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  Precision Charge Control for Isolated Free-Falling Test Masses: LISA Pathfinder Results

LISA Pathfinder Collaboration, Armano, M., Audley, H., Baird, J., Binetruy, P., Born, M., et al. (2018). Precision Charge Control for Isolated Free-Falling Test Masses: LISA Pathfinder Results. Physical Review D, 98: 062001. doi:10.1103/PhysRevD.98.062001.

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LISA Pathfinder Collaboration, Author              
Armano, M., Author
Audley, H.1, Author           
Baird, J., Author
Binetruy, P., Author
Born, M.1, Author           
Bortoluzzi, D., Author
Castelli, E., Author
Cavalleri, A., Author
Cesarini, A., Author
Cruise, A. M., Author
Danzmann, K.1, Author           
Silva, M. de Deus, Author
Diepholz, I.1, Author           
Dixon, G., Author
Dolesi, R., Author
Ferraioli, L., Author
Ferroni, V., Author
Fitzsimons, E. D., Author
Freschi, M., Author
Gesa, L., AuthorGiardini, D., AuthorGibert, F., AuthorGiusteri, R., AuthorGrimani, C., AuthorGrzymisch, J., AuthorHarrison, I., AuthorHeinzel, G., AuthorHewitson, M.2, Author           Hollington, D., AuthorHoyland, D., AuthorHueller, M., AuthorInchauspé, H., AuthorJennrich, O., AuthorJetzer, P., AuthorKarnesis, N., AuthorKaune, B.1, Author           Korsakova, N., AuthorKillow, C. J., AuthorLiu, L., AuthorLloro, I., AuthorLobo, J. A., AuthorLópez-Zaragoza, J. P., AuthorMaarschalkerweerd, R., AuthorMailland, F., AuthorMance, D., AuthorMartín, V., AuthorMartin-Polo, L., AuthorMartin-Porqueras, F., AuthorMartino, J., AuthorMateos, I., AuthorMcNamara, P. W., AuthorMendes, J., AuthorMendes, L., AuthorMeshskar, N., AuthorNofrarias, M., AuthorPaczkowski, S.1, Author           Perreur-Lloyd, M., AuthorPetiteau, A., AuthorPfeil, M., AuthorPivato, P., AuthorPlagnol, E., AuthorRamos-Castro, J., AuthorReiche, J.1, Author           Robertson, D. I., AuthorRivas, F., AuthorRussano, G., AuthorSantoruvo, G., AuthorSarra, P., AuthorShaul, D., AuthorSlutsky, J., AuthorSopuerta, C. F., AuthorSumner, T., AuthorTexier, D., AuthorThorpe, J. I., AuthorTrenkel, C., AuthorVetrugno, D., AuthorVitale, S., AuthorWanner, G.1, Author           Ward, H., AuthorWaschke, S., AuthorWass, P. J., AuthorWeber, W. J., AuthorWissel, L.1, Author           Wittchen, A.1, Author           Zweifel, 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: Physics, Instrumentation and Detectors, physics.ins-det
 Abstract: 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
separate MATLAB charge transfer model calculated the net photocurrent between
the test masses and surrounding housing in the presence of AC and DC electric
fields. We confront the results of these models with observations and draw
conclusions for the design of discharge systems for future experiments like
LISA that will also employ free-falling test masses.

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 Dates: 2018-07-062018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 98 Sequence Number: 062001 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258