Christoph Wiesinger
A5017172522- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Law and Political Science
- Nuclear physics research studies
- Corporate Governance and Law
- Religion, Theology, and Education
- Corporate Governance and Management
- Digitalization, Law, and Regulation
- Medical and Health Sciences Research
- Diverse Legal and Medical Studies
- Quantum Chromodynamics and Particle Interactions
- Medical Practices and Rehabilitation
- Radiation Detection and Scintillator Technologies
- COVID-19 Digital Contact Tracing
- Criminal Law and Policy
- Muon and positron interactions and applications
- Engineering and Materials Science Studies
- COVID-19 epidemiological studies
- European and International Contract Law
- Superconducting Materials and Applications
- Vacuum and Plasma Arcs
- Public Administration and Political Analysis
Technical University of Munich
2017-2025
Max Planck Institute for Physics
2016-2025
Max Planck Institute for Nuclear Physics
2025
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2024
Politecnico di Milano
2024
University of Milano-Bicocca
2024
Halbleiterlabor of the Max-Planck-Society
2024
TU Dresden
2023
Leibniz Institute for Crystal Growth
2023
Excellence Cluster Universe
2017-2020
The GERDA experiment searches for the lepton-number-violating neutrinoless double-β decay of ^{76}Ge (^{76}Ge→^{76}Se+2e^{-}) operating bare Ge diodes with an enriched fraction in liquid argon. exposure broad-energy germanium type (BEGe) detectors is increased threefold respect to our previous data release. BEGe feature excellent background suppression from analysis time profile detector signals. In window a level 1.0_{-0.4}^{+0.6}×10^{-3} counts/(keV kg yr) has been achieved; if normalized...
We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with GERDA experiment. is a neutrinoless double-β decay experiment which operates high-purity germanium detectors enriched in ^{76}Ge an ultralow background environment at Laboratori Nazionali del Gran Sasso (LNGS) of INFN Italy. Searches were pseudoscalar and vector mass region from 60 keV/c^{2} to 1 MeV/c^{2}. No evidence signal was observed, most...
A bstract The GERmanium Detector Array (Gerda) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta (0 νββ ) decay 76 Ge. technological challenge Gerda to operate in a “background-free” regime region interest (ROI) after analysis cuts full 100 kg · yr target exposure experiment. careful modeling and decomposition full-range energy spectrum essential predict shape composition events ROI around Q ββ 0 search, extract precise measurement...
Abstract Contact tracing is one of several strategies employed in many countries to curb the spread SARS-CoV-2. Digital contact (DCT) uses tools such as cell-phone applications improve speed and reach. We model impact DCT on virus for a large epidemiological parameter space consistent with current literature also combination random testing (RT) social distancing (SD). Modelling done two independently developed individual-based (stochastic) models that use Monte Carlo technique, benchmarked...
Self-blast interrupters have the advantage of operating with low mechanical energy as they build up pressure arc extinguishing gas flow from thermal arc. This creates a higher pressure, but also temperature than in compression. Detailed field and electric computations are necessary to achieve under such conditions removal dielectric recovery view an increase breaking capacity voltage rating. In particular, optimization field/gas density distribution E//spl rho/ is tool improve short-circuit...
Abstract Contact tracing is one of several strategies employed in many countries to curb the spread SARS-CoV-2. Digital contact (DCT) uses tools such as cell-phone applications improve speed and reach. We model impact DCT on virus for a large epidemiological parameter space consistent with current literature also combination random testing (RT) social distancing (SD). Modelling done two independently developed individual-based (stochastic) models that use Monte Carlo technique, benchmarked...
LEGEND is the next-generation experiment searching for neutrinoless double beta decay in 76 Ge. The first stage, LEGEND-200, takes over cryogenic infrastructure of GERDA at LNGS: an instrumented water tank surrounding a 64 m 3 liquid argon cryostat. Around 200 kg Ge detectors will be deployed cryostat, with acting as cooling medium, high-purity passive shielding and secondary detection medium. For latter purpose, instrumentation developed, based on system used Phase II. Wavelength shifting...
In-situ production of radioisotopes by cosmic muon interactions may generate a non-negligible background for deep underground rare event searches. Previous Monte Carlo studies the Gerda experiment at Lngs identified delayed decays $$^{77}$$ Ge and its metastable state $$^{77m}$$ as dominant cosmogenic in search neutrinoless double beta decay $$^{76}$$ Ge. This might limit sensitivity next generation experiments aiming increased mass background-free conditions thereby define minimum depth...
Neutrinoless double-$\beta$ decay of $^{76}$Ge is searched for with germanium detectors where source and detector the are identical. For success future experiments it important to increase mass detectors. We report here on characterization testing five prototype manufactured in inverted coaxial (IC) geometry from material enriched 88% $^{76}$Ge. IC combine large traditional semi-coaxial Ge superior resolution pulse shape discrimination power point contact which exhibited so far much lower...
The delayed decay of $^{77(\mathrm{m})}$Ge, produced by neutron capture on $^{76}$Ge, is a potential background for Germanium based neutrinoless double beta search experiments such as GERDA or the future LEGEND-1000 experiment. In this work we present $^{77}$Ge in full Phase$\,$II data. We employ coincidence method to identify via isomeric state $^{77}$As (9/2+, $475.5\,$keV, $t_{1/2} = 114\,\mu$s). New digital signal processing methods were employed select and analyze pile-up signal. found...
The MONUMENT experiment measures ordinary muon capture (OMC) on isotopes relevant for neutrinoless double-beta (0$\nu\beta\beta$) decay and nuclear astrophysics. OMC is a particularly attractive tool improving the theoretical description of 0$\nu\beta\beta$ decay. It involves similar momentum transfers allows testing virtual transitions involved in against experimental data. During 2021 campaign, measured $^{76}$Se $^{136}$Ba, next-generation searches, like LEGEND nEXO. setup has been...
Sterile neutrinos are hypothetical particles in the minimal extension of Standard Model Particle Physics. They could be viable dark matter candidates if they have a mass keV range. The Karlsruhe tritium neutrino (KATRIN) experiment, extended with silicon drift detector focal plane array (TRISTAN), has potential to search for keV-scale sterile by measuring kinematics $\beta$-decay. collaboration targets sensitivity $10^{-6}$ on mixing amplitude $\sin^2{\Theta}$. For this challenging target,...
In this paper we describe the performance of a light detector for Ar scintillation made wavelength-shifting (WLS) fibers connected to Silicon-Photomultipliers (SiPM). The setup was conceived be used as anti-Compton veto high purity germanium (HPGe) detectors operated directly in liquid Argon (LAr). Background suppression efficiencies different radioactive sources were measured test cryostat with about 800 kg LAr. This work part R\&D effort GERDA experiment.
Abstract The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for neutrinoless double beta decay of 76 Ge, by using high-purity germanium detectors made from isotopically enriched material. combination novel experimental design, careful material selection radio-purity and active/passive shielding techniques result in a very low residual background Q-value decay, about 10 −3 cts/(keV-kg-yr). This makes GERDA first field to be...
The GERmanium Detector Array (GERDA) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for neutrinoless double beta decay of Ge76, by using high-purity germanium detectors made from isotopically enriched material. combination novel experimental design, careful material selection radio-purity and active/passive shielding techniques result in a very low residual background Q-value decay, about 1e-3 counts/(keV kg yr). This makes GERDA first field to be background-free...
Abstract The M onument experiment measures ordinary muon capture (OMC) on isotopes relevant for neutrinoless double-beta ( $$0\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0</mml:mn> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:math> ) decay and nuclear astrophysics. OMC is a particularly attractive tool improving the theoretical description of decay. It involves similar momentum transfers allows testing virtual transitions involved in...
Abstract Sterile neutrinos are hypothetical particles in the minimal extension of Standard Model Particle Physics. They could be viable dark matter candidates if they have a mass keV range. The Karlsruhe tritium neutrino (KATRIN) experiment, extended with silicon drift detector focal plane array (TRISTAN), has potential to search for keV-scale sterile by measuring kinematics β-decay. collaboration targets sensitivity 10 -6 on mixing amplitude sin 2 Θ. For this challenging target, precise...
The combination of an ultra-low background environment with active suppression techniques allows GERDA (GERmanium Detector Array) to perform a background-free search for neutrinoless double beta decay $^{76}$Ge. is located at the Laboratori Nazionali del Gran Sasso (LNGS) INFN in Italy. In Phase II 35.6 kg isotopically enriched high purity germanium detectors are operated liquid argon bath. index region-of-interest $<10^{-3}$ counts/(keV$\cdot$kg$\cdot$yr). No signal has been found data...
We propose a decentralized digital contact tracing service that preserves the users' privacy by design while complying to highest security standards. Our approach is based on Bluetooth and measures actual encounters of people, time period, estimates proximity contact. trace contacts possible spread infectious diseases preventing location tracking users, protecting their data identity. verify improve impact epidemiological models. compare centralized legal perspective find preferable...
Seit mehr als 80 Jahren werden Bau-Argen in der Form GesbR abgewickelt. Daran haben weder die Handelsrechtsreform 2005 noch GesbR-Reform etwas geändert, wofür es – wenn auch nicht im Gesellschaftsrecht liegende Gründe gibt. Die vollständige Neuregelung 27. Hauptstücks des ABGB geht zwar spurlos an Bau-Arge vorüber, hat aber keine grundlegenden Änderungen für Praxis gebracht.
Abstract Excellent spectroscopic performance, event topology information and outstanding radiopurity are unique properties of HPGe detectors that facilitate the search for 0 vββ decay 76 Ge. A detection this process would shed light onto physics beyond standard model, as it uncover Majorana nature neutrinos. The GERDA experiment employs an array detectors, made from isotopically modified material, in active liquid argon shield at LNGS underground laboratory. combination ultra-low background...
Das Sozialbetrugsbekämpfungsgesetz (SBBG) hat nicht nur eine Legaldefinition des Sozialbetrugsbegriffs gebracht, sondern auch die Möglichkeit, bei einen Rechtsträger formal Scheinunternehmereigenschaft festzustellen. An diese Feststellung sind Rechtsfolgen – va Haftung gebunden. Trotzdem bleiben gesetzlichen Regelungen zum Sozialbetrug unsystematisch, sodass neben dem SBBG weitere Gesetze zu beachten sind. Darüber hinaus plant der Gesetzgeber noch im Jahr 2016 Bestimmungen Lohn- und...
Bei Bau-Arbeitsgemeinschaften verpflichten sich die Arge-Partner zur Herstellung eines Bauwerks, wofur iaR der Einsatz von Dienstnehmern erforderlich ist. Wie ist dieser sozialversicherungsrechtlich zu qualifizieren und welche Rechtsfolgen ergeben daraus?