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http://hdl.handle.net/20.500.12386/23592| Title: | LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations | Authors: | Grimani, C. Fabi, M. Lobo, A. Mateos, I. TELLONI, Daniele |
Issue Date: | 2015 | Journal: | CLASSICAL AND QUANTUM GRAVITY | Number: | 32 | Issue: | 3 | First Page: | 035001 | Abstract: | Metal free-floating test masses aboard the future interferometers devoted to gravitational wave detection in space are charged by galactic and solar cosmic rays with energies \gt 100 MeV/n. This process represents one of the main sources of noise in the lowest frequency band (\lt 10<SUP>-3</SUP> Hz) of these experiments. We study here the charging of the LISA Pathfinder (LISA-PF) gold-platinum test masses due to galactic cosmic-ray (GCR) protons and helium nuclei with the Fluka Monte Carlo toolkit. Projections of the energy spectra of GCRs during the LISA-PF operations in 2015 are considered. This work was carried out on the basis of the solar activity level and solar polarity epoch expected for LISA-PF. The effects of GCR short-term variations are evaluated here for the first time. Classical Forbush decreases, GCR variations induced by the Sun rotation, and fluctuations in the LISA-PF frequency bandwidth are discussed. | URI: | http://hdl.handle.net/20.500.12386/23592 | URL: | https://iopscience.iop.org/article/10.1088/0264-9381/32/3/035001 | ISSN: | 0264-9381 | DOI: | 10.1088/0264-9381/32/3/035001 | Bibcode ADS: | 2015CQGra..32c5001G | Fulltext: | open |
| Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CQG_CG_ST.pdf | postprint | 1.28 MB | Adobe PDF | View/Open |
| P16_Grimani_et_al_2015.pdf | [Administrators only] | 931.08 kB | Adobe PDF |
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