Data Acquisition System for the Angra Project

The design of a Data Acquisition System (DAQ) for the Angra Neutrino project is presented. The DAQ is divided in two main sub-systems - neutrino and veto. The neutrino sub-system receives as input pulses from the photomultiplier tubes that cover the active volume for the neutrino detection. The veto sub-sytem is responsible for processing the veto information generated by muons crossing platic scintillators covering the whole detector. Both sub-systems are custom electronics mainly based on VME standard. The electronics design uses off-the-shelf devices from worldwide semiconductor companies. A software framework for the DAQ is developed for Linux platforms by using standard scientific tools and languages like Root and C++. This note focuses on the descritpion of the neutrino DAQ architecture and its hardware implementation. Other notes will present the veto sub-system as well as the software implementation for both DAQ channels.