  Galactic cosmic-ray (GCR) energy spectra observed in the inner heliosphere
are modulated by the solar activity, the solar polarity and structures of solar
and interplanetary origin. A high counting rate particle detector (PD) aboard
LISA Pathfinder (LPF), meant for subsystems diagnostics, was devoted to the
measurement of galactic cosmic-ray and solar energetic particle integral fluxes
above 70 MeV n$^{-1}$ up to 6500 counts s$^{-1}$. PD data were gathered with a
sampling time of 15 s. Characteristics and energy-dependence of GCR flux
recurrent depressions and of a Forbush decrease dated August 2, 2016 are
reported here. The capability of interplanetary missions, carrying PDs for
instrument performance purposes, in monitoring the passage of interplanetary
coronal mass ejections (ICMEs) is also discussed.
