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

摘要

A new type of a trigger-scintillation counter array designed for the MTVexperiment at TRIUMF-ISAC has been developed, which uses aluminum-metallizedfilm tape for wrapping to achieve the required assembling precision of $\pm$0.5mm. The MTV experiment uses a cylindrical drift chamber (CDC) as the mainelectron-tracking detector. The barrel-type trigger counter is placed insidethe CDC to generate a trigger signal using 1 mm thick, 300 mm long thin plasticscintillation counters. Detection efficiency and light attenuation comparedwith conventional wrapping materials are studied.