Cream Flight Data Processing

The Cosmic Ray Energetics And Mass (CREAM) instrument is a balloon-borne experiment designed to measure the composition and energy spectra of cosmic rays up to similar to 10(15) eV. The instrument consists of, from top to bottom, an 8-paddle Timing Charge Detector (TCD), a 512-tube Transition Radiation Detector (TRD), a 2912-pixel Silicon Charge Detector (SCD), 2035 scintillating fibers in 3 hodoscopes interleaved with a pair of graphite targets, and a 20-layer tungsten/scintillating-fiber sampling calorimeter with 1000 fiber ribbons. We have developed the CREAM Data Processing System (CDPS), an object-oriented data processing program based on ROOT. In this paper we describe the data processing scheme used to handle flight data.