Título Capacitive sensing of test mass motion with nanometer precision over millimeter-wide sensing gaps for space-borne gravitational reference sensors
Autores Armano, M. , Audley, H. , Auger, G. , Baird, J. , Bassan, M. , Binetruy, P. , Born, M. , Bortoluzzi, D. , Brandt, N. , Caleno, M. , Cavalleri, A. , Cesarini, A. , Cruise, A. M. , Danzmann, K. , Silva, M. de Deus , De Rosa, R. , Di Fiore, L. , Diepholz, I. , Dixon, G. , Dolesi, R. , Dunbar, N. , Ferraioli, L. , Ferroni, V. , Fitzsimons, E. D. , Flatscher, R. , Freschi, M. , Marirrodriga, C. Garcia , Gerndt, R. , Gesa, L. , Gibert, F. , Giardini, D. , Giusteri, R. , Grado, A. , Grimani, C. , Grzymisch, J. , Harrison, I. , Heinzel, G. , Hewitson, M. , Hollington, D. , Hoyland, D. , Hueller, M. , Inchauspe, H. , Jennrich, O. , Jetzer, P. , Johlander, B. , Karnesis, N. , Kaune, B. , Korsakova, N. , Killow, C. J. , Lobo, J. A. , Lloro, I. , Liu, L. , Lopez-Zaragoza, J. P. , Maarschalkerweerd, R. , Mance, D. , Martin, V. , Martin-Polo, L. , Martino, J. , Martin-Porqueras, F. , Madden, S. , Mateos, I. , McNamara, P. W. , Mendes, J. , Mendes, L. , Meshksar, N. , Nofrarias, M. , Paczkowski, S. , Perreur-Lloyd, M. , Petiteau, A. , Pivato, P. , Plagnol, E. , Prat, P. , Ragnit, U. , Ramos-Castro, J. , Reiche, J. , Robertson, D. I. , Rozemeijer, H. , RIVAS GARCÍA, FRANCISCO, Russano, G. , Sarra, P. , Schleicher, A. , Slutsky, J. , Sopuerta, C. F. , Stanga, R. , Sumner, T. J. , Texier, D. , Thorpe, J. I. , Trenkel, C. , Troebs, M. , Vetrugno, D. , Vitale, S. , Wanner, G. , Ward, H. , Wass, P. J. , Wealthy, D. , Weber, W. J. , Wissel, L. , Wittchen, A. , Zambotti, A. , Zanoni, C. , Ziegler, T. , Zweifel, P. , LISA Pathfinder Collaboration
Publicación externa Si
Medio Phy. Rev. D
Alcance Article
Naturaleza Científica
Cuartil JCR 1
Cuartil SJR 1
Impacto JCR 4.39400
Impacto SJR 1.80100
Fecha de publicacion 26/09/2017
ISI 000411769400002
DOI 10.1103/PhysRevD.96.062004
Abstract We report on the performance of the capacitive gap-sensing system of the Gravitational Reference Sensor on board the LISA Pathfinder spacecraft. From in-flight measurements, the system has demonstrated a performance, down to 1 mHz, that is ranging between 0.7 and 1.8 aF Hz(-1/2). That translates into a sensing noise of the test mass motion within 1.2 and 2.4 nm Hz(-1/2) in displacement and within 83 and 170 nrad Hz(-1/2) in rotation. This matches the performance goals for LISA Pathfinder, 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 gravitational reference sensors for space-borne gravitational waves observation.
Miembros de la Universidad Loyola

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