Analysis of 90 day operation of the GINGERINO gyroscope

Belfi J.; Beverini N.; Carelli G.; Di Virgilio A.; Giacomelli U.; Maccioni E.; Simonelli A.; Stefani F.; Terreni G.

摘要

Gyroscopes IN GEneral Relativity (GINGER) is a proposed experiment with the aim of measuring in a ground laboratory the gravitoelectric and gravitomagnetic effects foreseen by general relativity through an array of ring laser gyroscopes. GINGERINO is a square ring-laser prototype that has been built to investigate the level of noise inside the Gran Sasso underground laboratory. GINGERINO has shown the advantage of the underground location. Now it provides suitable data for geophysics and seismology. Since May 2017, it has continuously acquired data. The analysis of the first 90 days shows that the duty cycle is higher than 95%, and the quantum shot noise limit is of the order of 10(-10)(rad/s)/ root Hz. It is located in a seismically active area, and it recorded part of the central Italy earthquakes. Its high sensitivity in the frequency band of fraction of hertz makes it suitable for seismology studies. The main purpose of the present analysis is to investigate the long-term response of the apparatus. Simple and fast routines to suppress the disturbances coming from the laser have been developed. The Allan deviation of the raw data reaches some 10(-6) after about 10(6) s of integration time, while the processed data show an improvement of 1 order of magnitude. Disturbances at the daily time scale are present in the processed data, and the expected signal induced by polar motion and solid Earth tides is covered by those disturbances. (C) 2018 Optical Society of America

机译：通用相对论（Ginger）的陀螺仪是一个提出的实验，目的是通过一般相对性通过环激光陀螺仪的一般相对性来测量墓穴的墓穴和重力效应。姜耳是一种方形环 - 激光原型，它是为调查Gran Sasso地下实验室内的噪音水平。姜耳廓显示了地下地点的优势。现在它为地球物理和地震学提供合适的数据。自2017年5月以来，它已持续获取数据。对前90天的分析表明占空比高于95％，量子射击噪声限制为10（-10）（Rad / S）/根Hz。它位于地震活动区域，它记录了意大利中部地震的一部分。它在赫兹频带频带中的高灵敏度使其适用于地震学研究。本分析的主要目的是研究该装置的长期响应。已经开发出简单快速的措施来抑制来自激光器的干扰。在整合时间约10（6）秒之后，原始数据的Allan偏差达到约10（6），而处理的数据显示出100级的提高。在处理数据中存在日常时间尺度的扰动，并且由极性运动和固体地球潮汐引起的预期信号被这些干扰覆盖。（c）2018年光学学会

Analysis of 90 day operation of the GINGERINO gyroscope

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