurements incident momenta 1.642 and 1.918 GeV/c are reported. Approximately 40 000 reconstructed events each momentum have allowed us to measure total differential cross sections, spin polarizations, correlations, singlet fractions ΛΛ¯ pair. Since decays both Λ Λ¯ were simultaneously observed same detector,...
Abstract Structural response of crystals to an applied external perturbation is important as a key for understanding microscopic origin physical properties. Experimental investigation structural great challenge modern structure analysis. We demonstrate how advanced X‐ray diffraction techniques facilitate probing tiny (10 –4 Å) distortions bond lengths under permanent electric field. also discuss details the experimental procedure essential reaching such precision. ask whether experiment can...
The aim of this contribution is to describe our recent development a novel compact field-programmable gatearray (FPGA)-based data acquisition (DAQ) system for use with multichannel X-ray detectors at synchrotron radiation facilities. designed time resolved counting single photons arriving from several-currently 12-independent detector channels simultaneously. Detector signals least 2.8 ns duration are latched by asynchronous logic and then synchronized the clock 100 MHz. incoming...
Time-resolved measurements of the macroscopic and microscopic strains in piezoelectric crystals were performed with a novel data acquisition technique implemented on basis field programmed gate array system. Both types induced crystal by an applied periodic high voltage fast (within 100 ns) switches between opposite polarities measured simultaneously respective angular shifts integrated intensities synchrotron x-ray diffraction rocking curves. The time resolution achieved developed system...
This article presents the design and implementation of a radiation-hardened analog front-end (AFE) integrated circuit (IC) developed for interfacing with solid state ionizing radiation detectors, providing accurate amplitude time-of-arrival measurements. The AFE is designed use in Beam Conditions Monitor Prime (BCM') ATLAS experiment at Large Hadron Collider (LHC). proposed comprised four channels, allowing re-configuration to operate as either low-noise high-gain amplifier beam luminosity...
High piezoelectric activity of many ferroelectrics has been the focus numerous recent studies. The structural origin this remains poorly understood due to a lack appropriate experimental techniques and mixing different mechanisms related ferroelectricity ferroelasticity. Our work reports on study uniaxial ${\mathrm{Sr}}_{0.5}{\mathrm{Ba}}_{0.5}{\mathrm{Nb}}_{2}{\mathrm{O}}_{6}$ ferroelectric where formation regions with spontaneous strains is ruled out by symmetry interrelation between...
This paper investigates the role of university-based industrial extension services in business performance small manufacturing firms an economically declining region United States (Western New York). The outreach initiatives a specific University at Buffalo (UB) programme are described. Particular attention is given to activities UB's Centre for Industrial Effectiveness (CIE), unit with mandate improve product and/or process development efforts local firms. Our data suggest positive returns...
The design and testing of the new MAD-STROBO data acquisition system are reported. realizes stroboscopic collection high-resolution X-ray powder diffraction profiles under a dynamically applied electric field. It synchronizes an externally stimulus detected photons. feasibility detecting sub-millidegree shifts with microsecond time resolution is demonstrated. may be for investigation various macroscopic domain-related processes induced by external perturbation, such as elasticity or piezoelectricity.
This article reports on development of a multichannel arbitrary waveform generator (MAWG), which simultaneously generates voltage waveforms 24 independent channels with dynamic update rate up to 25 Msps. A real-time execution single and/or sequence multiple in succession, user programmable order is provided under the control stand-alone sequencer circuit implemented using an FPGA. The device operated internal clock and can be synced other devices by means TTL pulses. used for output voltages...
Interest in the production of hyperon-antihyperon pairs following antiproton-proton annihilation stems largely from attempts to understand nature flavor production. To date major focus both experimental and theoretical effort has been on p\ifmmode\bar\else\textasciimacron\fi{}p\ensuremath{\rightarrow}\ensuremath{\Lambda}\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\Lambda} reaction. In this paper, we present data complementary channels...
A new data acquisition system for in situ time-resolved three-dimensional reciprocal space mapping is reported. The based on a programmable microcontroller generating functional low-voltage signal, pixel area detector serving as master clock and high-voltage amplifier. Both Bragg diffuse scattering can be mapped large volume of under an alternating electric field pre-programmed shape. has been tested at the Swiss–Norwegian Beamline BM01 European Synchrotron by measuring dependence X-ray from...
850nm oxide-aperture VCSELs are susceptible to premature failure if operated while exposed atmospheric water vapor, and not protected by hermetic packaging. The ATLAS detector in CERN's Large Hadron Collider (LHC) has had approximately 6000 channels of Parallel Optic fielded under well-documented ambient conditions. Exact time-to-failure data been collected on this large sample, providing for the first time actual at use In addition, same were tested a variety accelerated conditions allow us...
Single crystalline magnetite Fe3O4 was investigated at low temperatures in the charge ordered state by electric measurements and time-resolved diffraction with voltage applied in-situ. Dielectric spectroscopy indicates relaxor ferroelectric characteristics, polarization switching observably only sufficiently a suitably chosen time-window. PUND ms time scale indicate switchable of about 0.6 µC/cm2. Significant occurs above threshold field 3 kV/mm, it delay 20 µs. The experiment yields, for...
A first level trigger system based on a 40 MHz digital pipeline has been developed for the CERN NA48 experiment, aiming at measuring CP violation in K/sup 0//spl rarr/2/spl pi/ decays. The outputs of 13340 cells 10 m/sup 3/ liquid krypton calorimeter are summed into 64 X and Y projection strips continuously digitised with FADCs. This information is used to reconstruct each clock cycle two projections, number clusters, impact time them (with precision about 3 ns), their total energy second...
An optical transceiver prototype for the future ATLAS pixel inner-b-layer (IBL) project housing a GaAs PiN-diode array coupled to BPM-signal decoding ASIC, was exposed 24 GeV/c proton beam. The 40 MHz clock and Mbit/s data supplied optically board were restored directly on transmitted back counting room on-line checking of consistency. In case bit error or missing state transition, indicating an occurrence SEU, sequence time aligned bits along with corresponding states recorded off-line...
Changes in the polarization state of ferroelectric materials are mediated through motion planar defects such as domain walls. The interplay between two processes that enable inversion macroscopic materials, non-180° (domain reorientation) and 180° reversal), is not well understood. In this work, time-resolved x-ray diffraction was carried out during application an external electric field to investigate dynamic electric-field response mechanisms BaTiO3 (BT) BiZn1/2Ti1/2O3(BZT)-modified BT...
We present an R&D program to develop ASIC that contains a 12-channel VCSEL (Vertical Cavity Surface Emitting Laser) array driver operating at 10 Gb/s per channel, yielding aggregated bandwidth of 120 Gb/s. The design the is based on prototype for driving 5 will briefly describe was fabricated in 130 nm CMOS process. Two ASICs were irradiated with 800 MeV protons dose 0.92×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> 1-MeV n <sub...