A5067695108- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Research Data Management Practices
- Advanced Frequency and Time Standards
- Particle Accelerators and Free-Electron Lasers
- X-ray Spectroscopy and Fluorescence Analysis
- Agricultural pest management studies
- Mass Spectrometry Techniques and Applications
- Scientific Measurement and Uncertainty Evaluation
- Dark Matter and Cosmic Phenomena
- Electron and X-Ray Spectroscopy Techniques
- Fusion materials and technologies
- Microfluidic and Capillary Electrophoresis Applications
- Radiation Effects in Electronics
European Organization for Nuclear Research
2019-2024
University of Oslo
2022-2023
University of Trento
2022
Jagiellonian University
2012-2020
Institute of Physics
2013-2020
Uppsala University
2017-2020
Northwestern University
2019-2020
University of Silesia in Katowice
2013-2019
Institute of Nuclear Physics, Polish Academy of Sciences
2013-2019
University of Groningen
2019
We report on laser cooling of a large fraction positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced magnetic and electric field-free environment. observe two different laser-induced effects. first effect an increase number atoms after time has spent long-lived 2^{3}P states. second one-dimensional Doppler Ps, reducing cloud's temperature from 380(20) to 170(20) K....
Primary goal of the AEḡIS experiment is to precisely measure free fall antihydrogen within Earth’s gravitational field. To this end, cold (≈50 K) will traverse a two-grid moiré deflectometer before annihilating onto position-sensitive detector, which shall determine vertical position annihilation vertex relative grids with micrometric accuracy. Here, we introduce vertexing detector based on modified mobile camera sensor and experimentally demonstrate that it can antiproton annihilations...
We report on a high-statistics measurement of the most basic double pionic fusion reaction $\vec{n}p \to d\pi^0\pi^0$ over energy region $d^*(2380)$ resonance by use polarized deuteron beam and observing in quasifree scattering mode. The measurements were performed with WASA detector setup at COSY. data reveal substantial analyzing powers confirm conclusions about $d^*$ obtained from unpolarized measurements. also previous under complementary kinematic conditions.
Abstract A powerful and robust control system is a crucial, often neglected, pillar of any modern, complex physics experiment that requires the management multitude different devices their precise time synchronisation. The AEḡIS collaboration presents CIRCUS, novel, autonomous optimised for time-critical experiments such as those at CERN’s Antiproton Decelerator and, more broadly, in atomic quantum research. Its setup based on Sinara/ARTIQ TALOS, integrating ALPACA analysis pipeline, last...
Exclusive measurements of the quasi-free pn→ppπ− and pp→ppπ0 reactions have been performed by means pd collisions at Tp=1.2 GeV using WASA detector setup COSY. Total differential cross sections obtained covering energy region Tp=0.95–1.3GeV (s=2.3–2.46 GeV), which includes regions Δ(1232), ⁎N⁎(1440) ⁎d⁎(2380) resonance excitations. From these isoscalar single-pion production has extracted, for data existed so far only below Tp=1 GeV. We observe a substantial increase this section around 1...
Set of vector analyzing power data the d⃗p elastic scattering and 1H(d⃗,pp)n breakup reactions at 130-MeV deuteron beam energy has been measured in domain very forward polar angles. The results are compared with theoretical predictions originating from various approaches: realistic nucleon-nucleon (NN) potentials NN combined a three-nucleon force (3NF) model based on ChPT framework. In case process, none calculations reveal sensitivity to any dynamical effects such as 3NF or Coulomb...
The WASA-at-COSY experiment has collected $3\ifmmode\times\else\texttimes\fi{}{10}^{7}$ events with $\ensuremath{\eta}$ mesons produced via the reaction $pd\ensuremath{\rightarrow}^{3}\mathrm{He}\phantom{\rule{0.16em}{0ex}}\ensuremath{\eta}$ at $\mathrm{T}=1.0\phantom{\rule{4pt}{0ex}}\mathrm{GeV}$. Using this data set, we evaluate branching ratios of decays $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\gamma}$,...
Using the production reactions $pd\to {}^3\mbox{He}\,\omega$ and $pp\to pp\omega$, Dalitz plot distribution for $\omega \to \pi^+ \pi^- \pi^0$ decay is studied with WASA detector at COSY, based on a combined data sample of $ (4.408\pm 0.042) \times 10^4$ events. The density parametrised by product $P$-wave phase space polynomial expansion in normalised polar variables $Z$ $\phi$. For first time, deviation from pure observed significance $4.1\sigma$. linear term $1+2\alpha Z$, $\alpha$...
We present a Lyman-α laser developed for cooling trapped antihydrogen. The system is based on pulsed Ti:sapphire operating at 729 nm that frequency doubled using an LBO crystal and then tripled in Kr/Ar gas cell. After conversion, this produces up to 5.7 μW of average power the wavelength. This part ATRAP experiment antiproton decelerator CERN.
Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance ⁎d⁎(2380) with I(JP)=0(3+) there should also exist a mirrored quantum numbers I(JP)=3(0+). We report here search for such NN-decoupled state data pp→ppπ+π+π−π− reaction. Since no clear-cut evidence has been found, we give upper limits production cross section of mass range 2280–2500 MeV.
Modern physics experiments are frequently very complex, relying on multiple simultaneous events to happen in order obtain the desired result. The experiment control system plays a central role orchestrating measurement setup: However, its development is often treated as secondary with respect hardware, importance becoming evident only during operational phase. Therefore, AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) collaboration has created framework for easily coding...
Experiments devoted to study subtle ingredients of nuclear dynamics were carried out at KVI in Groningen with the use 1 H(d, pp)n breakup reaction deuteron beam energy 80 MeV/nucleon.The aim work is determine cross sections and confront them set modern calculations which model forces acting between nucleons.Elastic scattering process was also measured for purpose section normalization.This paper presents preliminary results data analysis including geometry check, calibration, particles...
New data on both total and differential cross sections of the production η mesons in proton–deuteron fusion to He3η excess energy region 13.6MeV≤Qη≤80.9MeV are presented. These have been obtained with WASA-at-COSY detector setup located at Forschungszentrum Jülich, using a proton beam 15 different momenta between pp=1.60GeV/c pp=1.74GeV/c. While significant structure section is observed 20MeV≲Qη≲60MeV, previously reported sharp variation around Qη≈50MeV cannot be confirmed. Angular...
We report on the investigation of rare decay $\eta\rightarrow\pi^0+\text{e}^++\text{e}^-$ which is interest to study both $C$ violation in electromagnetic interaction and search for contributions from physics beyond Standard Model, since allowed via a two-photon intermediate state strongly suppressed. The experiment has been performed using WASA-at-COSY installation, located at COSY accelerator Forschungszentrum J\"ulich, Germany. In total $3\times10^7$ events reaction...
A set of differential cross section the three-body $^{2}$H($d$,$dp$)$n$ breakup reaction at 160 MeV deuteron beam energy are presented for 147 kinematically complete configurations near quasi-free scattering kinematics. The experiment was performed KVI in Groningen, Netherlands using BINA detector. cross-section data have been normalized to $^{2}$H($d$,$d$)$^{2}$H elastic section. compared recent single-scattering approximation (SSA) calculations three-cluster deuteron-deuteron collisions....
Experimental study of the deuteron-proton breakup process was perfomed in KVI Groningen. In this paper current status collected data analysis is presented, including preliminary results cross section for sample kinematical configuration.
Differential cross sections for deuteron breakup $^{1}H(d, pp)n$ reaction were measured a large set of 243 geometrical configurations at the beam energy 80 MeV/nucleon. The section data are normalized by luminosity factor obtained on basis simultaneous measurement elastic scattering channel and existing this process. results compared to theoretical calculations modeling nuclear interaction with without taking into account three-nucleon force (3NF) Coulomb interaction. In validated region...
Differential cross sections of $^{2}\mathrm{H}(d,d)^{2}\mathrm{H}$ elastic scattering and proton transfer $^{2}\mathrm{H}(d,^{3}\mathrm{He})n$ reactions at 160 MeV beam energy have been obtained. They normalized relative to the existing cross-section data for 180 130 MeV, benefitting from negligible dependence this observable certain range four-momentum transfer. The experiment was performed KVI in Groningen, Netherlands, using BINA detector. are compared theoretical predictions based on...
Abstract We present a hybrid imaging/timing detector for force sensitive inertial measurements designed on positronium, the metastable bound state of an electron and positron, but also suitable applications involving other low intensity, energy beams neutral (antimatter)-atoms, such as antihydrogen. The performance prototype was evaluated with tunable positron beam, resulting in spatial resolution <?CDATA ${\approx}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The AEgIS experiment located at the Antiproton Decelerator CERN aims to measure gravitational fall of a cold antihydrogen pulsed beam. precise observation antiatoms in Earth field requires controlled production and manipulation antihydrogen. neutral antimatter is obtained via charge exchange reaction between plasma antiprotons from ELENA decelerator pulse Rydberg positronium atoms. current custom electronics designed operate 5 1 T Penning traps are going be replaced by control system based...
A rich set of differential cross section the three-body $$^{2}$$ H(d,dp)n breakup reaction at 160 MeV deuteron beam energy has been measured over a large range available phase space. The experiment was performed KVI in Groningen, Netherlands, using BINA detector. cross-section data for have normalized to simultaneously H(d,d) H elastic scattering section. sections obtained 147 kinematically complete configurations near quasi-free kinematics are compared recent approximate calculations...
High-accuracy spectroscopic comparisons of trapped antihydrogen atoms ($\overline{\text{H}}$) and hydrogen ($\text{H}$) promise to stringently test the fundamental CPT symmetry invariance standard model particle physics. ATRAP's nested Penning-Ioffe trap was developed for such studies. The first its unique features is that magnetic Ioffe $\overline{\text{H}}$ can be switched between quadrupole octupole symmetries. second it allows laser microwave access perpendicular central axis traps.