From laboratory experiments to LISA Pathfinder: achieving LISA geodesic motion

Antonucci, F.; Armano, M.; Audley, H.; Auger, G.; Benedetti, M.; Binétruy, P.; Boatella, C.; Bogenstahl, J.; Bortoluzzi, D.; Bosetti, Paolo; Brandt, N.; Caleno, M.; Cavalleri, A.; Cesa, M.; Chmeissani, M.; Ciani, G.; Conchillo, A.; Congedo, G.; Cristofolini, I.; Cruise, M.; Danzmann, K.; Marchi, Fabrizio De; Diaz‐Aguiló, Marc; Diepholz, I.; Dixon, G. J.; Dolesi, R.; Dunbar, N.; Fauste, Jorge; Ferraioli, L.; Fertin, D.; Fichter, Walter; Fitzsimons, E.; Freschi, M.; Marin, A García; Marirrodriga, C. García; Gerndt, R.; Gesa, L.; Giardini, Domenico; Gibert, F.; Grimani, C.; Grynagier, A.; Guillaume, Bernard; Guzmán, F.; Harrison, I.; Heinzel, Gerhard; Hewitson, M.; Hollington, D.; Hough, J.; Hoyland, D.; Hueller, M.; Huesler, J.; Jeannin, Olivier; Jennrich, O.; Jetzer, Philippe; Johlander, B.; Killow, C. J.; Llamas, Xavier; Lloro, I.; Lobo, Alberto; Maarschalkerweerd, R.; Madden, S.; Mance, D.; Mateos, I.; McNamara, P. W.; Mendes, José F. G.; Mitchell, E.; Monsky, A.; Nicolini, Davide; Nicolodi, Daniele; Nofrarias, M.; Pedersen, Finn; Perreur-Lloyd, M.; Perreca, A.; Plagnol, E.; Prat, P.; Racca, G. D.; Raïs, B.; Ramos‐Castro, J.; Reiche, J.; Pérez, José Antonio; Robertson, D. I.; Rozemeijer, H.; Sanjuán, Jose; Schleicher, A.; Schulte, M.; Shaul, D.; Stagnaro, L.; Strandmoe, S.; Steier, Frank; Sumner, T. J.; Taylor, A.; Texier, D.; Trenkel, C.; Tombolato, D.; Vitale, S.; Wanner, Gudrun; Ward, H.; Waschke, S.; Wass, Peter; Weber, William J.; Zweifel, Peter

doi:10.1088/0264-9381/28/9/094002

Cited by 69 publications

(67 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A given relative fluctuation in an applied actuation voltage on one electrode produces a force fluctuation that is proportional to the magnitude of applied force from that electrode. As such, a higher level of force and torque authority corresponds to a higher force noise induced by the actuation subsystem because of in-band amplitude voltage fluctuations [2]. Throughout the mission, different levels of force and torque authority were introduced.…”

Section: B Analysis Of the Complete Dataset Of System Identificationmentioning

confidence: 99%

“…The LISA Pathfinder satellite [1,2] (LPF) was a technology demonstrator for future space-borne Gravi- * Electronic address: karnesis@aei.mpg.de † Electronic address: daniele.vetrugno@unitn.it tational Wave (GW) observatories, such as LISA [3]. It aimed to measure the relative displacement ∆x(t) between two freely falling test masses using heterodyne laser interferometry, and to demonstrate that the fluctuations of the differential stray force per unit mass, ∆g(t), acting on the two TMs in their nominal positions were below 30 fm s −2 / √ Hz in the millihertz frequency band.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Calibrating the system dynamics of LISA Pathfinder

Armano¹,

Audley²,

Baird³

et al. 2018

Phys. Rev. D

View full text Add to dashboard Cite

LISA Pathfinder (LPF) was a European Space Agency mission with the aim to test key technologies for future space-borne gravitational-wave observatories like LISA. The main scientific goal of LPF was to demonstrate measurements of differential acceleration between free-falling test masses at the sub-femto-g level, and to understand the residual acceleration in terms of a physical model of stray forces, and displacement readout noise. A key step towards reaching the LPF goals was the correct calibration of the dynamics of LPF, which was a three-body system composed by two testmasses enclosed in a single spacecraft, and subject to control laws for system stability. In this work, we report on the calibration procedures adopted to calculate the residual differential stray force per unit mass acting on the two test-masses in their nominal positions. The physical parameters of the adopted dynamical model are presented, together with their role on LPF performance. The analysis and results of these experiments show that the dynamics of the system was accurately modeled and the dynamical parameters were stationary throughout the mission. Finally, the impact and importance of calibrating system dynamics for future space-based gravitational wave observatories is discussed.

show abstract

Section: B Analysis Of the Complete Dataset Of System Identificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Calibrating the system dynamics of LISA Pathfinder

Armano¹,

Audley²,

Baird³

et al. 2018

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…LISA Pathfinder [1,2,8,9] (LPF) is an European Space Agency mission dedicated to the demonstration of free-fall of a TM to the level required for the implementation of the future space-borne gravitational wave (GW) observatory, LISA [3] (Laser Interferometer Space Antenna). Moving to space is advantageous for a GW observatory as there is no seismic gravitational noise that limits the low frequency sensitivity of the ground based GW observatories.…”

Section: Introductionmentioning

confidence: 99%

Capacitive sensing of test mass motion with nanometer precision over millimeter-wide sensing gaps for space-borne gravitational reference sensors

Armano¹,

Audley²,

Auger³

et al. 2017

Phys. Rev. D

View full text Add to dashboard Cite

Capacitive sensing of test mass motion with nanometer precision over millimeter-wide sensing gaps for space-borne gravitational reference sensors. Physical Review D, 96(6), 062004.There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.http://eprints.gla.ac.uk/148989/ We report on the performance of the capacitive gap-sensing system of the Gravitational Reference Sensor (GRS) onboard the LISA Pathfinder (LPF) spacecraft. From in-flight measurements, the system has demonstrated a performance, down to 1 mHz, that is ranging between 0.7 aF Hz −1/2 and 1.8 aF Hz −1/2 . That translates into a sensing noise of the test mass motion within 1.2 nm Hz −1/2 and 2.4 nm Hz −1/2 in displacement and within 83 nrad Hz −1/2 and 170 nrad Hz −1/2 in rotation. This matches the performance goals for LPF and it allows the successful implementation of the gravitational waves observatory LISA. A 1/f tail has been observed for frequencies below 1 mHz, the tail has been investigated in detail with dedicated in-flight measurements and a model is presented in the paper. A projection of such noise to frequencies below 0.1 mHz shows that an improvement of performance at those frequencies is desirable for the next generation of GRS sensors for space-borne gravitational waves observation. 2PACS numbers: 04.80. Nn, 95.55.Ym

show abstract

“…1,7,8 The spacecraft jitter caused by the non-conservative forces, such as solar wind, solar radiation, cosmic rays, etc., can be suppressed by the disturbance reduction system. 16,17 But the residual attitude dynamics of the spacecraft and the Proof Mass will even result in the jitter of transmitting light. After 1 × 10 6 km spreading, the transmitting light received by local spacecraft is mixed with local laser and the beat-note signal is detected by the photo-detector.…”

Section: Introductionmentioning

confidence: 99%

Methodological demonstration of laser beam pointing control for space gravitational wave detection missions

Dong

Liu

Luo

et al. 2014

Review of Scientific Instruments

View full text Add to dashboard Cite

In space laser interferometer gravitational wave (G.W.) detection missions, the stability of the laser beam pointing direction has to be kept at 10 nrad/√Hz. Otherwise, the beam pointing jitter noise will dominate the noise budget and make the detection of G.W. impossible. Disturbed by the residue non-conservative forces, the fluctuation of the laser beam pointing direction could be a few μrad/√Hz at frequencies from 0.1 mHz to 10 Hz. Therefore, the laser beam pointing control system is an essential requirement for those space G.W. detection missions. An on-ground test of such beam pointing control system is performed, where the Differential Wave-front Sensing technique is used to sense the beams pointing jitter. An active controlled steering mirror is employed to adjust the beam pointing direction to compensate the jitter. The experimental result shows that the pointing control system can be used for very large dynamic range up to 5 μrad. At the interested frequencies of space G.W. detection missions, between 1 mHz and 1 Hz, beam pointing stability of 6 nrad/√Hz is achieved.

show abstract

From laboratory experiments to LISA Pathfinder: achieving LISA geodesic motion

Cited by 69 publications

References 25 publications

Calibrating the system dynamics of LISA Pathfinder

Calibrating the system dynamics of LISA Pathfinder

Capacitive sensing of test mass motion with nanometer precision over millimeter-wide sensing gaps for space-borne gravitational reference sensors

Methodological demonstration of laser beam pointing control for space gravitational wave detection missions

Contact Info

Product

Resources

About