Long sandwich modules for photon veto detectors

Details Long sandwich modules for photon veto detectors Long sandwich modules for photon veto detectors

2004-10-13

arxiv.org/abs/physics/0410080v1

Nucl.Instrum.Meth. A543 (2005) 454-462

Physics

Instrumentation and Detectors

14 pages, 13 figures, 1 table

Scientific paper

10.1016/j.nima.2004.11.051

Long lead-scintillator sandwich modules developed for the BNL experiment KOPIO are described. The individual 4 m long module consists of 15 layers of 7 mm thick extruded scintillator and 15 layers of 1 mm lead absorber. Readout is implemented via WLS fibers glued into grooves in a scintillator with 7 mm spacing and viewed from both ends by the phototubes. Time resolution of 300 ps for cosmic MIPs was obtained. Light output stability monitored for 2 years shows no degradation beyond the measurement errors. A 4 m long C-bent sandwich module was also manufactured and tested.

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