The performance of 2 mm-thick TOF counters was examined under various combinations of different scintillator sizes, light-guides, and photo-multipliers (PMs) with the use of a 2-GeV/c beam. The obtained time resolution (σ) was 90 ps for a 50 mmw × 150 mml counter with directly coupled 2 in. diameter PMs, and 140 ps for a 150 mmw × 250 mml counter coupled through twisted light-guides to the PMs. A 40 mm-thick 150 mmw × 12 000 mml counter was also tested, and 60 ps was obtained.
ASJC Scopus subject areas
- Nuclear and High Energy Physics