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http://hdl.handle.net/20.500.12386/23588
Titolo: | Role of GCR positive and negative particles in charging the LISA-PF test masses in 2015 | Autori: | Grimani, C. Fabi, M. Lobo, A. J. Mateos, I. TELLONI, Daniele |
Data pubblicazione: | 2015 | Rivista: | JOURNAL OF PHYSICS. CONFERENCE SERIES | Titolo del volume in cui è pubblicato il poster: | 10th International LISA Symposium | Curatore/i del volume in cui è pubblicato il contributo: | Ciani, Giacomo; Conklin, John W.; Mueller, Guido | Numero: | 610 | Fascicolo: | 1 | Da pagina:: | 012025 | Abstract: | The LISA Pathfinder (LISA-PF) mission launch is scheduled during the second half of 2015. Galactic and solar ions with energies larger than 100 MeV/n and electrons above 10 MeV penetrate the spacecraft material and charge the gold-platinum test masses. This charging process generates spurious forces that, in some cases, may mimic the effects of genuine gravitational wave signals. A study of the test-mass charging due to galactic cosmic rays (GCRs) down to 1% in composition is reported here. The reliability of the results of this work is mainly limited by our capability to predict the energy spectra of GCRs in 2015. To this purpose, our model is applied to the expected PAMELA experiment proton data for the period January- March 2014 characterized by a positive polarity period and a level of solar modulation similar to those expected at the time of LISA-PF. The PAMELA observations will be available in the next few months. The comparison between our projections and measurements will provide valuable clues on the test-mass charging estimate uncertainty. | Titolo del convegno: | 10th International LISA Symposium | Luogo del convegno: | Florida, USA | Periodo del convegno: | 18–23 May 2014 | URI: | http://hdl.handle.net/20.500.12386/23588 | URL: | https://iopscience.iop.org/article/10.1088/1742-6596/610/1/012025 | ISSN: | 1742-6588 | DOI: | 10.1088/1742-6596/610/1/012025 | Bibcode ADS: | 2015JPhCS.610a2025G | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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