S. Richter
A5105268832- 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
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- Radio Astronomy Observations and Technology
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Civil and Structural Engineering Research
- Black Holes and Theoretical Physics
- European and International Law Studies
- Corporate Governance and Law
- German Literature and Culture Studies
- Corporate Governance and Management
- Corporate Taxation and Avoidance
- Engineering and Materials Science Studies
- Public Administration and Political Analysis
- Pulsars and Gravitational Waves Research
- Structural Engineering and Materials Analysis
- Cloud Computing and Resource Management
Jagiellonian University
2017-2025
Institute of Physics
2017-2025
Stockholm University
1999-2025
Leipzig University
2016-2024
Deutsches Elektronen-Synchrotron DESY
2019-2024
University of Manchester
2023-2024
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
A. Alikhanyan National Laboratory
2024
University of Geneva
2023-2024
We have remotely mapped optical scattering and absorption in glacial ice at the South Pole for wavelengths between 313 560 nm depths 1100 2350 m. used pulsed continuous light sources embedded with AMANDA neutrino telescope, an array of more than six hundred photomultiplier tubes buried deep ice. At greater 1300 m, both coefficient absorptivity follow vertical variations concentration dust impurities, which are seen cores from other Antarctic sites track climatological changes. The varies by...
Stream processors are emerging in industry as an apparatus that drives analytical but also mission critical services handling the core of persistent application logic. Thus, apart from scalability and low-latency, a rising system need is first-class support for state together with strong consistency guarantees, adaptivity to cluster reconfigurations, software patches partial failures. Although prior systems research has addressed some these specific problems, practical challenge lies on how...
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded high granularity calorimeters. Pairs overlaid pion showers from CALICE 2007 beam are reconstructed by PandoraPFA program developed to implement PFA for future lepton collider. Recovery neutral hadron's energy vicinity charged hadron is studied. impact two overlapping on resolution investigated. dependence confusion error distance between 10 GeV and derived...
The Antarctic muon and neutrino detector array (AMANDA) began collecting data with ten strings in 1997. Results from the first year of operation are presented. Neutrinos coming through Earth Northern Hemisphere identified by secondary muons moving upward array. Cosmic rays atmosphere generate a background downward muons, which about ${10}^{6}$ times more abundant than muons. Over 130 days exposure, we observed total 300 events. In same period, $1.05\ifmmode\times\else\texttimes\fi{}{10}^{9}$...
We present the results of a search for point sources high-energy neutrinos in northern hemisphere using AMANDA-II data collected year 2000. Included are flux limits on several active-galactic-nuclei blazars, microquasars, magnetars, and other candidate neutrino sources. A excesses above random background cosmic-ray-induced atmospheric misreconstructed downgoing cosmic-ray muons reveals no statistically significant show that has achieved sensitivity required to probe known TeV gamma-ray such...
Data from the AMANDA-B10 detector taken during austral winter of 1997 have been searched for a diffuse flux high energy extraterrestrial muon neutrinos. This search yielded no excess events above those expected background atmospheric neutrinos, leading to upper limits on neutrino measured at earth. For an assumed E-2 spectrum, 90% classical confidence level limit has placed E2Phi(E)=8.4 x 10(-7) cm(-2) s(-1) sr(-1) GeV (for predominant range 6-1000 TeV), which is most restrictive bound by...
A series of Ru(II) arene complexes mono- and bidentate N-donor ligands with carboxyl or ester groups chlorido ancillary were synthesised structurally characterised. The have a distorted tetrahedral piano-stool geometry. binding interaction was studied calf thymus DNA (CT-DNA) by absorption titration, viscosity measurement, thermal melting, circular dichroism, ethidium bromide displacement assay cleavage plasmid (pBR322), investigated gel electrophoresis. dichlorido bind covalently to in the...
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For calorimeter, one option a highly granular sampling calorimeter with steel as absorber scintillator layers active material. High granularity obtained by segmenting into small tiles individually read out via silicon photo-multipliers (SiPM). A prototype has been built, consisting thirty-eight sensitive layers, segmented about...
A search for nearly vertical up-going muon-neutrinos from neutralino annihilations in the center of Earth has been performed with AMANDA-B10 neutrino detector. The data collected 130.1 days live time 1997, ∼109 events, have analyzed this search. No excess over expected atmospheric background observed. An upper limit at 90% confidence level obtained on annihilation rate neutralinos Earth, as well corresponding muon flux limit, both a function mass range 100 GeV–5000 GeV.Received 8 February...
A prototype silicon-tungsten electromagnetic calorimeter for an ILC detector was tested in 2007 at the CERN SPS test beam. Data were collected with electron and hadron beams energy range 8 to 80 GeV. The analysis described here focuses on interactions of pions calorimeter. One main objectives CALICE program is validate Monte Carlo tools available design a full-sized detector. Si-W are therefore confronted predictions various physical models implemented GEANT4simulation framework.
This paper describes the search for astronomical sources of high-energy neutrinos using AMANDA-B10 detector, an array 302 photomultiplier tubes used detection Cerenkov light from upward-traveling neutrino-induced muons, buried deep in ice at South Pole. The absolute pointing accuracy and angular resolution were studied by coincident events between AMANDA detector two independent telescopes on surface, GASP air telescope SPASE extensive shower array. Using data collected 1997 April to October...
The results of a search for point sources high energy neutrinos in the northern hemisphere using data collected by AMANDA-II years 2000, 2001, and 2002 are presented. In particular, comparison with single-year result previously published shows that sensitivity was improved factor 2.2. muon neutrino flux upper limits on selected candidate sources, corresponding to an E−2ν spectrum, included. Sky grids were used possible excesses above background cosmic ray induced atmospheric neutrinos. This...