The performance of MACRO liquid scintillator in the search for magnetic monopoles with 10−3 < beta < 1

Abstract MACROis designed to make a multiply redundant search for GUT magnetic monopolesover a wide velocity range. The 100 MHz pulse height recorder and synchronous encoder (PHRASE) and the energy reconstruction processor (ERP) are two components of that search, both based on the MACROliquid scintillator. They are sensitive to monopoleswith or without captured nuclei in the range β ∼ 10 −3 to β ∼ 1. Here, the performance of these systems is discussed, including also analysis methods and background evaluations.