A5010136747- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Integrated Circuits and Semiconductor Failure Analysis
- Particle Accelerators and Free-Electron Lasers
- Calibration and Measurement Techniques
- Astronomical Observations and Instrumentation
- Silicon and Solar Cell Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Optical Systems and Laser Technology
- Force Microscopy Techniques and Applications
- Surface Roughness and Optical Measurements
- Radiation Effects in Electronics
- DNA and Biological Computing
- Cellular Automata and Applications
- International Science and Diplomacy
- Theoretical and Computational Physics
- Advanced Measurement and Metrology Techniques
- Electron and X-Ray Spectroscopy Techniques
- Computational Physics and Python Applications
- Mechanical and Optical Resonators
Universität Hamburg
2014-2023
Deutsches Elektronen-Synchrotron DESY
2014-2022
University of Aveiro
2017-2021
European Organization for Nuclear Research
2016-2021
University of Bonn
2021
The International Linear Collider (ILC) is a proposed [Formula: see text] collider, focused on precision measurement of the Standard Model and new physics beyond. Polarized beams are key element ILC program. studies accompanied by an extensive R&D program for creation polarized their polarization. This contribution will review advantages using beam polarization its technical aspects realization, such as
Polarised electron and positron beams are key ingredients to the physics programme of future linear colliders. Due chiral nature weak interactions in Standard Model - possibly beyond knowledge luminosity-weighted average beam polarisation at $e^+e^-$ interaction point is similar importance as luminosity has be controlled permille-level precision order fully exploit potential. The current concept reach this challenging goal combines measurements from Laser-Compton polarimeters before after...
Polarimetry with permille-level precision is essential for future electron-positron linear colliders. Compton polarimeters can reach negligible statistical uncertainties within seconds of measurement time. The dominating systematic originate from the response and alignment detector which records scattered electrons. robust baseline technology foreseen at colliders based on an array gas Cherenkov detectors read out by photomultipliers. In this paper, we will present a calibration method...
A time projection chamber (TPC) with micropattern gaseous detector (MPGD) readout is investigated as main tracking device of the International Large Detector (ILD) concept at planned Linear Collider (ILC). prototype TPC equipped a triple gas electron multiplier (GEM) has been built and operated in an test beam. The was placed 1 T solenoidal field DESY II Test Beam Facility, which provides beam up to 6 GeV/c. performance modules, particular spatial point resolution, determined compared...
For the International Large Detector concept at planned Linear Collider, use of time projection chambers (TPC) with micro-pattern gas detector readout as main tracking is investigated. In this paper, results from a prototype TPC, placed in 1 T solenoidal field and read out three independent GEM-based modules, are reported. The TPC was exposed to 6 GeV electron beam DESY II synchrotron. efficiency for reconstructing hits, measurement drift velocity, space point resolution control...
Precision polarimetry is essential for future e+ e- colliders and requires Compton polarimeters designed negligible statistical uncertainties. In this paper, we discuss the design construction of a quartz Cherenkov detector such polarimeters. The concept has been developed with regard to main systematic uncertainties polarisation measurements, namely linearity response alignment. Simulation studies presented here imply that light yield reachable by using as medium allows resolve in photon...
Beam tests using tracking telescopes are a standard method for determining the spatial resolution of detectors. This requires precise knowledge position beam tracks reconstructed at Device Under Test (DUT). A is proposed which achieves this segmented silicon detector with readout charge digitization. It found that DUT particles normal incidence less than 1 $\mu$m events where clusters consist two pixels (or strips). Given accuracy, residual track-position and in provides distribution. The...
The transmission of silicon crystals irradiated by 24 GeV/c protons and reactor neutrons has been measured for photon energies, $E{\gamma}$, between 0.95 1.3 eV. From the data absorption coefficient ${\alpha}$ is calculated, from ${\alpha}(E_{\gamma})$ fluence dependence band-gap energy, $E_{gap}$, energy transverse optical phonons, $E_{ph}$, determined. It found that within experimental uncertainties about 1 meV neither $E_{gap}$ nor $E_{ph}$ depend on up to maximum $1 \times 10^{17}$...
Pieces of $n$-type silicon with 3.5 k$Ω\cdot $cm resistivity have been irradiated by reactor neutrons to fluences (1, 5 and 10) $\times 10^{16}$ cm$^{-2}$. Using light-transmission measurements, the absorption coefficients determined for photon energies, $E_γ$, between 0.62 1.30 eV samples as after 15 min isochronal annealing temperatures 80°C 330°C. The radiation-induced coefficient, $α_\mathit{irr}$, has obtained subtracting coefficient non-irradiated silicon. $E_γ$-dependence...