  Solar energetic particles (SEPs) accelerated from shocks driven by coronal
mass ejections (CMEs) are one of the major causes of geomagnetic storms on
Earth. Therefore, it is necessary to predict the occurrence and intensity of
such disturbances. For this purpose we analyzed in detail 38 non-interacting
halo and partial halo CMEs, as seen by the Solar and Heliospheric Observatory
/Large Angle and Spectrometric Coronagraph (SOHO/LASCO), generating SEPs (in
>10 MeV, >50 MeV, and >100 MeV energy channels) during the quadrature
configuration of the Solar TErrestrial RElations Observatory (STEREO) twin
spacecrafts with respect to the Earth, which marks the ascending phase of solar
cycle 24 (i.e., 2009-2013). The main criteria for this selection period is to
obtain height-time measurements of the CMEs without significant projection
effects and in a very large field of view. Using the data from STEREO/Sun Earth
Connection Coronal and Heliospheric Investigation (STEREO / SECCHI) images we
determined several kinematic parameters and instantaneous speeds of the CMEs.
First, we compare instantaneous CME speed and Mach number versus SEP fluxes for
events originating at the western and eastern limb we observe high correlation
for the western events and anticorrelation for the eastern events. Next we
investigated instantaneous CME kinematic parameters such as maximum speed,
maximum Mach number, and the CME speed and Mach number at SEP peak flux versus
SEP peak fluxes. Highly positive correlation is observed for Mach number at SEP
peak flux for all events. The obtained instantaneous Furthermore, we conducted
estimates of delay in time and distance between CME, SEP, and shock parameters.
Comparative studies of the considered energy channels of the SEPs also throw
light on the reacceleration of suprathermal seed ions by CME-driven shocks that
are pre-accelerated in the magnetic reconnection.
