{"paper":{"title":"Precision Charge Control for Isolated Free-Falling Test Masses: LISA Pathfinder Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Cavalleri, A. Cesarini, A. M. Cruise, A. Petiteau, A. Wittchen, B. Kaune, C. F. Sopuerta, C. Grimani, C. J. Killow, C. Trenkel, D. Bortoluzzi, D. Giardini, D. Hollington, D. Hoyland, D. I. Robertson, D. Mance, D. Shaul, D. Texier, D. Vetrugno, E. Castelli, E. D. Fitzsimons, E. Plagnol, F. Gibert, F. Mailland, F. Martin-Porqueras, F. Rivas, G. Dixon, G. Heinzel, G. Russano, G. Santoruvo, G. Wanner, H. Audley, H. Inchausp\\'e, H. Ward, I. Diepholz, I. Harrison, I. Lloro, I. Mateos, 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, L. Liu, L. Martin-Polo, L. Mendes, L. Wissel, M. Armano, M. Born, M. de Deus Silva, M. Freschi, M. Hewitson, M. Hueller, M. Nofrarias, M. Perreur-Lloyd, M. Pfeil, N. Karnesis, N. Korsakova, N. Meshskar, O. Jennrich, P. Binetruy, P. Jetzer, P. J. Wass, P. Pivato, P. Sarra, P. W. McNamara, P. Zweifel, R. Dolesi, R. Giusteri, R. Maarschalkerweerd, S. Paczkowski, S. Vitale, S. Waschke, T. Sumner, V. Ferroni, V. Mart\\'in, W. J. Weber","submitted_at":"2018-07-06T14:30:04Z","abstract_excerpt":"The LISA Pathfinder charge management device was responsible for neutralising the cosmic ray induced electric charge that inevitably accumulated on the free-falling test masses at the heart of the experiment. We present measurements made on ground and in-flight that quantify the performance of this contactless discharge system which was based on photo-emission under UV illumination. In addition, a two-part simulation is described that was developed alongside the hardware. Modelling of the absorbed UV light within the Pathfinder sensor was carried out with the GEANT4 software toolkit and a sepa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.02435","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":""},"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"}