LBRIGNOLI, A.; CONABOY, V.; DORMENEV, D.; JIMENO, D.; LACKER, H.; SCHARF, C.; SCHMIDT, J.; ZAUNIK, H.G.
We studied the light yield of a pure polystyrene slide coated with wavelength-shifter molecules, coupled to a photomultiplier, using 𝛽 − particles from a 90Sr source, as a possible easyto-build, low-cost plastic scintillator detector. Comparison measurements were performed with an uncoated polystyrene slide as well as with uncoated and coated PMMA slides, the latter which can only produce Cherenkov light when being traversed by charged particles. The results with the single (double) coated polystyrene slides show about 4.9 (6.3) times higher detected photon yield compared to the uncoated slide. For comparison, the light yield of a polystyrene-based extruded plastic scintillator material doped with PTP and POPOP was measured as well.
The absolute detected light yield motivates future studies for developing easy-to-build, low-cost polystyrenebased plastic scintillator detectors.
2.1. Sample preparation
The slides were dipped into the WLS dye for 80 s, withdrawn from the WLS dye at a speed of 93 mm s−1 using the dip-coater ND-DC Dip Coater from the company Nadetech Innovations S.L. also used in our production of dip-coated WOM tubes, and then dried for at least 24 h.