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  Experimental results from the ST7 mission on LISA Pathfinder

ST7 Team, Anderson, G., Anderson, J., Anderson, M., Aveni, G., Bame, D., et al. (2018). Experimental results from the ST7 mission on LISA Pathfinder. Physical Review D, 98(10): 102005. doi:10.1103/PhysRevD.98.102005.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-4B0D-D Version Permalink: http://hdl.handle.net/21.11116/0000-0003-47B1-5
Genre: Journal Article

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ST7 Team, Author              
Anderson, G, Author
Anderson, J, Author
Anderson, M, Author
Aveni, G, Author
Bame, D, Author
Barela, P, Author
Blackman, K, Author
Carmain, A, Author
Chen, L, Author
Cherng, M, Author
Clark, S, Author
Connally, M, Author
Connolly, W, Author
Conroy, D, Author
Cooper, M, Author
Cutler, C, Author
D'Agostino, J, Author
Demmons, N, Author
Dorantes, E, Author
Dunn, C, AuthorDuran, M, AuthorEhrbar, E, AuthorEvans, J, AuthorFernandez, J, AuthorFranklin, G, AuthorGirard, M, AuthorGorelik, J, AuthorHruby, V, AuthorHsu, O, AuthorJackson, D, AuthorJavidnia, S, AuthorKern, D, AuthorKnopp, M, AuthorKolasinski, R, AuthorKuo, C, AuthorLe, T, AuthorLi, I, AuthorLiepack, O, AuthorLittlefield, A, AuthorMaghami, P, AuthorMalik, S, AuthorMarkley, L, AuthorMartin, R, AuthorMarrese-Reading, C, AuthorMehta, J, AuthorMennela, J, AuthorMiller, D, AuthorNguyen, D, AuthorO'Donnell, J, AuthorParikh, R, AuthorPlett, G, AuthorRamsey, T, AuthorRandolph, T, AuthorRhodes, S, AuthorRomero-Wolf, A, AuthorRoy, T, AuthorRuiz, A, AuthorShaw, H, AuthorSlutsky, J, AuthorSpence, D, AuthorStocky, J, AuthorTallon, J, AuthorThorpe, I, AuthorTolman, W, AuthorUmfress, H, AuthorValencia, R, AuthorValerio, C, AuthorWarner, W, AuthorWellman, J, AuthorWillis, P, AuthorZiemer, J, AuthorZwahlen, J, AuthorArmano, M, AuthorAudley, H.1, Author              Baird, J, AuthorBinetruy, P, AuthorBorn, M.1, Author              Bortoluzzi, D, AuthorCastelli, E, AuthorCavalleri, A, AuthorCesarini, A, AuthorCruise, A M, AuthorDanzmann, K.1, Author              de Deus Silva, M , AuthorDiepholz, I.1, Author              Dixon, G, AuthorDolesi, R, AuthorFerraioli, L, AuthorFerroni, V, AuthorFitzsimons, E D, AuthorFreschi, M, AuthorGesa, L, AuthorGibert, F, AuthorGiardini, D, AuthorGiusteri, R, AuthorGrimani, C, AuthorGrzymisch, J, AuthorHarrison, I, AuthorHeinzel, G.1, Author              Hewitson, M.2, Author              Hollington, D, AuthorHoyland, D, AuthorHueller, M, AuthorInchauspe, H, AuthorJennrich, O, AuthorJetzer, P, AuthorKarnesis, N, AuthorKaune, B.1, Author              Korsakova, N, AuthorKillow, C J, AuthorLobo, J A, AuthorLloro, I, AuthorLiu, L, AuthorLopez-Zaragoza, J P, AuthorMaarschalkerweerd, R, AuthorMance, D, AuthorMeshksar, N, AuthorMartin, V, AuthorMartin-Polo, L, AuthorMartino, J, AuthorMartin-Porqueras, F, AuthorMateos, I, AuthorMcNamara, P W, AuthorMendes, J, AuthorMendes, L, AuthorNofrarias, M.1, Author              Paczkowski, S.1, Author              Perreur-Lloyd, M, AuthorPetiteau, A, AuthorPivato, P, AuthorPlagnol, E, AuthorRamos-Castro, J, AuthorReiche, J.1, Author              Robertson, D I, AuthorRivas, F, AuthorRussano, G, AuthorSopuerta, C F, AuthorSumner, T, AuthorTexier, D, AuthorVetrugno, D, AuthorVitale, S, AuthorWanner, G.1, Author              Ward, H, AuthorWass, P J, AuthorWeber, W J, AuthorWissel, L, AuthorWittchen, A, AuthorZweifel, P, Author more..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
 Abstract: The Space Technology 7 Disturbance Reduction System (ST7-DRS) is a NASA technology demonstration payload that operated from January 2016 through July of 2017 on the European Space Agency's LISA Pathfinder spacecraft. The joint goal of the NASA and ESA missions was to validate key technologies for a future space-based gravitational wave observatory targeting the source-rich milliHertz band. The two primary components of ST7-DRS are a micropropulsion system based on colloidal micro-Newton thrusters (CMNTs) and a control system that simultaneously controls the attitude and position of the spacecraft and the two free-flying test masses (TMs). This paper presents our main experimental results and summarizes the overall the performance of the CMNTs and control laws. We find that the CMNT performance to be consistent with pre-flight predictions, with a measured system thrust noise on the order of $100\,\textrm{nN}/\sqrt{\textrm{Hz}}$ in the $1\,\textrm{mHz}\leq f \leq 30\,\textrm{mHz}$ band. The control system maintained the TM-spacecraft separation with an RMS error of less than 2$\,$nm and a noise spectral density of less than $3\,\textrm{nm}/\sqrt{\textrm{Hz}}$ in the same band. Thruster calibration measurements yield thrust values consistent with the performance model and ground-based thrust-stand measurements, to within a few percent. We also report a differential acceleration noise between the two test masses with a spectral density of roughly $3\,\textrm{fm}/\textrm{s}^2/\sqrt{\textrm{Hz}}$ in the $1\,\textrm{mHz}\leq f \leq 30\,\textrm{mHz}$ band, slightly less than twice as large as the best performance reported with the baseline LISA Pathfinder configuration and below the current requirements for the Laser Interferometer Space Antenna (LISA) mission.

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 Dates: 2018-09-242018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1809.08969
URI: http://arxiv.org/abs/1809.08969
DOI: 10.1103/PhysRevD.98.102005
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 98 (10) Sequence Number: 102005 Start / End Page: - Identifier: -