The Atomic Spectroscopy and Collisions Using Slow Antiprotons (ASACUSA) experiment at CERN constructed some segmented scintillation counters to measure and track the charged pions emerging from antiproton annihilations in a future superconducting radiofrequency Paul trap for antiprotons. The photoelectron yields of various scintillator configurations were measured using a π- beam of momentum p ≈ 1 GeV/c at the T9 beamline of the CERN Proton Synchrotron (PS). Various fibers and silicon photomultipliers, fiber end terminations, and couplings between the fibers and scintillators were compared. The detectors were also tested using the antiproton beam of the Antiproton Decelerator (AD). At high antiproton rates a saturation was observed in the scintillator signal. We review the detector construction and measurement results.
|Journal||Proceedings of Science|
|Publication status||Published - 2014|
ASJC Scopus subject areas