The Effect of Decreasing Aperture Diameter on Signal Transmission from the Scintillator to the Photomultiplier Tube Over a Wide Energy Range

Aleš Jančář, Zdeněk Matěj, Evžen Losa, Michal Košťál, Tomáš Czakoj, Michal Jelínek, Břetislav Mikel, Zdeněk Kopecký, Filip Mravec and Jan Král
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Aleš Jančář: VF Nuclear, Czech Republic
Zdeněk Matěj: Masaryk University, Czech Republic
Evžen Losa: Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Czech Republic
Michal Košťál: Research Centre Rez Ltd, Czech Republic
Tomáš Czakoj: Research Centre Rez Ltd, Czech Republic
Michal Jelínek: Institute of Scientific Instruments of the Czech Academy of Sciences, Czech Republic
Břetislav Mikel: Institute of Scientific Instruments of the Czech Academy of Sciences, Czech Republic
Zdeněk Kopecký: VF Nuclear, Czech Republic
Filip Mravec: VF Nuclear, Czech Republic
Jan Král: Masaryk University, Czech Republic

European Journal of Applied Physics, 2024, vol. 6, issue 5, 12-17

Abstract: In this paper, we study the effect of decreasing aperture diameter on signal transmission from the scintillator to the PMT. The apertures have been inserted directly between the scintillator and the photomultiplier. Three different aperture diameters have been used over a wide energy range. A newly developed fast digital spectrometer has been utilized for experimental measurement in the radial channel of the VR-1 research reactor. The detector signals with and without inserted apertures have been measured and evaluated. The aim of our research was to determine the effect of the apertures on the spectral quality, energy range and the evaluated physical quantities.

Keywords: Digital analyser; Gamma spectrometry; Pulse shape discrimination (PSD); VR-1 research reactor (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:epw:physic:v:6:y:2024:i:5:id:11344

DOI: 10.24018/ejphysics.2024.6.5.344

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