Abstract
Plastic scintillator detectors are widely used in particle physics thanks to the very good particle identification, tracking capabilities and time resolution. However, new experimental challenges and the need for enhanced performance require the construction of detector geometries that are complicated using the current production techniques. In this article we propose a new production technique based on additive manufacturing that aims to 3D print polystyrene-based scintillator. The production process and the results of the scintillation light output measurement of the 3D-printed scintillator are reported.
Highlights
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In this article we describe the current state of the art of plastic scintillator production and propose a new production technique based on additive manufacturing applied to polystyerene-based plastic scintillator, with the goal to allow for an easy production but at the same time keeping performances comparable to more standard production techniques like extrusion or injection molding
PhotoMultipliers Tubes (PMTs) or Silicon PhotoMultipliers (SiPM) can be used to count the number of photons produced. They can be either directly coupled with the plastic scintillator or, in more complex geometries, the light wavelength can be shifted in the wavelength shifting (WLS) fiber and shifted, for example, to the green band
Summary
Like paraterphenyl, are introduced into the polymer at a level of approximately 2% by weight This composition practically did not undergo any changes in the last fifty years, many new polymers have been proposed. A sufficiently energetic charged particle interacting with the plastic scintillator excites the polymer matrix molecules. The excitation energy is transferred to the activator via a resonant dipole-dipole interaction, called Foerster mechanism [10], inversely proportional to the 6-th power of the intramolecule distance. This interaction strongly couples the polymer base and the activator, sharply increasing the light yield of the plastic scintillator and reducing the light emission delay.
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