LISA pathfinder performance confirmed in an open-loop configuration: results from the free-fall actuation mode
Visualitza/Obre
10.1103/PhysRevLett.123.111101
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/169565
Tipus de documentArticle
Data publicació2019-09-11
EditorAmerican Institute of Physics (AIP)
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
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.
CitacióArmano, M. [et al.]. LISA pathfinder performance confirmed in an open-loop configuration: results from the free-fall actuation mode. "Physical review letters", 11 Setembre 2019, vol. 123, núm. 11, p. 111101-1-111101-7.
ISSN0031-9007
Versió de l'editorhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.111101
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
PhysRevLett.123.111101.pdf | 828,7Kb | Visualitza/Obre |