Control of the laser frequency in the Virgo interferometer: Dynamic noise budgeting for controller optimization

IF 4.2 3区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astroparticle Physics Pub Date : 2024-08-08 DOI:10.1016/j.astropartphys.2024.103028

Mathyn van Dael , Julia Casanueva , Gert Witvoet , Bas Swinkels , Diego Bersanetti , Manuel Pinto , Paolo Ruggi , Maddalena Mantovani , Camilla de Rossi , Piernicola Spinicelli , Mattia Boldrini , Tom Oomen

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Abstract

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 $H_{2}$ 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.

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控制室女座干涉仪的激光频率：用于控制器优化的动态噪声预算

本文以室女座干涉仪中的激光稳频环路（一个复杂的嵌套反馈系统）为实验案例，介绍了推导噪声预算以及随后用于优化控制设计的框架。首先，对系统动力学和噪声源进行建模和实验验证，以得出噪声预算，然后利用 H2 准则制定优化问题，并根据探测器的具体设计要求进行调整。合成控制器的结构随后被用于改进控制设计。在室女座干涉仪上对所开发的控制器进行的实验验证表明，均方根误差大约减少了 3 倍，这说明了所介绍方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astroparticle Physics 地学天文-天文与天体物理

CiteScore

8.00

自引率

2.90%

发文量

审稿时长

79 days

期刊介绍： Astroparticle Physics publishes experimental and theoretical research papers in the interacting fields of Cosmic Ray Physics, Astronomy and Astrophysics, Cosmology and Particle Physics focusing on new developments in the following areas: High-energy cosmic-ray physics and astrophysics; Particle cosmology; Particle astrophysics; Related astrophysics: supernova, AGN, cosmic abundances, dark matter etc.; Gravitational waves; High-energy, VHE and UHE gamma-ray astronomy; High- and low-energy neutrino astronomy; Instrumentation and detector developments related to the above-mentioned fields.