Development of a novel scintillation-trigger detector for the MTV experiment using aluminum-metallized film tapes.

Abstract: A new type of a trigger-scintillation counter array designed for the MTV experiment at TRIUMF-ISAC has been developed, which uses aluminum-metallized film tape for wrapping to achieve the required assembling precision of ±0.5mm. The MTV experiment uses a cylindrical drift chamber (CDC) as the main electron-tracking detector. The barrel-type trigger counter is placed inside the CDC to generate a trigger signal using 1mm thick, 300mm long thin plastic scintillation counters. Detection efficiency and light attenuation compared with conventional wrapping materials are studied. [Copyright &y& Elsevier]