The 8th International Conference on Micro Pattern Gaseous Detectors (MPGD24)

With its profound ability to detect particles efficiently and provide excellent timing and spatial
resolutions, the Gas Electron Multiplier (GEM) detector has become a highly useful technology
in the radiation imaging technique. The large-size imaging detectors can be easily fabricated with
GEM detectors due to its low cost. These imaging detectors can be utilized for cargo imaging,
soil and clay imaging for agriculture purposes, etc. In this work, we explore the application of
the GEM detector to achieve various imaging objectives. The unique structure of the GEM
detector, comprising thin layers of gas-filled chambers and electrodes, enables precise tracking
and localization of particles passing through. By integrating GEM detectors into imaging

systems, high-quality images with sub-millimeter resolution have been obtained. An image has

been reconstructed by detecting the radiation’s impact location and the charge avalanche
deposition, which has been used for dimension measurements, object identification, and material
properties. The outcomes show that dimensions can be determined with a sub-millimeter
resolution, and the uncertainty in material identification is less than 1%. Additionally, it proves
valuable in agriculture by quantitative measurement of density and gauging moisture levels in
soil, which is vital for crop health. We will discuss these practical applications of GEM detectors
with initial results obtained from prototypes.