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Mr Hendrik Krause (IPE)Poster
The CMS Phase-2 High-Granularity Calorimeter (HGCAL) employs a high-bandwidth front-end with significant variations in topology and data rates. To support the back-end firmware development, an FPGA-based front-end emulator has been implemented on a Serenity-S1 FPGA board. The emulator framework uses lpGBT link emulation along with output buffer emulation of the key front-end ASICs. Additional...
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Kylian Schmidt (IAP)Poster
The design of modern high-energy physics detectors is a highly intricate problem: maximize the physics performance while balancing various manufacturing constraints. A holistic solution consists in translating the design process into an optimization task suitable for Machine Learning methods. The main difficulty however lies in producing meaningful gradients from the detector...
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Théo Picardel (Karlsruher Institut für Technologie)Poster
The KATRIN experiment aims to constrain the effective mass of the electron anti-neutrino on a sub 0.3 eV level, by measuring the tritium beta decay spectrum with high-resolution and high statistics. For being able to reach this ambitious goal, KATRIN needs to have a good understanding and quantification of all systematic effects.
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Rear-wall backscattering is one of the most important... -
Marcus Kar Fai Lai (IAP - TLK)Poster
Direct measurements of the tritium β-decay spectrum near its endpoint provide one of the most sensitive probes of the absolute neutrino mass. After the KATRIN collaboration published the world-leading upper limit of $m_\nu$ = 0.45$\,$eV (90% C.L.), a new R&D phase is ongoing to develop an experiment with an improved sensitivity on $m_\nu$ of at least one order of magnitude. Sensitivity studies...
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Sandro Stamenkovic (Institute for Astroparticle Physics (IAP-KIT))Poster
The KATRIN experiment’s goal of directly determining the neutrino mass with unprecedented precision requires not only meticulous handling of large tritium quantities and a state-of-the-art spectrometer, but also a thorough understanding of all the systematic effects affecting the final neutrino mass analysis. The most dominant of these systematics stem from source-related effects, where the...
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Gudrun Niehues (Karlsruhe Institute of Technology, IBPT)Poster
How can the ultrafast electromagnetic fields generated by electron accelerators be measured with compact and versatile instrumentation? We address this question using a fiber-coupled electro-optical sensor fabricated in thin-film lithium niobate. The sensor incorporates an integrated Mach–Zehnder interferometer, converting electric-field-induced changes into a measurable intensity signal of an...
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Dr Mathias Wegner (Karlsruhe Institute of Technology)Poster
The Competence Center for High-Resolution Superconducting Sensors (HSS) at the Karlsruhe Institute of Technology (KIT) provides a dedicated microfabrication infrastructure for the development and fabrication of superconducting quantum sensors and superconducting readout electronics. This poster provides an overview of the available fabrication equipment and its role within a future integrated...
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Lukas Erik Mettler (KIT)Poster
The KATRIN Experiment aims to measure the electron neutrino mass with an ultimate sensitivity of below 0.3 eV (90% CL).
Recently, KATRIN completed 1000 days of measurements of the tritium beta-decay spectrum, close to the kinematic endpoint.
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The analysis of the full dataset of KATRIN requires good control of the systematic uncertainties, but also poses computational challenges.
A... -
David FresePoster
The KATRIN experiment probes the effective anti electron neutrino mass by measuring the electrons emitted from the beta decay of molecular tritium T$_2$. The shape of the endpoint region of its kinetic energy spectrum depends the neutrino mass. Recently, the most stringent upper limit of $m_\nu$ = 0.45$\,$eV (90 % C.L.) from direct measurements was reported (Aker et al....
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Leon Siebert (KIT IAP)Poster
Experiments that use self-triggered radio detection need accurate knowledge of their local radio background. This project aims to develop a general measurement setup to examine this background and provide information for site evaluation. The setup has to be sensitive over a wide range of frequencies, it has to be accurate and it needs to be built in a way to minimize its own radio...
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Alexander Elsenhans (IPE)Poster
To improve scintillator-based muon detectors relying on wavelength-shifting (WLS) fibers, high photon detection efficiency and precise time-resolved readout are key requirements. This work presents ANDESPix, an 18x110 pixel single-photon avalanche diode (SPAD) array in a 110 nm CMOS process featuring a dedicated time-to-digital converter (TDC) per pixel. It combines fully parallel per-pixel...
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Daniel Schmitt (KIT)Poster
Gravitational waves (GWs) open a new window onto physics beyond the Standard Model (BSM). Many BSM theories predict a first-order phase transition (FOPT) in the early Universe, during which bubble dynamics in the primordial plasma source a stochastic GW background (SGWB) within reach of future detectors such as the Laser Interferometer Space Antenna (LISA). Predicting this signal reliably...
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Keito Watanabe (Institute for Astroparticle Physics, Karlsruhe Institute of Technology)Poster
The origins of cosmic rays above 10$^{15}$ eV have been unresolved to this day, ever since their initial discovery. At these high energies, cosmic rays are indirectly observed at Earth through the secondary products generated by extensive air showers, a cascade of particles initiated by interactions of cosmic rays within the atmosphere. The electromagnetic particles in the shower also induce...
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Donghwa Kang (KIT)Poster
The IceCube-Gen2 surface array will extend the existing IceTop array at the South Pole by approximately a factor of eight, combining scintillation detectors and radio antennas to measure cosmic-ray air showers. It will complement the expanded in-ice optical array and the new radio array for ultra-high-energy neutrino detection.
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The surface array will enable studies of cosmic rays and their... -
Sarah UntereinerPoster
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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Tim Poppe (KIT)Poster
Nuclear fusion is a promising candidate for a new sustainable energy source. The fuel in most fusion power plants is a mixture of 50% deuterium and 50% tritium. Inside this mixture, a chemical exchange reaction between the isotopologues occurs. This reaction alters the mixture’s composition and by that alters its viscosity. Since this influences the gas’s flow behaviour in the fuel cycle of...
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Keyu Ding (Karlsruher Institut Fuer Technologie)Poster
Next-generation dark matter experiments aim to reach unprecedented sensitivity by increasing detector size, improving background control, and extending stable detector operation. The planned XLZD Observatory will contain around 60 tonnes of liquid xenon (LXe), enabling searches for dark matter and other rare phenomena at sensitivities beyond those of current-generation...
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Dr Mathias Wegner (Karlsruhe Institute of Technology)Poster
Magnetic microcalorimeters (MMCs) are cryogenic, energy-dispersive single-particle detectors characterized by fast signal rise times, outstanding energy resolution, and excellent linearity. Due to their overall performance, MMCs are considered a promising detector technology for several next-generation experiments. This poster provides an overview of their prospective role in KATRIN++, a...
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Nicolas Parra (KIT)Poster
Cosmic inflation is the name given to the primordial epoch of accelerated expansion responsible for generating the initial conditions of our universe. Occurring at energies far beyond those accessible in terrestrial experiments, it provides an ideal theoretical laboratory to explore new physics. Quite remarkably, the different processes taking place during this era can leave their imprint on...
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Shi Yao (Karlsruhe Institute of Technology)Poster
The Einstein Telescope (ET) is a proposed third-generation underground gravitational-wave observatory designed to observe signals at frequencies as low as a few hertz. Newtonian noise is expected to limit its low-frequency sensitivity, particularly in the 3--15~Hz band. Seismic displacement changes the distribution of mass in the surrounding ground, producing time-dependent gravitational...
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Kierthika Chathirathas (Karlsruhe Institute of Technology)Poster
We consider the hypothesis that neutrino masses are generated by a coupling to an ultra-light (pseudo-)scalar field, which provides the dark matter in the universe. This leads to time-varying neutrino masses with a frequency set by the dark matter mass, with implications for neutrino oscillation data. We use that dark matter is in a virialised state in the galaxy and provide a detailed...
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Steffen HahnPoster
The origin of ultra-high-energy cosmic rays (UHECRs) is one of today's most pressing questions in astroparticle physics. Identifying their sources requires precise knowledge of the UHECR mass composition. Since the direct detection of UHECRs is not practical, composition analyses rely on mass-sensitive observables reconstructed from extensive air showers induced by UHECRs in the atmosphere....
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Hanna Sofia HenkePoster
The KATRIN Experiment aims to determine the neutrino mass using precision spectroscopy of electrons from tritium 𝛽-decay. Recently, KATRIN published an improved upper bound of 0.45 eV at 90% C.L. on the effective electron-neutrino mass; the latest step in an on-going effort to reach a target sensitivity of below 0.3 eV. Supplementary to the neutrino mass measurement the high-precision...
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Heng-Hao Chen (KIT, IAP)Poster
High-energy neutrinos from astrophysical sources can show us parts of the universe that photons cannot reach. One way to detect them is through the radio pulses from the particle showers they produce in the ice of Antarctica and Greenland. Recently, ARA observed such radio pulses from cosmic-ray showers hitting the ice, showing that these signals can be seen in practice. The radio emission of...
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Micha Reißig (IBPT, KIT)Poster
How do you measure an event lasting less than a quadrillionth of a second? At KIT IBPT and IPQ, an answer is being developed: In the joint project TEOBAM (with DESY, HZDR, PSI, TU Darmstadt, TU Dortmund, and TH Mittelhessen), we are developing an optical measurement system designed to determine the arrival time of ultra-short electron bunches with relativistic speeds at single-digit...
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Daniel Naredo (KIT)Poster
The majoron is the Nambu-Goldstone boson associated with the spontaneous breaking of a global $B-L$ symmetry. Remarkably, the minimal majoron framework can simultaneously address three key empirical indications of physics beyond the Standard Model: neutrino masses, the matter-antimatter asymmetry, and dark matter. In this work, we identify the cosmologically viable region in which majoron dark...
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Johannes Bertsch (IAP)Poster
Electron backscattering at the gold-plated rear wall disk is an important systematic effect in the KATRIN experiment, as it modifies the observed electron energy spectrum and can therefore bias the determination of the neutrino mass. A precise description of this process is essential for the KATRIN neutrino-mass analysis
This poster presents an overview of the theoretical modeling of...
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Dorian Guthmann (ETP)Poster
We present the current status of a new measurement of the weak mixing angle using the forward–backward asymmetry in Drell–Yan processes at the Z pole.
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As a first step, we aim to reproduce the Run 2 measurement [1] and subsequently adapt and improve the analysis to Run 3 conditions.
The current work focuses on setting up the analysis workflow for Run 3 Monte Carlo samples and on establishing... -
Berenika Čermáková (IAP)Poster
Ultra-high-energy cosmic rays (UHECRs) are charged particles of extraterrestrial origin reaching energies above $1\,\text{EeV}$.
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Their origin and acceleration mechanisms are not understood.
Unlike in the case of gamma astronomy, UHECRs are deflected by magnetic fields.
Hence their arrival directions (AD) do not point to their sources.
The level of deflection depends on the rigidity of the... -
23. TwinRISE Trusted AI-Generated Digital Twins for Research Infrastructures & Scientific ExcellenceJulian Gethmann (KIT: IBPT/LAS)Poster
This contribution presents the EU project TwinRISE and IBPT's part in it. The project combines accelerator and medicine expertise and aims for AI-generated Digital Twins.
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Athanasios Koutsostathis (Institut für Beschleunigerphysik und Technologie, KIT)Poster
The Institute for Beam Physics and Technology (IBPT) at the Karlsruhe Institute of Technology (KIT) is actively developing a growing program of radiotherapy-oriented accelerator research, combining experiments at the Ferninfrarot LINAC- und Test-Experiment (FLUTE) accelerator with studies towards the development of novel dosimetry methods. FLUTE was designed to operate over a broad range of...
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Simon BranerPoster
At the Karlsruhe Research Accelerator (KARA), electron beams of up to 200 mA with an energy of up to 2.5 GeV are stored. To determine the transverse beam size, the synchrotron radiation emitted at a five degree port of a bending magnet is coupled into a double-slit interferometer setup. Analysis of the interferogram in the visible spectrum provides the transverse beam size even below the...
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