Position sensors for LISA drag-free control
2002; IOP Publishing; Volume: 19; Issue: 7 Linguagem: Inglês
10.1088/0264-9381/19/7/371
ISSN1361-6382
AutoresW. J. Weber, A. Cavalleri, R. Dolesi, Giorgio Fontana, M. Hueller, S. Vitale,
Tópico(s)Magnetic confinement fusion research
ResumoThe extreme level of isolation from stray forces required for LISA makes the development of 'drag-free control' technologies essential to the mission. We report here on the progress in the development of a capacitive, six degree-of-freedom, position sensor designed to meet the required low levels of position read-out noise (1 nm Hz−1/2) and stray force noise (3 × 10−15 N Hz−1/2) across the LISA bandwidth of 0.1 mHz to 0.1 Hz. In this paper we briefly discuss sensor design and expected performance before presenting preliminary noise measurements made with a prototype sensor.
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