Footnote:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Description:
Operating a gravitational wave detector requires a suite of high-performance inertial and displacement sensors. These sensors are part of a complex control system which isolates optics from seismic disturbances. Despite the state-of-the-art sensors deployed in current gravitational wave detectors, noise from the control system continues to be a problem for the Laser Interferometric Gravitational Wave Observatories (LIGO). This problem will worsen for the next generation of terrestrial gravitational wave detectors and, hence, needs technological developments in all sensing and control scheme aspects. One of these needs is for better precision inertial sensors in places that currently can not be probed, such as the suspension chains of the optics. We therefore need to develop high precision, compact inertial sensors. Compact inertial sensors have limited test masses and higher resonance frequencies than their bulkier equivalents. Both of these degrade the performance of the sensors. In order to counteract this effect, a high mechanical Quality factor (Q factor) is required. High Q factors can be achieved with fused silica oscillators but require careful design of test mass suspensions to produce useful oscillation modes. Furthermore, to make a good inertial sensor, these oscillators must be integrated with a precise method of reading out the inertial motion of the test mass. This thesis discusses the design and testing of such compact inertial sensors. Part I of this thesis begins with a discussion of inertial sensor design. The noise terms of relevance to these sensors are evaluated for their mechanical behaviours. The effect of every design parameter on the mechanical behaviour of oscillators is calculated using a combination Finite Element Analysis and analytical modeling. The responses to these design parameter changes can then be used to optimise the mechanical behaviours for noise performance. Part II explores the development and testing of sensors. This part covers both the oscillating optic and optical ...