Development of a thick gas electron multiplier-based beta-ray detector

A new beta-ray detector using Thick Gas Electron Multiplier (THGEM) technology is presented. Traditional proportional counters have been considered the standard for many decades for radiation contamination monitoring. However, it has always been challenging to detect low energy beta-emitters like 3H and 14C. In order to extend the low energy cutoff of these beta particles, it is important to keep the electron multiplication gain as high as …