Overview of LIGO instrumentation

Frederick J. Raab

doi:10.1117/12.552891

29 September 2004 Overview of LIGO instrumentation

Frederick J. Raab

Proceedings Volume 5500, Gravitational Wave and Particle Astrophysics Detectors; (2004) https://doi.org/10.1117/12.552891
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

The Laser Interferometer Gravitational-Wave Observatory (LIGO) consists of detector facilities in Hanford, WA and Livingston, LA, USA, separated by 3000 km. Laser interferometry is used to monitor displacements of freely suspended mirrors, separated by 2 - 4 km, along perpendicular arms at each facility. The initial LIGO detector design sensitivity corresponds to measuring gravitational-wave induced differential displacements of order 1 millifermi over the 4-km arms. Progress in the commissioning and operation of these detectors will be reviewed.

Citation Download Citation

Frederick J. Raab "Overview of LIGO instrumentation", Proc. SPIE 5500, Gravitational Wave and Particle Astrophysics Detectors, (29 September 2004); https://doi.org/10.1117/12.552891

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