Gap Uniformity Characterization of MicroMegas Detector

A Micromegas (Micro-MEsh GAseous Structures) is a novel, highly segmented gas-gain detector often used in Time Projection Chambers (TPCs). At the Cyclotron Institute, Texas A&M University, Micromegas are utilized in active target detectors TexAT and TeBAT, which are used for experiments with rare isotope beams to study the structure of exotic nuclei and nuclear astrophysics measurements. A facility is being developed to perform automated tests of Micromegas detectors to produce a gain map across the large area of the detector to improve energy resolution, which is essential for particle identification. Both the data taking and the analysis are completely automated using and controlled by the Python scripts and C++ ROOT6 Code. This allows for an efficient, accurate, and highly reproducible gain map to be constructed. Note that the map is unique for each realization of the Micromegas, even if they are built using identical blueprints. These maps will be applied to the future experimental data obtained with TexAT and TeBAT active target detectors.