A5086557403- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- High-pressure geophysics and materials
- Astrophysics and Cosmic Phenomena
- Geophysics and Sensor Technology
- Statistical and numerical algorithms
- Seismic Waves and Analysis
- Atomic and Subatomic Physics Research
- Astronomical Observations and Instrumentation
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic confinement fusion research
- Radio Astronomy Observations and Technology
- Black Holes and Theoretical Physics
- Mechanical and Optical Resonators
- Adaptive optics and wavefront sensing
- Superconducting Materials and Applications
- Advanced Frequency and Time Standards
- Dark Matter and Cosmic Phenomena
- earthquake and tectonic studies
- Calibration and Measurement Techniques
- Photonic and Optical Devices
- Advanced Electrical Measurement Techniques
National Institute for Subatomic Physics
2019-2024
Ghent University
2022-2024
Université Paris Cité
2023
Laboratoire AstroParticule et Cosmologie
2023
Centre National de la Recherche Scientifique
2023
University of Glasgow
2015-2021
European Gravitational Observatory
2019
The Einstein Telescope is Europe’s next generation gravitational-wave detector. To develop all necessary technology, four research facilities have emerged across Europe: Amaldi Research Center (ARC) in Rome (Italy), ETpathfinder Maastricht (The Netherlands), SarGrav the Sos Enattos mines on Sardinia (Italy) and E-TEST Liége (Belgium) its surroundings. ARC pursues investigation of a large cryostat, equipped with dedicated low-vibration cooling lines, to test full-scale cryogenic payloads....
The speed meter concept has been identified as a technique that can potentially provide laser-interferometric measurements at sensitivity level which surpasses the standard quantum limit (SQL) over broad frequency range. As with other sub-SQL measurement techniques, losses play central role in interferometers and they ultimately determine noise limited be achieved. So far literature, only derived for lossless or lossy cases using certain approximations (for instance arm cavity round trip...
The third-generation of gravitational wave observatories, such as the Einstein Telescope (ET) and Cosmic Explorer (CE), aim for an improvement in sensitivity at least a factor ten over wide frequency range compared to current advanced detectors. In order inform design detectors develop qualify their subsystems, dedicated test facilities are required. ETpathfinder prototype uses full interferometer configurations aims provide high facility similar environment ET. Along with interferometry...
This study investigates the effects of space environmental radiation on performance In <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.53</sub> Ga xmlns:xlink="http://www.w3.org/1999/xlink">0.47</sub> As Quadrant Photodiodes (QPDs) and assesses their suitability for Laser Interferometer Space Antenna (LISA) mission. QPDs 1.0 mm, 1.5 2.0 mm diameter were irradiated with 20 60 MeV protons, 0.5 1 electrons, Co...
The Sagnac speed metre topology has been identified as a promising technique to reduce quantum back-action in gravitational-wave interferometers. However, imbalance of the main beamsplitter shown increase coupling laser noise detection port, thus reducing superiority metre, compared conventional approaches, particular at low frequencies. In this paper, we show that by implementing balanced homodyne readout scheme with suitable choice point from which local oscillator (LO) is derived, excess...
The Sagnac speed meter interferometer topology can potentially provide enhanced sensitivity to gravitational waves in the audio-band compared equivalent Michelson interferometers. A challenge with arises from intrinsic lack of at low frequencies where velocity-proportional signal is smaller than noise associated sensing signal. Using as an example on-going proof-of-concept experiment Glasgow, we quantify problem and present a solution involving extraction small displacement-proportional This...
This study investigates the effects of space environmental radiation on performance InGaAs Quadrant Photodiodes (QPDs) and assesses their suitability for Laser Interferometer Space Antenna (LISA) mission. QPDs 1.0, 1.5 2.0 mm have been irradiated with 20 60 MeV protons, 0.5 1 electrons, Co$^{60}$ gamma. An exposure corresponding to a displacement damage equivalent fluence $1.0 \times 10^{+12}$ p/cm$^2$ protons total ionizing dose 237 krad were applied, surpassing anticipated levels LISA...