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10/16/24, 5:09โฏPMPoster
The poster presents the advanced ERC project MuSES (ERC grant No 101142396), which will study the physical processes near supermassive black holes that are responsible for launching and propagating relativistic jets in active galactic nuclei (AGN). Project objectives: 1) observational studies of AGN jet geometry, collimation and acceleration; 2) probing the physical mechanism of neutrino...
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Markus Risse (University of Siegen)10/16/24, 5:11โฏPMPoster
Current efforts towards a more fundamental theory beyond the Standard Model of Particle Physics open up a window for deviations from exact Lorentz symmetry. To test Lorentz symmetry, one can take advantage of the extreme energies reached by ultra-high-energy cosmic rays (UHECRs). We use the air showers initiated by UHECRs to study the effects of Lorentz violation (LV), focusing on isotropic,...
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10/16/24, 5:13โฏPMPoster
To reach ultra-low detection thresholds necessary to probe unprecedentedly low Dark Matter masses, target material alternatives and novel detector designs are essential. One such target material is superfluid $^4$He which has the potential to probe so far uncharted light Dark Matter parameter space at sub-GeV masses. The new "Direct search Experiment for Light dark matter", DELight, will be...
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10/16/24, 5:15โฏPMPoster
The KATRIN experiment aims to determine the effective neutrino mass using the kinematics of electrons from the tritium $\beta$-decay. The integral energy spectrum of the electrons is measured by an electro-static high-pass filter, using the MAC-E filter principle (Magnetic Adiabatic Collimation and Electrostatic filter). Only electrons with energies above the retarding potential of the filter...
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Markus Risse (University of Siegen)10/16/24, 5:17โฏPMPoster
Several gamma-ray observatories have discovered photons of cosmic origin with energies in the PeV ($10^{15}$ eV) range. Photons at these energies might be produced as by-products from particle acceleration in so-called PeVatrons, which are widely assumed to be the sources of a large part of galactic cosmic rays. Based on recent measurements of these PeV $\gamma$-sources by LHAASO and HAWC, we...
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10/16/24, 5:19โฏPMPoster
Performing a precision measurement of the tritium ฮฒ-decay spectrum, the Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the neutrino mass with a sensitivity better than 0.3 eV/c2 (90% C.L.) after 1000 measurement days. The current world-leading upper limit of mฮฝ โค 0.8 eV/c2 (90% C.L.) was determined from a combined analysis of the first...
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10/16/24, 5:21โฏPMPoster
Next generation liquid nobel gas detectors for the search of weakly interacting massive particles (WIMPs) aim to increase their sensitivity down to the neutrino fog. To achieve this ambitious goal, it is imperative to further reduce detector backgrounds dominated by LXe intrinsic isotopes of 85Kr and 222Rn ten-times below the unshieldable solar and atmospheric neutrino background. Already the...
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10/16/24, 5:23โฏPMPoster
The Tritium Laboratory Karlsruhe (TLK) of the Institute for Astroparticle Physics (IAP) located at KIT Campus North contributed in advancing the understanding of the radioactive hydrogen isotope tritium and its technical use for applications in nuclear fusion, astroparticle physics and beyond. Two of its outstanding features are its license to handle up to 40 grams of tritium, and its unique...
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10/16/24, 5:25โฏPMPoster
The R&D project KATRIN++ is investigating the extension of the neutrino mass experiment KATRIN in order to achieve a sensitivity of <50 meV and thus be able to reliably determine the neutrino mass in the laboratory if neutrinos have an inverted mass order. To achieve this, a differential measurement method will be applied to significantly increase the statistics and reduce the background rate,...
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10/16/24, 5:27โฏPMPoster
The IceCube Neutrino Observatory, located at the geographic South Pole, consists of a cubic-kilometer in-ice neutrino detector and a square-kilometer array of ice-Cherenkov detectors. It is designed for neutrino astronomy, cosmic ray physics, multi-messenger astronomy, and particle physics. The next-generation expansion, IceCube-Gen2, is currently in development with enhanced detection...
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10/16/24, 5:29โฏPMPoster
The Pierre Auger Observatory in the west of Argentina close to Malargรผe was built to explore the origin and production of ultra-high energy cosmic rays. Comprised of $1660$ water-Cherenkov detectors in an area of more than 3000\,km$^2$ it is the largest observatory of its kind. Besides measuring the shower footprint with these surface detectors, 24 fluorescence telescopes at four sites are...
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Caroline Rodenbeck (Karlsruher Institut fรผr Technologie (KIT))10/16/24, 5:31โฏPMPoster
The neutrino mass is one of the still-to-be-solved puzzles of particle physics. Measuring the neutrino mass is possible by performing precision spectroscopy of the tritium beta-decay spectrum at its endpoint. Until now, experiments following this approach use molecular tritium and are therefore limited by the broadening of the molecular final state distribution.
For future experiments...
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10/16/24, 5:33โฏPMPoster
The central TPC of the future XLZD observatory for rare events is a cylinder of approximately 3m linear scale that contains a total of 60t of cryogenic liquid xenon. Scaling the detector technology from the currently operational instruments XENONnT and LZ is challenging and requires full-scale R&D and later testing of detector components. The unique PANCAKE Facility in Freiburg allows testing...
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10/16/24, 5:35โฏPMPoster
Ultra-high energy cosmic rays (CRs) are messengers that open a window to understanding the most extreme environments in the universe. In order to find out what the sources of these particles are, giant arrays of detectors on earth measure the signals from extensive air-showers that are created in the interaction of those CRs with the atmosphere. While the studies made with these detector...
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10/16/24, 5:37โฏPMPoster
The newly established XLZD (XENON, LZ, DARWIN) collaboration aims to construct and operate the ultimate multi-tonne xenon-based direct detection astroparticle observatory. Hosting a time projection chamber (TPC) with more than 60 tonnes of liquid xenon at its core, with a keV-range threshold and an ultra-low radioactive background it will aim to probe the entire parameter space for WIMP dark...
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Keito Watanabe (Institute for Astroparticle Physics, Karlsruhe Institute of Technology)10/16/24, 5:39โฏPMPoster
Building on the successful cosmic ray observations with the LOw Frequency ARray (LOFAR) telescope, the low frequency part of the Square Kilometre Array (SKA), currently undergoing construction in Australia, will serve as a next-generation cosmic ray observatory in the coming decade. It is planned to have an extremely homogeneous and dense antenna layout of roughly 60,000 antennas in an area of...
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10/16/24, 5:41โฏPMPoster
Environmental neutrons introduce a source of background to rare event searches, such as dark matter direct searches, neutrinoless double beta decay experiments and in cross section measurements for nuclear astrophysics, which take place in deep underground laboratories. Most of these neutrons are produced at the walls of the experimental hall by means of intrinsic radioactivity of the rock and...
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10/16/24, 5:43โฏPMPoster
Neutrinoless double-beta decay (0ฮฝฮฒฮฒ) poses an exciting way of probing the absolute neutrino mass and the Majorana nature of the neutrino. Regardless of the mechanism involved in its production, the observation of 0ฮฝฮฒฮฒ implies new physics, exhibiting lepton number violation, and providing insight into the matter-antimatter asymmetry in the universe. Ge detector technology is extremely well...
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10/16/24, 5:45โฏPMPoster
LEGEND-200 is an experiment designed to search for neutrinoless double beta decay of Ge-76. Located deep underground at LNGS, it operates up to 200 kg of enriched high-purity germanium (HPGe) detectors in a liquid argon (LAr) cryostat. The HPGe detectors are surrounded by the LAr instrumentation, which detects scintillation light emitted upon interactions with ionizing radiation, thus tagging...
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10/16/24, 5:47โฏPMPoster
In the last three decades, underground accelerator laboratories have been essential for studying nuclear reactions at energies relevant to stellar environments, where cosmic-ray-induced background radiation would otherwise obscure the signals of interest.
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Presently, there are only four such laboratories worldwide, two of them in Europe: The Felsenkeller shallow-underground laboratory in... -
10/16/24, 5:49โฏPMPoster
Magnetic microcalorimeters (MMCs) are cryogenic single-particle detectors that combine an outstanding energy resolution, a fast signal rise time, a wide energy bandwidth as well as an almost ideal linear detector response. For this reason, MMCs are highly suited for precision experiments or rare-event searches in astroparticle physics as well as neighboring physics fields.
In this...
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10/16/24, 5:51โฏPMPoster
The LEGEND-200 experiment at Laboratori Nazionali del Gran Sasso is searching for neutrinoless double beta decay using high-purity germanium (HPGe) detectors enriched in $^{76}$Ge, immersed in a liquid argon cryostat instrumented to detect scintillation light. A background model has been developed based on Monte Carlo simulations and data from the first year of science runs โ including special...
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10/16/24, 5:53โฏPMPoster
Ultra-high energy (UHE) cosmic rays and neutrinos induce particle cascades in the atmosphere, called extensive air showers. The Giant Radio Array for Neutrino Detection (GRAND) is designed for measuring the radio emission of inclined air showers to cover a larger detection area. It will consist of multiple sub-arrays and a total area of 200 000 kmยฒ with one radio antenna per square kilometre....
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10/16/24, 5:55โฏPMPoster
The Large Enriched Germanium Experiment for Neutrinoless ฮฒฮฒ decay (LEGEND) searches for 0ฮฝฮฒฮฒ in the 76Ge isotope.
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A discovery would reveal the Majorana nature of neutrinos and prove lepton number non-conservation.
The proposed LEGEND-1000 phase consists of 1000 kg of enriched (>90%) Germanium detectors immersed in underground-sourced liquid argon, located at the underground facility LNGS in... -
Julien Dรถrner (Ruhr University Bochum)10/16/24, 5:57โฏPMPoster
The Central Molecular Zone (CMZ) is one of the most extreme and close by astrophysical environments and of particular interest for studies of non-thermal processes. It is also one of the first known sources of cosmic-ray acceleration to PeV energies within our Galaxy. The emission of TeV gamma rays in the CMZ is affected by the source position and the distribution of the gas, photons and...
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10/16/24, 5:59โฏPMPoster
The Karlsruhe Tritium Neutrino (KATRIN) experiment probes the absolute neutrino mass scale by precision spectroscopy of the tritium $\beta$-decay spectrum. With the data taken by the end of 2025, a final sensitivity better than 300$\,$meV/c$^2$ (90\% C.L.) is anticipated by the collaboration with a total of 1000 days of measurement.
Taking the next steps in enhancing the sensitivity, for...
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10/16/24, 6:01โฏPMPoster
KM3NeT is a neutrino telescope currently under construction in the Mediterranean Sea. Its densely instrumented ORCA part is optimised for the detection of atmospheric neutrinos in order to study neutrino oscillations, measure the oscillation parameters, and eventually determine the neutrino mass ordering.
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KM3NeT/ORCA is also sensitive to tau appearance, i.e. the observation of tau neutrinos... -
Mr Manuel Bรถhles (Johannes Gutenberg University Mainz), Mr Meishu Lu (Technical University of Munich)10/16/24, 6:03โฏPMPoster
One of the most promising approaches for the next generation of neutrino experiments is the development of large hybrid Cherenkov/scintillation detectors, made possible by recent advancements in photodetection technology and liquid scintillator chemistry. This poster discusses the development of a potential future detector liquid with notably slow light emission. The properties of this...
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Jutta Schnabel (Erlangen Centre for Astroparticle Physics (ECAP/FAU))10/16/24, 6:05โฏPMPoster
The movement of open science has gained momentum in recent years, demanding a cultural change in science towards sharing of research data, software and processes, with open science policies requested for most major project. The KM3NeT collaboration has responded to this demand not only by endorsing a policy, but is actively developing its computing infrastructure and processes towards the goal...
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Jutta Schnabel (Erlangen Centre for Astroparticle Physics (ECAP/FAU))10/16/24, 6:07โฏPMPoster
The adaptation of large-language models (LLMs) like ChatGPT for information retrieval from scientific data, software and publications is offering new opportunities to simplify access to and understanding of science for persons from all levels of expertise. They can become tools to both enhance the usability of the open science environment we are building as well as help to provide systematic...
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10/16/24, 6:09โฏPMPoster
Precise cross-section measurements in nuclear astrophysics demand targets with high thickness, purity, and stability. Traditional methods often struggle to achieve these requirements simultaneously. To address this challenge, we present a newly developed jet and extended windowless gas target system. Furthermore, the gas target is free of chemical contaminations.
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We have developed a gas... -
10/16/24, 6:11โฏPMPoster
The Karlsruhe Tritium Neutrino (KATRIN) experiment was designed to measure the absolute neutrino mass scale based on a high-precision measurement of the tritium ฮฒ-decay spectrum, close to its endpoint. Its unprecedented tritium source luminosity and spectroscopic quality makes it a unique instrument to also search for physics beyond the Standard Model (BSM). Most notably, a keV-scale sterile...
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Victoria Tokareva (KIT)10/16/24, 6:13โฏPMPoster
The German National Research Data Infrastructure (NFDI) fosters FAIR data management and the sharing of digital research objects across diverse scientific fields. PUNCH4NFDI brings together Germany's astroparticle, particle, astrophysics, hadron, and nuclear physics communities to collaborate on the development and utilization of hardware and software infrastructures that facilitate the...
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10/16/24, 6:15โฏPMPoster
This poster presents an ultra low-level ๐พ-ray counting setup in the shallow-underground laboratory Felsenkeller in Dresden, Germany. It includes a high-purity germanium detector of 163% relative efficiency within passive and active shields. The passive shield consists of 45 m rock overburden (140 meters water equivalent), 40 cm of low-activity concrete, 15 cm of high purity lead, 10 cm of...
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David Schmidt (Karlsruhe Institute of Technology)10/16/24, 6:17โฏPMPoster
With the knowledge and statistical power derived from two decades of measurements, the Pierre Auger Observatory has significantly advanced our understanding of ultra-high-energy cosmic rays whilst unearthing an increasingly complex astrophysical scenario and tensions with hadronic interaction models. The field now demands primary mass as an observable with an exposure that only the surface...
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10/16/24, 6:19โฏPMPoster
The absolute value of the mass of the neutrino remains an unsolved puzzle of particle physics. One way to measure the neutrino mass is spectroscopy of electrons from the tritium beta decay. The current best limit on the effective anti-electron neutrino mass of $m_\nuย <ย 0.45\,\mathrm{eV\,c}^{โ2}\ \mathrm{(90\,\%\ C.L.)}$ was published by the KATRIN collaboration in 2024. KATRIN measures the...
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10/16/24, 6:21โฏPMPoster
The Accelerator Neutrino-Neutron Interaction Experiment (ANNIE) is a 26-ton water Cherenkov neutrino detector on the Booster Neutrino Beam (BNB) at Fermilab. Among its primary physics goals is the measurement of the final-state neutron multiplicity of neutrino interactions, as well as the measurement of the charged current cross section of muon-neutrinos.
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Another main goal of ANNIE is the... -
Neven Kovac (Institute for Astroparticle Physics, Karlsruhe Institute of Technology)10/16/24, 6:23โฏPMPoster
Currently, the tightest constraints on the absolute scale of neutrino mass are obtained by the KATRIN (KArlsruhe TRItium Neutrino) experiment, giving an upper limit on the mass of electron anti-neutrino of 0.45 eV (https://doi.org/10.48550/arXiv.2406.13516). Final projected sensitivity of the KATRIN experiment will be in the vicinity of 0.3 eV, and should be reached at the end of 2025.
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Going... -
10/16/24, 6:25โฏPMPoster
MOTION is a time projection chamber with 80 kg of liquid xenon (LXe), serving as a testing platform for high-voltage (HV) delivery of around -200 kV and stability in LXe for next-generation dark matter detectors. The objective of this detector is to study the breakdown voltage of liquid xenon, which might depend on different factors such as surface area of the conductor and the purity of the...
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Martin Descher10/16/24, 6:27โฏPMPoster
The KATRIN experimentโs search for keV sterile neutrinos requires an upgraded detector system to perform precision electron spectroscopy at high count rates. The detector upgrade, the TRISTAN detector, is composed of 166-pixel silicon drift detector modules. Production and characterization of the first TRISTAN modules is summarized, and a detector energy resolution of $< 300\,\mathrm{eV}$...
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