The Advanced LIGO timing system
Abstract
Gravitational wave detection using a network of detectors relies upon the precise time stamping of gravitational wave signals. The relative arrival times between detectors are crucial, e.g. in recovering the source direction, an essential step in using gravitational waves for multi-messenger astronomy. Due to the large size of gravitational wave detectors, timing at different parts of a given detector also needs to be highly synchronized. In general, the requirement toward the precision of timing is determined such that, upon detection, the deduced (astro-) physical results should not be limited by the precision of timing. The Advanced LIGO optical timing distribution system is designed to provide UTC-synchronized timing information for the Advanced LIGO detectors that satisfies the above criterium. The Advanced LIGO timing system has modular structure, enabling quick and easy adaptation to the detector frame as well as possible changes or additions of components. It also includes a self-diagnostics system that enables the remote monitoring of the status of timing. After the description of the Advanced LIGO timing system, several tests are presented that demonstrate its precision and robustness.
Additional Information
© 2010 IOP Publishing Ltd. Received 25 November 2009, in final form 22 December 2009. Published 6 April 2010. The authors would like to thank Keith Thorne, David Strom and Raymond Frey for their valuable comments.Attached Files
Published - Bartos2010p11577Classical_Quant_Grav.pdf
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- Eprint ID
- 20471
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- CaltechAUTHORS:20101021-144750192
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2010-11-30Created from EPrint's datestamp field
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2022-07-12Created from EPrint's last_modified field