A5039425304- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Geophysics and Sensor Technology
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Astrophysical Phenomena and Observations
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Advanced Frequency and Time Standards
- Inertial Sensor and Navigation
- Advanced MEMS and NEMS Technologies
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- Mechanical and Optical Resonators
- Advanced Measurement and Metrology Techniques
- Atomic and Subatomic Physics Research
- Advanced Fiber Optic Sensors
- Sensor Technology and Measurement Systems
- Engineering Applied Research
- Adaptive optics and wavefront sensing
- 3D Modeling in Geospatial Applications
- Dark Matter and Cosmic Phenomena
- Architecture and Computational Design
- Astrophysics and Cosmic Phenomena
Vrije Universiteit Amsterdam
2022-2024
National Institute for Subatomic Physics
2022-2024
University of Birmingham
2022
University of Glasgow
2022
We demonstrate the control scheme of an active platform with a six degree freedom (6D) seismometer. The inertial sensor simultaneously measures translational and tilt degrees does not require any additional sensors for stabilization. show that feedforward cancelation can efficiently decouple tilt-to-horizontal coupling seismometer in digital scheme. stabilize frequency band from 250 mHz up to 10 Hz (X, Y) achieve suppression factor 100 around 1 Hz. Further ground vibrations was limited by...
Control noise is a limiting factor in the low-frequency performance of Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO). In this paper, we model effects using new sensors called Homodyne Quadrature Interferometers (HoQIs) to control suspension resonances. We show that if were use HoQIs, instead standard shadow sensors, could suppress resonance peaks up tenfold more while simultaneously reducing injected by damping system. Through cascade effects, will reduce resonant...
Homodyne Quadrature Interferometers (HoQIs) are compact, low noise and high dynamic range displacement sensors designed for use in gravitational wave observatories. Their lower compared to the used at present makes them valuable improving seismic isolation current future detectors. This paper outlines progression of this sensor from initial production benchtop tests in-vacuum static performance installation a detector prototype facility. A detailed design description is outlined, including...
We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from pair of 14 μm thick BeCu flexures. The angle between the and support structure is measured homodyne interferometers, which achieve noise level ∼5prad/Hz. entirely made vacuum compatible materials, center mass can be adjusted remotely.
We demonstrate the control scheme of an active platform with a six degree freedom (6D) seismometer. The inertial sensor simultaneously measures translational and tilt degrees does not require any additional sensors for stabilisation. show that feedforward cancellation can efficiently decouple tilt-to-horizontal coupling seismometer in digital scheme. stabilise frequency band from 250 mHz up to 10 Hz horizontal achieve suppression factor 100 around 1 Hz. Further ground vibrations was limited...
We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from pair of 14-${\mu}$m thick BeCu flexures. The angle between the and support structure is measured homodyne interferometers which achieve noise level $\sim 5\ \text{prad}/\sqrt{\text{Hz}}$. entirely made vacuum compatible materials center mass can be adjusted remotely.