TY - JOUR
T1 - Control of the laser frequency in the Virgo interferometer
T2 - Dynamic noise budgeting for controller optimization
AU - van Dael, Mathyn
AU - Casanueva, Julia
AU - Witvoet, Gert
AU - Swinkels, Bas
AU - Bersanetti, Diego
AU - Pinto, Manuel
AU - Ruggi, Paolo
AU - Mantovani, Maddalena
AU - de Rossi, Camilla
AU - Spinicelli, Piernicola
AU - Boldrini, Mattia
AU - Oomen, Tom
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2025/1
Y1 - 2025/1
N2 - This paper presents a framework for the derivation of a noise budget and the subsequent utilization in the optimization of the control design, using the laser frequency stabilization loop in the Virgo interferometer, which is a complex nested feedback system, as an experimental case study. First, the system dynamics and noise sources are modeled and experimentally verified to produce the noise budget, after which an optimization problem using the H2 norm is formulated and tailored to the specific design requirements for the detector. The structure of the synthesized controller is then used to produce an improved control design. Experimental verification of the developed controller on the Virgo interferometer shows roughly a factor 3 reduction in root-mean-square error, illustrating the effectiveness of the presented method.
AB - This paper presents a framework for the derivation of a noise budget and the subsequent utilization in the optimization of the control design, using the laser frequency stabilization loop in the Virgo interferometer, which is a complex nested feedback system, as an experimental case study. First, the system dynamics and noise sources are modeled and experimentally verified to produce the noise budget, after which an optimization problem using the H2 norm is formulated and tailored to the specific design requirements for the detector. The structure of the synthesized controller is then used to produce an improved control design. Experimental verification of the developed controller on the Virgo interferometer shows roughly a factor 3 reduction in root-mean-square error, illustrating the effectiveness of the presented method.
KW - Advanced Virgo Plus
KW - Gravitational Waves
KW - Laser frequency stabilization
KW - Noise budget
KW - Systematic control design
KW - ℋ synthesis
UR - http://www.scopus.com/inward/record.url?scp=85201261783&partnerID=8YFLogxK
U2 - 10.1016/j.astropartphys.2024.103028
DO - 10.1016/j.astropartphys.2024.103028
M3 - Article
AN - SCOPUS:85201261783
SN - 0927-6505
VL - 164
JO - Astroparticle Physics
JF - Astroparticle Physics
M1 - 103028
ER -