Speaker
Description
Wavelength Shifting (WLS) fibres shift UV/blue light to green, granting efficient scintillation conversion in the process. These fibres enhance detection accuracy in particle physics experiments due to reduced interference susceptibility, improving overall signal quality.
The attenuation length of WLS fibres, defined as the distance over which the signal is reduced by a factor of 1/e, is a critical parameter for light collection and signal uniformity in scintillation detectors.
We are studying optical properties of WLS fibres, with a particular focus on the attenuation length, using a square double-clad BCF-92 fibre from Saint-Gobain. The decrease in light intensity along the WLS fibre is measured using a pulsed light source, and the resulting attenuation curve is fitted to two exponential functions to determine both the short and the long attenuation parameters.
To evaluate the reliability of the measurements, several parameter tests were performed regarding the fibre and external factors. No significant variation was observed across these conditions, indicating a high degree of consistency in the results.
In this presentation, experimental setup, conditions and the obtained results will be assessed and discussed.
| Workshop topics | Sensor materials, device processing & technologies |
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