15–19 Jun 2026
Europe/Rome timezone

Session

Poster Session

16 Jun 2026, 16:00

Presentation materials

There are no materials yet.

  1. Patrick Baer
    Poster Session
    poster

    For ET-LF, novel silicon-based coatings can be a potential solution to decrease Brownian thermal noise and increase the ET sensitivity. To keep coating absorption at levels comparable to current coatings, operation at an increased laser wavelength, for example to 2090 nm, is required. ETpathfinder aims to perform investigations on IFOs at 2090nm and therefore requires a high-stability laser...

    Go to contribution page
  2. Elise Van den Bossche (Vrije Universiteit Brussel)
    Poster Session
    poster

    The ETpathfinder research facility in Maastricht is dedicated to developing key technologies for the Einstein Telescope (ET). By implementing these in a 10 m prototype cryogenic interferometer, the facility aims to investigate and validate their performance and compatibility within an ET-like environment.
    One such technology is a novel 1550 nm laser source, developed by the Max Planck...

    Go to contribution page
  3. Boris Martin (University of Liège)
    Poster Session
    poster

    Estimating the amplitude of Newtonian Noise due to elastic waves in the ground requires accurate modelling of the medium and the surrounding geometry. Time-domain methods based on spectral elements [1] are popular but rely on hexahedral elements which may struggle to represent accurately complex shapes. Furthermore, small elements near caves and tunnels may overconstrain the time step (due to...

    Go to contribution page
  4. Enzo Tapia (Nikhef)
    Poster Session
    poster

    Designing an instrument like ET demands simulation tools that are not only robust but also highly flexible. In this poster we showcase some of the capabilities of Finesse3 applied in the context of ET to explore its complex design and sensitivity requirements.
    In Finesse3,so-called Actions represent a paradigm shift from static simulations to dynamic workflows. While the model defines the...

    Go to contribution page
  5. Mr Wajid Ali (Università di Genova)
    Poster Session
    poster

    Squeezing angle rotation using EPR-entangled beams has already been demonstrated in the MHz regime using test cavities by two independent experiments. At the R&D squeezing laboratory of the European Gravitational Observatory, in Italy, a new experimental setup is underway whose aim is the first demonstration of frequency-dependent squeezing in a radiation-pressure-noise-limited suspended...

    Go to contribution page
  6. Mr David Guerrero Zuazo (CERN), Mr Marko Cinkul (CERN), Mr Riccardo Vasapollo (CERN), Mr Romain Masson (CERN)
    Poster Session
    poster

    The Einstein Telescope (ET) aims for an order-of-magnitude improvement in strain sensitivity and an extended low-frequency range compared to current Gravitational Wave (GW) detectors [1]. This ambition presents major challenges for the design of the large-scale technical infrastructure supporting the facility.
    Given the strong overlap in technologies and engineering approaches developed for...

    Go to contribution page
  7. Mr Sheikh Ammad (CERN), Natalija Beslic (CERN)
    Poster Session
    poster

    As part of the development of a robust safety concept for the underground infrastructure of the Einstein Telescope (ET), a HAZard IDentification (HAZID) workshop was organised as the first step to systematically identify potential hazards and prioritise safety studies. A multidisciplinary team of subject matter experts identified and reviewed systematically a total of 324 hazards related to...

    Go to contribution page
  8. Trond Ryberg (GFZ)
    SCB
    poster

    The Lausitz (Saxony) is considered a region with particularly low seismic background noise. It is therefore earmarked as a possible location for a so-called Low Seismic Lab as part of the newly founded German Center for Astrophysics (DZA) and for the Einstein Telescope, the next generation of gravitational wave detectors.

    As part of the preliminary site investigations, several temporary...

    Go to contribution page
  9. Eleni Minakaki (Nikhef)
    Poster Session
    poster

    To achieve the high gravitational wave strain required for Einstein Telescope, vibration isolation systems must meet stringent performance requirements, particularly at low frequencies. This demands inertial sensors that are both highly sensitive and mass producable, as large facilities require hundreds of units with consistent performance.
    Similar challenges arise in the semiconductor...

    Go to contribution page
  10. Thomas Christian Hahn (Fraunhofer Research Institution for Energy Infrastructures and Geotechnologies IEG)
    Poster Session
    poster

    In this study, a comparative analysis of probe-based gas permeability measurements was conducted on a drill core from the Lusatian granodiorite. The investigation forms part of a broader core characterization project related to the planned Einstein Telescope candidacy in the Lusatian Granodiorite (Hasinger et al., 2022). As the facility requires minimal seismic disturbance, understanding the...

    Go to contribution page
  11. Tobias Eckhardt
    Poster Session
    poster

    Current gravitational wave detectors are limited by noises, at frequencies below 10 Hz, related to currently used local displacement sensors. In this poster we present our research on compact displacement sensors based on deep-frequency modulation interferometry (DFMI), for the local displacement measurement of test-masses of future ground based detectors like ET.

    Go to contribution page
  12. Maike Kühler
    Poster Session
    poster

    Due to its low mechanical quality factor and low thermal conductivity at cryogenic temperatures, the so far used material for mirror suspensions, silica, is not suitable to reach the aimed sensitivity goals. Silicon, therefore, is a strong candidate for use in suspension elements due to its favourable properties at low temperatures, including a high mechanical quality factor, excellent thermal...

    Go to contribution page
  13. Dr Divyajyoti . (LIGO Scientific Collaboration)
    Poster Session
    poster

    Star-formation rate (SFR) is currently measured with electromagnetic probes. However, these probes often track luminosity which is then converted to SFR depending on various factors such as initial mass function, dust extinction, etc. Moreover, data points about redshift of $z=4$ are difficult to obtain through electromagnetic probes. Gravitational Waves (GWs) provide an independent probe to...

    Go to contribution page
  14. Prof. Rainer Spurzem (Univ. of Heidelberg, ARI/ZAH)
    Poster Session
    poster

    Nuclear and globular star clusters (NSC and GC) are spectacular self-gravitating stellar systems in our Galaxy and across the Universe - in many respects. They populate disks and spheroids of galaxies as well as almost every galactic center. In massive elliptical galaxies NSCs harbor supermassive black holes, which might influence the evolution of their host galaxies as a whole. The evolution...

    Go to contribution page
  15. Anna Green (Nikhef), Antonio Perreca, Mikhail Korobko, Max Majoor, Jonathan Bratanata, Lucas Hermida Pena
    Poster Session
    poster

    The Einstein Telescope has begun to transition from ‘concept’ to ‘project’ – meaning the tricky work of integrating the many essential technologies, currently still in R&D, into one coherent detector design. Over the last two years, intensive efforts have resulted in new optical layouts, informed by basic optical requirements towards the sensitivity and controllability of each interferometer,...

    Go to contribution page
  16. Mr Gilles Magain (University of Liège)
    Poster Session
    poster

    The ET-FIBER project is a collaborative R&D initiative, focused on developing silicon fibers for suspending a 70 kg monocrystalline silicon test mass in the ET-CRISTAL prototype. ET-CRISTAL serves as a critical cryogenic prototype for the Einstein Telescope, which operates a large monocrystalline silicon mirror cooled radiatively to 20–25 K, while achieving low seismic noise below 10 Hz...

    Go to contribution page
  17. Ricardo Cabrita (UC Louvain)
    Poster Session
    poster

    Next-generation detectors plan to have circulating powers in the MW range. In particular, the high-frequency Einstein telescope (ET-HF) is expected to operate at 3 MW circulating power to enhance sensitivity at high frequencies. Meanwhile, current detectors are operating at optical powers far below the design values. Major challenges with high power operation come from thermal deformations and...

    Go to contribution page
  18. Dr Jue Zhang (UCLouvain)
    Poster Session
    poster

    The ET-HF (high-frequency interferometer) is expected to operate at very high circulating optical powers of around 3 MW to enhance sensitivity at high frequencies; however, such extreme power levels inevitably introduce parametric instability (PI) as a critical challenge for stable operation. Parametric instability arises from the three-mode interaction between the fundamental optical mode,...

    Go to contribution page
  19. Hsiang-Chieh Hsu (RWTH Aachen University, III. Physikalisches Institut B)
    Poster Session
    poster

    The Einstein Telescope (ET) requires 120 km of beam pipes with a diameter of 1 meter. Additionally, to achieve the ET's design sensitivity, a residual pressure of below $10^{-10}$ mbar must be attained. Meeting both requirements will cause the vacuum system cost to represent one-third of the total anticipated budget, given current production and vacuum technologies. Continuous on-site...

    Go to contribution page
  20. Elena Codazzo
    Div10
    poster

    In this work, we use the coherent WaveBurst 2G (cWB-2G) search pipeline in the context of the Einstein Telescope (ET). cWB-2G is a well-established, unmodeled algorithm and one of the main pipelines for the detection and reconstruction of transient gravitational-wave signals in current-generation detectors.
    The main goal of this study is the search for and characterization of burst-like...

    Go to contribution page
  21. Brieux Thibaut (Uliege)
    Poster Session
    poster

    Seismic motion remains a major limitation for low-frequency gravitational-wave detection. Reaching the target ET-LF sensitivity requires substantial improvements to current isolation systems. One approach to enhance low-frequency seismic isolation relies on a combination of passive and active strategies. However, active isolation faces important limitations due to the sensing techniques used...

    Go to contribution page
  22. Mohamed Elbashbishy
    Poster Session
    poster

    We propose developing a fast-closing, ultra-high vacuum (UHV) shutter system to protect the Einstein Telescope. Even minor vacuum failures or sudden large leaks in next-generation gravitational-wave observatories can generate pressure fronts that propagate at velocities of up to ~1000 meters per second. These pressure fronts pose a serious risk to sensitive optical components, such as mirrors,...

    Go to contribution page
  23. Robin Cornelissen
    Poster Session
    poster

    Femto is a MATLAB 6-DoF modeling framework for 0D/1D mechanical systems, focused on seismic isolation design, analysis and optimisation specifically designed for gravitational-wave detector like suspensions. This poster will highlight examples of applied use-cases, benchmarks and features.

    Some applied use cases

    • Omnisense - Nikhef/VU
    • Conceptual Suspension Design for Einstein...
    Go to contribution page
  24. Jeremie Gobeil, Miron Van der Kolk
    Poster Session
    poster

    Developing an optical design for ET that achieves the scientific goals within the established constraints is a core goal of the current ET collaboration. A crucial part of this is running optical simulations to test designs, explore novel ones, and to define constraints on material and detectors. To fully utilise a simulation tool, properly interpret its results and work within its...

    Go to contribution page
  25. Elguja Abuladze (ICA (PGI-4), Forschungszentrum Juelich GmbH)
    Poster Session
    poster

    Seismic and environmental noise, particularly Newtonian noise, constitute a fundamental
    limitation for the Einstein Telescope, motivating the development of
    advanced, data-driven approaches for noise mitigation to improve the sensitivity
    and operational stability of its interferometric systems. Real-time compensation
    of Newtonian noise can improve sensitivity of the sensor and allow...

    Go to contribution page
  26. Kai Wu (Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg)
    Poster Session
    poster

    The Einstein Telescope (ET) will enable precision studies of large populations of compact-binary sources, making robust astrophysical modelling of dynamical formation channels increasingly important. In this contribution, we present first results from DRAGON-III, a new suite of realistic million-body direct N-body simulations of globular and nuclear star clusters evolved over cosmic time....

    Go to contribution page
  27. Paul Ophardt (Helmut-Schimidt-Universität)
    Poster Session
    poster

    Seismic Newtonian noise (NN) is expected to limit the low-frequency sensitivity of the Einstein Telescope (ET), requiring advanced mitigation strategies. Current approaches rely on seismometer arrays and stochastic models, but are constrained by limited spatial sampling and difficulties in separating compressional (P) and shear (S) wave contributions.

    We investigate the potential of fusion...

    Go to contribution page
  28. Laszlo Gergely
    Poster Session
    poster

    Cylindrical symmetry has multiple astrophysical applications: strings, galactic dark matter filaments, AGN / quasar jets. The general relativistic cylindrically symmetric vacuum allows for a static ground state, the Levi–Civita spacetime and multiple types of Einstein–Rosen exact waves. We analyze the static background, which allows for a strong and naked singularity as the symmetry axis and...

    Go to contribution page
  29. Mohamed Samy Elzokm
    Poster Session
    poster

    Accurate modeling of Newtonian noise (NN) is a critical requirement for the low-frequency sensitivity of next-generation gravitational-wave detectors such as the Einstein Telescope (ET). In this work, we investigate the consistency and convergence of different approaches used to compute gravitoelastic correlations induced by seismic fields.

    In practical applications, arrays of seismic...

    Go to contribution page
  30. Dr Dirk Becker (University of Hamburg)
    SCB
    poster

    Ambient seismic noise beamforming tries to identify the direction (traditional one component beamforming) or the direction and wavetype (three component beamforming) of the incoming ambient noise field. This identification is only possible when coherent signals are recorded over an extended receiver array. The presence of very local, often station specific, noise sources can severely...

    Go to contribution page
  31. Niklas Nippe
    Poster Session
    poster

    The Einstein Telescope aims to detect gravitational waves with unprecedented low-frequency sensitivity. In this regime, Newtonian Noise (NN) from seismic density fluctuations in the surrounding rock becomes a dominant limitation. While NN mitigation classically relies on arrays of seismometers measuring translational seismic motion, rotational motion carries complementary information that...

    Go to contribution page
  32. Philipp Fesseler (Karlsruhe Institute of Technology (KIT))
    SCB
    poster

    Between December 2024 and January 2025 around 550 seismic stations were deployed in and around two wind turbines (WTs) at the WINSENT test field on the Swabian Alp. In this work, the focus is on the stations deployed in the foundation of the southern turbine and on the stations in distances of less than 100 meters from it. A plane is fitted to the vertical displacement measurements of 6...

    Go to contribution page
  33. Josie Altenhövel (RWTH Aachen University)
    Poster Session
    poster

    The Einstein Telescope is based on a configuration of multiple interferometers with fixed geometric relations. In a triangular configuration, this enables the construction of a null stream in which gravitational-wave contributions cancel, while local disturbances remain with finite amplitude. Events appearing in the null stream can therefore be identified as noise and are excluded from...

    Go to contribution page
  34. Sascha Rieger
    Poster Session
    poster

    The LIGO Magazine is published twice a year by the LIGO Scientific Collaboration. Articles focus on the people behind the science, featuring personal stories, interviews, and advice, as well as news from across the gravitational-wave community. Ever wondered what it is like working at the LIGO observatory sites, or being on-call to look at gravitational-wave event triggers as they come in (day...

    Go to contribution page
  35. Dr Lorenzo Lunghini (European Gravitational Observatory (EGO))
    Poster Session
    poster

    Environmental noise can affect the performance of ground-based gravitational-wave interferometric detectors, such as Virgo, through magnetic and vibro-acoustic coupling mechanisms, impacting both the detector sensitivity and the surrounding experimental areas hosting sensitive equipment.

    In this work, we present measurements of magnetic coupling functions at low frequency (below 25 Hz) at...

    Go to contribution page
  36. Eugenio Benedetti (INFN Roma1)
    Poster Session
    poster

    Within the framework of the ARC-ETCRYO project, a scaled prototype of the ET cryogenic payload has been developed. This testbed serves as a fundamental R&D platform to validate the technologies for the cryogenic detector, specifically addressing the challenges of efficient heat extraction and thermal noise mitigation.
    This contribution details the design of the payload and its dedicated...

    Go to contribution page
  37. Andrea Cozzumbo
    Poster Session
    poster

    Recent DESI results, combined with other cosmological probes, have revived interest in dynamical dark energy, hinting at phantom crossing and a phantom regime at $z \gtrsim 1$. These observations have motivated a new class of modified gravity (MG) models consistent with current data but exhibiting rich phenomenology beyond $\Lambda$CDM. Several of these theories introduce a non-minimal...

    Go to contribution page
  38. Jan Pihl, Oscar Heuwes
    Poster Session
    poster

    The detection of gravitational waves from binary black hole (BBH) systems by next-generation interferometers like the Einstein Telescope presents a complex parameter estimation challenge. This work explores a deep learning approach using Normalizing Flows, conditioned on feature vectors extracted by diverse machine learning models, to robustly estimate the chirp mass and luminosity distance,...

    Go to contribution page
  39. Luca D'Onofrio
    Poster Session
    poster

    Newtonian Noise (NN) arise from seismic density fluctuations coupling gravitationally to the test masses of the Einstein Telescope (ET) and may be important at frequencies below 10 Hz. Classical linear subtraction methods like the Wiener filter provide optimal solution under the linearity assumption but they face fundamental limitations when the seismic field contains contributions to the...

    Go to contribution page
  40. Jan Kelleter (RWTH Aachen University)
    Poster Session
    poster

    An important noise source for ground based gravitational wave detectors in the low frequency regime is Newtonian noise caused by density fluctuations in the medium surrounding the mirrors. To reach design sensitivities on advanced detectors, like the Einstein Telescope, active mitigation is necessary. Seismic sensors will be placed around the mirror cavities to predict the Newtonian noise...

    Go to contribution page
  41. Nils Chudalla (RWTH)
    SCB
    poster
  42. Ismail El Ouedghiri-Idrissi
    Poster Session
    poster

    The next generation of gravitational wave detectors, such as the Einstein Telescope and LIGO Voyager, requires unprecedented sensitivity. A key limitation to this sensitivity is thermal noise from mirror coatings, particularly within their most sensitive frequency range. To address this, next-generation detectors are shifting toward cryogenic low-frequency interferometers, with silicon serving...

    Go to contribution page
  43. Tobias Reike
    Poster Session
    poster

    Estimating the source parameters of gravitational wave signals is commonly performed with Bayesian inference or, more recently, simulation-based inference using deep learning techniques. In the context of next generation detectors these methods must address the significant challenge posed by long-duration signals, which may span several minutes to hours. Such extended signals result in...

    Go to contribution page
  44. Levon Mnoyan (Zuyd University of Applied Sciences)
    Poster Session
    poster

    Particle Deposition Measurements in the Cleanroom of the ETPathfinder

    Research into the influence of the Beamsplitter assembly process on particle deposition

    Author:
    Levon Mnoyan
    Affiliations:
    1. Zuyd University of Applied Sciences, Heerlen
    2. SAC-Nederland, Kerkrade
    3. ETPathfinder, Maastricht (Maastricht University)
    Topic: Particle deposition measurements during construction of...

    Go to contribution page
  45. Tomasz Bulik
    poster

    Einstein Telescope (ET) is a third-generation gravitational wave (GW) detector with tenfold better sensitivity compared to the advanced LIGO detectors. It will be capable of observing copious stellar mass binary black hole mergers up to a redshift of 10 which will make it especially useful for cosmography. We generate a mock gravitational wave event catalog for the Einstein Telescope and show...

    Go to contribution page
  46. Tom Niggemann
    Poster Session
    poster

    The planned Einstein Telescope (ET) requires an exceptionally quiet seismic environment in the 2–10 Hz band, which coincides with the higher-order tower bending eigenmodes of modern wind turbines. Regardless of the choice of site for ET, renewable energy is being expanded worldwide. Therefore understanding and mitigating seismic vibrations from wind turbines is becoming increasingly important....

    Go to contribution page
  47. Nils Leander Weickhardt (Universität Hamburg)
    Poster Session
    poster

    Resonantly enhanced Deep Frequency Modulation Interferometry (ReDFMI) is a novel displacement sensing technique, which combines Deep Frequency Modulation Interferometry (DFMI) and resonant enhancement. ReDFMI is capable of multi-fringe displacement sensing with absolute ranging and (sub-) femto-meter precision, which can be incorporated in a compact optical setup. On this poster we present the...

    Go to contribution page
  48. Stefan Krischer (RWTH Aachen University)
    Poster Session
    poster

    Minimizing environmental impact is essential for the Einstein Telescope, both as a societal responsibility and to meet the expectations of funding agencies. Computing will account for a significant share of operational energy use and is therefore a priority. We are developing a concept for a climate-neutral ET computing center that uses intelligent workload scheduling to align load with...

    Go to contribution page
  49. Emma Prins (Nikhef)
    Poster Session
    poster

    ETpathfinder is a research and development facility for the future Einstein Telescope, located in Maastricht, the Netherlands. One of its primary objectives is the testing of a newly developed cryogenic system, designed to cool silicon test masses to 15K without introducing additional seismic or thermal noise. This system is based on a modular cryochain design, consisting of multiple sorption...

    Go to contribution page
  50. Waleed Esmail (University of Münster)
    Poster Session
    poster

    Seismic forecasting is increasingly being approached as a sequence modeling problem, where modern architectures can directly learn the temporal dynamics of ground motion from raw waveform data. In this work, I introduce a transformer-based framework that treats seismic signals as autoregressive token sequences, enabling short-horizon forecasting. Continuous waveforms are converted into...

    Go to contribution page
  51. Dr Raphael Burchartz (RWTH)
    SCB
    poster
  52. Michal Ostrowski (Jagiellonian University)
    Poster Session
    poster

    Extremely Low Frequency (ELF) electromagnetic waves are considered a potential source of noise for GW interferometers. Due to deep ground penetration of such waves the Einstein Telescope will be also potentially a subject to such source of noise. A possible influence of ELF waves in the Schumann resonance range (7-50 Hz) was widely studied for the LVK detectors. Currently we turned our...

    Go to contribution page
  53. Pritam Sarkar (Max Planck Institute for Gravitational Physics, Hannover)
    Poster Session
    poster

    Suspension Platform Interferometers (SPIs) have proven highly effective at suppressing relative motion between seismic‑isolation platforms, thereby reducing the differential motion of the suspended optics. Because of this success, the interferometric read‑out of inter-platform motion with SPIs is now being considered for implementation in the current generation of gravitational‑wave detectors...

    Go to contribution page
  54. Guglielmo Ranaudo (RWTH Aachen University)
    Poster Session
    poster

    The ETpathfinder is a cryogenic test facility in Maastricht, aimed at developing core technologies for the Einstein Telescope. The facility utilises a high-sensitivity ($<1\cdot 10^{-18}$ m/Hz at 10 Hz), 10-meter interferometer to evaluate crucial subsystems. A crucial aspect is the performance of crystalline silicon test masses and their suspensions under extreme cryogenic operating...

    Go to contribution page
  55. Mr Gauthier Houlmont (ULiège)
    Poster Session
    poster

    In the context of the third-generation gravitational wave detector design, several noises must be understood and minimized. One of them is thermal noise, described theoretically by the Fluctuation and Dissipation Theorem (FDT).

    This study aims to describe the impact of introducing a radiative heat exchanger in terms of thermal noise. While thermal noise has been assessed for classical...

    Go to contribution page
  56. Nico Wagner
    Poster Session
    poster

    Crystalline AlGaAs/GaAs coatings are a promising low-noise material candidate for high-precision optical metrology due to their low mechanical loss. However, recent studies have revealed excess Brownian thermal noise in optical cavities, which appears to be linked to photoinduced effects. Additionally, there are indications that illumination influences the mechanical loss in GaAs, leading to...

    Go to contribution page
  57. Mr Juan Andrés Montenegro Folleco (RWTH Aachen University & Università di Padova)
    Poster Session
    poster

    The Einstein Telescope (ET) is a planned third-generation underground gravitational-wave observatory with unprecedented sensitivity. This sensitivity makes ET particularly vulnerable to environmental disturbances, especially seismic noise and the associated Newtonian noise. Characterizing anthropogenic seismic noise is therefore essential for site selection and detector design. Here, we...

    Go to contribution page
  58. Mr Vincent Wodtke (University of Hamburg)
    Poster Session
    poster

    Seismic noise, the vibration of the terrestrial environment, is an omnipresent problem for high precision experiments. Research facilities in urban areas must consider the local seismic noise floor,but even experiments in remote locations, especially highly sensitive gravitational wave detectors, require good compensation for seismic noise. As part of the project SeiSmart, we are working on...

    Go to contribution page
  59. Gobind Kumar
    Poster Session
    poster

    The low frequency Einstein Telescope (ET) is designed to operate at cryogenic temperatures and at a wavelength of 1550 nm. These new operating conditions, compared to current detectors, require the use of new materials, with silicon currently being the leading candidate for the main mirror substrates. However, possible birefringence in mirror substrates introduces additional contrast defect...

    Go to contribution page
  60. Jonathan Kuckert (III. Physikalisches Institut A; RWTH Aachen University)
    Poster Session
    poster

    Newtonian Noise (NN) is the predicted dominant noise source for gravita-
    tional wave measurements with the Einstein Telescope at low frequencies. As a
    gravitational phenomenon, NN cannot be shielded. The most promising miti-
    gation strategy is based on seismometer arrays. Wiener filters were proposed as
    a standard solution to predict NN from seismometer data in the past. Based...

    Go to contribution page
  61. Dr Hadrien Michael (Univ of Liège)
    poster only

    Towards Realistic Newtonian Noise Estimation for the Einstein Telescope in the EMR

    Newtonian Noise (NN) is expected to be one of the main factors limiting the sensitivity of ET-LF. However, producing accurate estimates of it remains difficult. Reliable NN predictions require subsurface and seismic wavefield models that are as realistic as possible.
    This work describes the current state of...

    Go to contribution page
  62. Kyrill Emanuel Blümer (Institut für Kernphysik Münster, AG Kappes)
    Poster Session
    poster

    Seismic noise at frequencies below 10 Hz is a fundamental sensitivity limit for ground-based gravitational wave detectors. The Einstein Telescope's underground location reduces
    but does not eliminate low-frequency ground motion, making active seismic isolation of the suspended test masses essential. We present a two-stage learned pipeline for seismic noise cancellation:
    a predictive model...

    Go to contribution page
  63. Oliver Gerberding (University of Hamburg)
    Poster Session
    poster

    In recent experiments we have demonstrated that tunable coherence interferometry is a viable technique to provide significant scattered light suppression at low frequencies in table-top implementations of Michelson, Sagnac and power-recycled Michelson interferometers. While our findings open up various opportunities, they are not sufficient to decide if this technique is actually applicable to...

    Go to contribution page
  64. Tobias Schoon (Maastricht University & Nikhef)
    Poster Session
    poster

    The low-frequency interferometer of the proposed Einstein Telescope (ET-LF) will employ cryogenically cooled silicon test masses to reduce thermal noise. Silicon, however, strongly absorbs the currently well-established laser wavelength of 1064 nm, motivating the investigation of alternative wavelengths such as 1550 nm.

    This change introduces challenges for interferometer control and lock...

    Go to contribution page
  65. Gianluca Inguglia (MBI - Austrian Academy of Sciences)
    Poster Session
    poster

    We present a study of deep convolutional autoencoders applied to anomaly detection of GW signals. This initial work focuses on short-duration signals (< 2s), corresponding to mergers that involve, or form, intermediate mass black holes. These burst-like signals are notably difficult to disentangle from both background noise and glitches that may occur during data taking. We utilize the...

    Go to contribution page
  66. Markus Schulz-Ritz (Karlsruhe Institute for Technology)
    Poster Session
    poster

    The mirrors of the low frequency interferometer of the Einstein Telescope will be cooled to cryogenic temperatures in order to mitigate thermal noise. At these temperatures residual gas freezes onto the mirror, forming a layer of ice. This icy layer will affect the sensitivity but also the cooling power of ET. Hence R&D measurements at cryogenic temperatures are conducted. These measurements...

    Go to contribution page
  67. Prof. Celine Hadziioannou (University of Hamburg)
    Poster Session
    poster

    The WAVE seismic network is a dense, multi-instrument monitoring system deployed on a scientific campus in Hamburg, Germany. It combines seismometers, geophones, and a 26 km distributed acoustic sensing fiber loop installed in existing telecommunication infrastructure. The network covers large-scale research facilities including the European X-ray Free-Electron Laser (EuXFEL) and particle...

    Go to contribution page
Building timetable...