Sensors and Actuators for the Advanced LIGO+ Upgrade
S J Cooper, C M Mow-Lowry, D Hoyland, J Bryant, A Ubhi, J O'Dell, A, Huddart, S Aston, A Vecchio
TL;DR
This paper details the development and testing of advanced sensors and actuators, specifically BOSEM devices, for the LIGO+ upgrade, achieving improved noise performance for gravitational wave detection.
Contribution
It introduces improved sensors and electronics tailored for the LIGO+ upgrade, enhancing the performance of optical suspension interrogation systems.
Findings
Achieved sensor noise level of 4.5×10⁻¹¹ m/√Hz at 1 Hz
Developed integrated electromagnetic actuators (BOSEMs) for LIGO
Enhanced testing procedures for sensor performance
Abstract
As part of the Advanced LIGO+ (A+) project we have developed, produced, and characterised sensors and electronics to interrogate new optical suspensions. The central element is a displacement sensor with an integrated electromagnetic actuator known as a BOSEM and its readout and drive electronics required to integrate them into LIGO's control and data system. In this paper we report on improvements to the sensors and testing procedures undertaken to meet enhanced performance requirements set out by the A+ upgrade to the detectors. The best devices reach a noise level of at a measurement frequency of 1 Hz.
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Taxonomy
TopicsAdaptive optics and wavefront sensing · Optical Systems and Laser Technology · Advanced Measurement and Metrology Techniques