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arXiv 1202.2732gr-qc
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探路者LISA机载磁诊断单元的设计

Design of the magnetic diagnostics unit onboard LISA Pathfinder

Marc Diaz-Aguiló, Ignacio Mateos, Juan Ramos-Castro, Alberto Lobo, Enrique García-Berro

摘要:

LISA(Laser Interferometer Space Antenna)是欧空局和美国宇航局(NASA)的一项联合任务,旨在成为第一个星载引力波观测站。由于LISA将面临的高度复杂性和技术挑战,欧空局决定发射一个技术演示器,LISA探路者。LISA Pathfinder的有效载荷是所谓的LISA技术包,将是迄今为止飞行的最高灵敏度的测地探测器。LISA技术包设计用于测量标称自由降落(测地线运动)中两个试验质量之间的相对加速度。影响有效载荷的磁、热和辐射干扰由诊断子系统监测和处理。诊断子系统由几个模块组成,其中之一是磁诊断单元。其主要功能是评估由于磁效应引起的试验质量之间的差分加速度噪声。为此,它必须确定测试质量的磁特性,即它们的剩磁和磁化率。在本文中,我们将展示如何实现所需的精度。

英文摘要:

LISA (Laser Interferometer Space Antenna) is a joint mission of ESA and NASA which aims to be the first space-borne gravita- tional wave observatory. Due to the high complexity and technological challenges that LISA will face, ESA decided to launch a technological demonstrator, LISA Pathfinder. The payload of LISA Pathfinder is the so-called LISA Technology Package, and will be the highest sensitivity geodesic explorer flown to date. The LISA Technology Package is designed to measure relative accelerations between two test masses in nominal free fall (geodesic motion). The magnetic, thermal and radiation disturbances affecting the payload are monitored and dealt by the diagnostics subsystem. The diagnostics subsystem consists of several modules, and one of these is the magnetic diagnostics unit. Its main function is the assessment of differential acceleration noise between test masses due to the magnetic effects. To do so, it has to determine the magnetic characteristics of the test masses, namely their magnetic remanences and susceptibilities. In this paper we show how this can be achieved to the desired accuracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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