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arXiv · physics/0410080

Long sandwich modules for photon veto detectors

N. Yershov·M. Khabibullin·Yu. Kudenko·L. Littenberg·V. Mayatski·O. Mineev
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Abstract

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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N. Yershov, M. Khabibullin, Yu. Kudenko, L. Littenberg, V. Mayatski, O. Mineev. 2004-10-13. Long sandwich modules for photon veto detectors. https://doi.org/10.1016/j.nima.2004.11.051

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