{"paper":{"title":"Charging of free-falling test masses in orbit due to cosmic rays: results from LISA Pathfinder","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Cavalleri A. Cesarini, A. M Cruise, A. Petiteau, A. Wittchen, B. Kaune, C. F. Sopuerta, C. Grimani, C. J. Killow, D. Bortoluzzi, D. Giardini, D. Hollington, D. Hoyland, D. I. Robertson, D. Mance, D. Texier, D. Vetrugno, E. Castelli, E. D. Fitzsimons, E. Plagnol, F. Gibert, F. Martin-Porqueras, F. Rivas, G. Dixon, G. Heinzel, G. Russano, G. Wanner, H. Audley, H. Inchausp\\'e, H. Ward, I. Diepholz, I. Harrison, J. A. Lobo, J. Baird, J. Grzymisch, J. I. Thorpe, J. Martino, J. Mendes, J. P. L\\'opez-Zaragoza, J. Ramos-Castro, J. Reiche, J. Slutsky, K. Danzmann, L. Ferraioli, L. Gesa, LISA Pathfinder Collaboration: M. Armano, L. Martin-Polo, L. Mendes, L. Wissel, M. Born, M. de Deus Silva, M. Freschi, M. Hewitson, M. Hueller, M. Nofrarias, M. Perreur-Lloyd, M.-S. Hartig, N. Karnesis, N. Korsakova, N. Meshksar, O. Jennrich, P. Binetruy, P. Jetzer, P. J. Wass, P. W. McNamara, P. Zweifel, R. Dolesi, R. Giusteri, R. Maarschalkerweerd, S. Paczkowski, S. Vitale, T. J. Sumner, V. Ferroni, V. Mart\\'in, W. J. Weber","submitted_at":"2022-11-17T02:58:47Z","abstract_excerpt":"A comprehensive summary of the measurements made to characterize test mass charging due to the space environment during the LISA Pathfinder mission is presented. Measurements of the residual charge of the test mass after release by the grabbing and positioning mechanism, show that the initial charge of the test masses was negative after all releases, leaving the test mass with a potential in the range $-12$ mV to $-512$ mV. Variations in the neutral test mass charging rate between $21.7$ e s$^{-1}$ and $30.7$ e s$^{-1}$ were observed over the course of the 17-month science operations produced "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.09309","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2211.09309/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}