LISA pathfinder performance confirmed in an open-loop configuration: results from the free-fall actuation mode
File(s)PhysRevLett.123.111101.pdf (739.04 KB)
Published version
OA Location
Author(s)
Type
Journal Article
Abstract
We report on the results of the LISA Pathfinder (LPF) free-fall mode experiment, in which the control force needed to compensate the quasistatic differential force acting on two test masses is applied intermittently as a series of “impulse” forces lasting a few seconds and separated by roughly 350 s periods of true free fall. This represents an alternative to the normal LPF mode of operation in which this balancing force is applied continuously, with the advantage that the acceleration noise during free fall is measured in the absence of the actuation force, thus eliminating associated noise and force calibration errors. The differential acceleration noise measurement presented here with the free-fall mode agrees with noise measured with the continuous actuation scheme, representing an important and independent confirmation of the LPF result. An additional measurement with larger actuation forces also shows that the technique can be used to eliminate actuation noise when this is a dominant factor.
Date Issued
2019-09-11
Date Acceptance
2019-09-01
Citation
Physical Review Letters, 2019, 123 (11), pp.111101-1-111101-7
ISSN
0031-9007
Publisher
American Physical Society
Start Page
111101-1
End Page
111101-7
Journal / Book Title
Physical Review Letters
Volume
123
Issue
11
Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further
distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Sponsor
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000485202800003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/R001871/1
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
Publication Status
Published
Article Number
ARTN 111101
Date Publish Online
2019-09-11