Cassini Plasma Spectrometer (CAPS) data sets are archived by the PDS Planetary Plasma Interactions (
PPI) Node at the University of California, Los Angeles.
User's Guide - is 
on line at the PPI Node. 
Raw Data Products
Uncalibrated (EDRs)-- 
Online Access
Higher Order products - 
Under Development - electron density, electron temperature, ion flow velocity and separate density and temperature values for different ion species. 
Other Useful Products for Interpreting the Data
See the 
Master Schedule for a time ordered listing of observations by all instruments.
SPICE - Archived Cassini SPICE ancillary data providing observation geometry (positions, orientations, instrument pointing, time conversions and the like) are available from the PDS 
NAIF Node.
Publications - A listing of team members to facilitate literature searches.