Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Armano, M. et al. (2022) Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin. Physical Review D, 106(6), 062001. (doi: 10.1103/PhysRevD.106.062001)

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Abstract

We present an in depth analysis of the transient events, or glitches, detected at a rate of about one per day in the differential acceleration data of LISA Pathfinder. We show that these glitches fall in two rather distinct categories: fast transients in the interferometric motion readout on one side, and true force transient events on the other. The former are fast and rare in ordinary conditions. The second may last from seconds to hours and constitute the majority of the glitches. We present an analysis of the physical and statistical properties of both categories, including a cross-analysis with other time series like magnetic fields, temperature, and other dynamical variables. Based on these analyses we discuss the possible sources of the force glitches and identify the most likely, among which the outgassing environment surrounding the test-masses stands out. We discuss the impact of these findings on the LISA design and operation, and some risk mitigation measures, including experimental studies that may be conducted on the ground, aimed at clarifying some of the questions left open by our analysis.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ward, Professor Henry and Robertson, Dr David and Perreur-Lloyd, Mr Michael and Killow, Dr Christian
Authors: Armano, M., Audley, H., Baird, J., Binetruy, P., Born, M., Bortoluzzi, D., Castelli, E., Cavalleri, A., Cesarini, A., Chiavegato, V., Cruise, A. M., Dal Bosco, D., Danzmann, K., De Deus Silva, M., Diepholz, I., Dixon, G., Dolesi, R., Ferraioli, L., Ferroni, V., Fitzsimons, E. D., Freschi, M., Gesa, L., Giardini, D., Gibert, F., Giusteri, R., Grimani, C., Grzymisch, J., Harrison, I., Hartig, M. S., Heinzel, G., Hewitson, M., Hollington, D., Hoyland, D., Hueller, M., Inchauspé, H., Jennrich, O., Jetzer, P., Johlander, B., Karnesis, N., Kaune, B., Korsakova, N., Killow, C. J., Lobo, J. A., López-Zaragoza, J. P., Maarschalkerweerd, R., Mance, D., Martín, V., Martin-Polo, L., Martin-Porqueras, F., Martino, J., McNamara, P. W., Mendes, J., Mendes, L., Meshksar, N., Nofrarias, M., Paczkowski, S., Perreur-Lloyd, M., Petiteau, A., Plagnol, E., Ramos-Castro, J., Reiche, J., Rivas, F., Robertson, D. I., Russano, G., Sala, L., Sarra, P., Slutsky, J., Sopuerta, C. F., Sumner, T., Texier, D., Thorpe, J. I., Vetrugno, D., Vitale, S., Wanner, G., Ward, H., Wass, P., Weber, W. J., Wissel, L., Wittchen, A., Zanoni, C., and Zweifel, P.
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Centre:College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:2470-0010
ISSN (Online):2470-0029
Published Online:12 September 2022
Copyright Holders:Copyright © 2022 American Physical Society
First Published:First published in Physical Review D 106(6): 062001
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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