Effects of temperature variations in high sensitivity Sagnac gyroscope
Andrea Basti, Nicolò Beverini, Filippo Bosi, Giorgio Carelli, Donatella Ciampini, Angela D. V. Di Virgilio, Francesco Fuso, Umberto Giacomelli, Enrico Maccioni,… 展开作者
Andrea Basti, Nicolò Beverini, Filippo Bosi, Giorgio Carelli, Donatella Ciampini, Angela D. V. Di Virgilio, Francesco Fuso, Umberto Giacomelli, Enrico Maccioni, Paolo Marsili, Giuseppe Passeggio, Alberto Porzio, Andreino Simonelli, Giuseppe Terreni
GINGERINO is one of the most sensitive Sagnac laser-gyroscope based on an heterolithic mechanical structure. It is a prototype for GINGER, the laser gyroscopes array proposed to reconstruct the Earth rotation vector and in this way to measure General Relativity effects. Many factors affect the final sensitivity of laser gyroscopes, in particular, when they are used in long term measurements, slow varying environmental parameters come into play. To understand the role of different terms allows to design more effective mechanical as well as optical layouts, while a proper model of the dynamics affecting long term (low frequency) signals would increase the effectiveness of the data analysis for improving the overall sensitivity. In this contribution we focus our concerns on the effects of room temperature and pressure aiming at further improving mechanical design and long term stability of the apparatus. Our data are compatible with a local orientation changes of the Gran Sasso site below $μ$rad as predicted by geodetic models. This value is, consistent with the requirements for GINGER and the installation of an high sensitivity Sagnac gyroscope oriented at the maximum signal, \textit{i.e.} along the Earth rotation axes.
Vector field dark matter search with Sagnac interferometer
National Central University（中央大学）；Center for High Energy and High Field (CHiP), National Central University（高能高场中心）；Institute of Physics, Academia Sinica（中央研究院物理研究所）；Institute of Particle and Nuclear Studies, High Energy Acceleration Research Organization (KEK)（高能加速器研究机构粒子核研究部）；Phenikaa University（菲尼亚卡大学）；Department of Physics, Rikkyo University（立教大学物理系）；Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), WPI, UTIAS, The University of Tokyo（东京大学理学院宇宙线物质宇宙国际研究教育中心）
