Improving LIGO calibration accuracy by tracking and compensating for slow temporal variations

Tuyenbayev, D. and Karki, S. and Betzwieser, J. and Cahillane, C. and Goetz, E. and Izumi, K. and Kandhasamy, S. and Kissel, J. S. and Mendell, G. and Wade, M. and Weinstein, A. J. and Savage, R. L. (2017) Improving LIGO calibration accuracy by tracking and compensating for slow temporal variations. Classical and Quantum Gravity, 34 (1). Art. No. 015002. ISSN 0264-9381. doi:10.1088/0264-9381/34/1/015002. https://resolver.caltech.edu/CaltechAUTHORS:20170112-122943086

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Abstract

Calibration of the second-generation LIGO interferometric gravitational-wave detectors employs a method that uses injected periodic modulations to track and compensate for slow temporal variations in the differential length response of the instruments. These detectors utilize feedback control loops to maintain resonance conditions by suppressing differential arm length variations. We describe how the sensing and actuation functions of these servo loops are parameterized and how the slow variations in these parameters are quantified using the injected modulations. We report the results of applying this method to the LIGO detectors and show that it significantly reduces systematic errors in their calibrated outputs.

Item Type:

Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1088/0264-9381/34/1/015002	DOI	Article
http://iopscience.iop.org/article/10.1088/0264-9381/34/1/015002/meta	Publisher	Article
https://arxiv.org/abs/1608.05134	arXiv	Discussion Paper

ORCID:

Author	ORCID
Izumi, K.	0000-0003-3405-8334
Kissel, J. S.	0000-0002-1702-9577
Weinstein, A. J.	0000-0002-0928-6784

Additional Information:

© 2016 IOP Publishing Ltd. Received 8 August 2016, revised 21 October 2016; Accepted for publication 1 November 2016; Published 6 December 2016. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation (NSF) and operates under cooperative agreement PHY-0757058. This work was supported by the following NSF grants: HRD-1242090 for D Tuyenbayev, PHY-1607336 for S Karki, PHY-1404139 for S Kandhasamy and PHY-1607178 for M Wade. Fellowship support for S Karki and D Tuyenbayev from the LIGO Laboratory and for D Tuyenbayev from the UTRGV College of Sciences are also gratefully acknowledged. This paper carries LIGO Document Number LIGO-P1600063.

Group:

LIGO

Funders:

Funding Agency	Grant Number
NSF	PHY-0757058
NSF	HRD-1242090
NSF	PHY-1607336
NSF	PHY-1404139
NSF	PHY-1607178
LIGO Laboratory	UNSPECIFIED
UTRGV College of Sciences	UNSPECIFIED

Other Numbering System:

Other Numbering System Name	Other Numbering System ID
LIGO Document	LIGO-P1600063

Issue or Number:

DOI:

10.1088/0264-9381/34/1/015002

Record Number:

CaltechAUTHORS:20170112-122943086

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20170112-122943086

Official Citation:

D Tuyenbayev et al 2017 Class. Quantum Grav. 34 015002

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

73475

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

18 Jan 2017 20:46

Last Modified:

12 Jul 2022 19:51

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