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Charge induced acceleration noise in the LISA gravitational reference sensor

Sumner, Timothy J.; Wass, Peter J.; Conklin, John W. +2 more

The presence of free charge on isolated proof-masses, such as those within space-borne gravitational reference sensors, causes a number of spurious forces which will give rise to associated acceleration noise. A complete discusssion of each charge induced force and its linear acceleration noise is presented. The resulting charge acceleration noise…

Spacecraft and interplanetary contributions to the magnetic environment on-board LISA Pathfinder

Mendes, L.; Russano, G.; Nofrarias, M. +79 more

LISA Pathfinder (LPF) has been a space-based mission designed to test new technologies that will be required for a gravitational wave observatory in space. Magnetically driven forces play a key role in the instrument sensitivity in the low-frequency regime (mHz and below), the measurement band of interest for a space-based observatory. The magneti…

Low-energy electron emission at the separation of gold-platinum surfaces induced by galactic cosmic rays on board LISA Pathfinder

Grimani, Catia; Villani, Mattia; Fabi, Michele +1 more

Galactic cosmic rays and solar energetic particles will induce spurious Coulomb forces on free-falling, gold-platinum test-masses on board the future interferometers for low-frequency gravitational wave detection in space. The European Space Agency mission LISA Pathfinder (LPF) was aimed to test the performance of instruments that will be placed o…