Cosmic-ray particles traverse the LISA apparatus charging the proof masses. This process causes spurious Coulomb forces between the test masses and the surrounding conducting surfaces mimicking gravitational wave signals. Approximately 13 g cm(-2) of matter overlies the proof masses. The nucleonic component of cosmic rays (about 99% of the total) below 100 MeV/n stops inside the spacecraft without reaching the masses. It is of major importance to determine the primary and solar cosmic-ray particle fluxes above this energy near the LISA orbit in order to predict the effect on the apparatus.
Cosmic-ray spectra near the LISA orbit
VOCCA, Helios;
2004
Abstract
Cosmic-ray particles traverse the LISA apparatus charging the proof masses. This process causes spurious Coulomb forces between the test masses and the surrounding conducting surfaces mimicking gravitational wave signals. Approximately 13 g cm(-2) of matter overlies the proof masses. The nucleonic component of cosmic rays (about 99% of the total) below 100 MeV/n stops inside the spacecraft without reaching the masses. It is of major importance to determine the primary and solar cosmic-ray particle fluxes above this energy near the LISA orbit in order to predict the effect on the apparatus.File in questo prodotto:
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