Improving the data quality of Advanced LIGO based on early engineering run results
The Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors have completed their initial upgrade phase and will enter the first observing run in late 2015, with detector sensitivity expected to improve in future runs. Through the combined efforts of on-site commissioners and the Detector Characterization Group of the LIGO Scientific Collaboration, interferometer performance, in terms of data quality, at both LIGO observatories has vastly improved from the start of commissioning efforts to present. Advanced LIGO has already surpassed Enhanced LIGO in sensitivity, and the rate of noise transients, which would negatively impact astrophysical searches, has improved. Here we give details of some of the work which has taken place to better the quality of the LIGO data ahead of the first observing run.
© 2015 IOP Publishing Ltd. Received 28 August 2015, revised 14 October 2015. Accepted for publication 26 October 2015. Published 1 December 2015. The authors would like to thank Gabriela González, Peter Saulson and David Shoemaker for useful discussions throughout the writing of this paper. LKN was supported by the College of Arts and Sciences at Syracuse University, TJM and RPF were supported by NSF award PHY-1205835 and DMM by NSF award PHY-1104371. JRS was supported by NSF CAREER 1255650. ARW was supported by the UK Science and Technology Facilities Council through grants ST/K501931/1 and ST/L000962/1. Some calculations were performed on the ORCA cluster supported by NSF award PHY-1429873. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation, and operates under cooperative agreement PHY-0757058. aLIGO was built under award PHY-0823459. This paper has the LIGO Document Number LIGO-P1500131.
Submitted - 1508.07316v1.pdf