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LISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation Mode
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2019, 123 (11), pp.111101. ⟨10.1103/PhysRevLett.123.111101⟩, Phys.Rev.Lett., Phys.Rev.Lett., 2019, 123 (11), pp.111101. ⟨10.1103/PhysRevLett.123.111101⟩, Physical review letters, 111101-7, 111101-1, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Physical Review Letters 123 (2019), Nr. 11, Recercat. Dipósit de la Recerca de Catalunya, instname
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
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. © 2019 authors. Published by the American Physical Society.
- Subjects :
- General Physics
Physics, Multidisciplinary
FOS: Physical sciences
General Physics and Astronomy
Actuation noise
Impulse (physics)
Gravitation and Astrophysics
01 natural sciences
LISA Pathfinder
Article
Atomic physics
Gravitational waves
Física::Electromagnetisme::Radiació infraroja, visible i ultraviolada [Àrees temàtiques de la UPC]
Physics - Space Physics
Ones gravitacionals
Control theory
Force calibration
0103 physical sciences
ddc:530
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Physics
Science & Technology
02 Physical Sciences
Noise measurement
Gravitational wave
Noise measurements
article
Open-loop controller
noise measurement
Dominant factor
acceleration
Space physics
calibration
Space Physics (physics.space-ph)
Pathfinder
Mode of operations
Physical Sciences
Differential accelerations
Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Open-loop configuration
Astrophysics - Instrumentation and Methods for Astrophysics
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Space probes
Quasistatic process
Subjects
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2019, 123 (11), pp.111101. ⟨10.1103/PhysRevLett.123.111101⟩, Phys.Rev.Lett., Phys.Rev.Lett., 2019, 123 (11), pp.111101. ⟨10.1103/PhysRevLett.123.111101⟩, Physical review letters, 111101-7, 111101-1, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Physical Review Letters 123 (2019), Nr. 11, Recercat. Dipósit de la Recerca de Catalunya, instname
- Accession number :
- edsair.doi.dedup.....05d1b9fe23c2180c272ac28985e4d68a