TY - JOUR TI - Properties of the Ukraine polystyrene-based plastic scintillator UPS 923A AU - Artikov, A AU - Budagov, J AU - Chirikov-Zorin, I AU - Chokheli, D and AU - Lyablin, M AU - Bellettini, G AU - Menzione, A AU - Tokar, S AU - Giokaris, AU - N AU - Manousakis-Katsikakis, A JO - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT PY - 2005 VL - 555 TODO - 1-2 SP - 125-131 PB - ELSEVIER SCIENCE BV SN - null TODO - 10.1016/j.nima.2005.09.021 TODO - natural aging; scintillator properties; polystyrene; polyvinyltoluene; light output; time properties; technical attenuation length; bulk attenuation length; wavelength-shifting fibers TODO - The polystyrene-based scintillator UPS 923A was chosen for upgrading of the muon system for the CDF detector at the Fermilab Tevatron. Properties of this scintillator such as light output, light attenuation, long-term stability and also timing characteristics of scintillators and wavelength-shifting fibers were investigated. The method for the Bulk Attenuation Length measurements of the scintillator to its own light emitted was proposed. Comparison measurements of the characteristics of the UPS 923A and the polyvinyltoluene-based scintillator NE 114 are done. It was found that natural aging of the NE 114 was two times faster than that of the UPS 923A. (c) 2005 Elsevier B.V. All rights reserved. ER -