A simulation of the optical attenuation of TPB coated light-guide detectors

作者：Jones B J P^*

来源：Journal of Instrumentation, 2013, 8: C10015.

DOI：10.1088/1748-0221/8/10/C10015

• Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
• Noble liquid detectors (scintillation, ionization, double-phase)
• Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solid-photocathodes)

This note is provided as a supplementary section to accompany the paper [1] which has been included in these proceedings. It describes some simple simulations which were performed in order to understand the attenuation behaviors of acrylic light-guides operated in air and argon, which were characterized in [2]. Whilst these simulations are only at the level of sophistication of a toy model, they illustrate interesting non-exponential light attenuation effects and the differences between operating light-guide based detectors in argon and air environments. We investigate the effects of surface absorption, surface roughness and wavelength dependence, and use a model tuned on the light-guide attenuation curve measured in air to make a prediction of the light-guide attenuation curve in argon. This curve is compared with data from a liquid argon test stand, and an improvement over a simple exponential model is observed.

• 出版日期2013-10