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Many experiments are currently using or proposing to use large area GEM foilsin their detectors, which is creating a need for commercially available GEMfoils. Currently CERN is the only main distributor of large GEM foils, howeverwith the growing interest in GEM technology keeping up with the increasingdemand for GEMs will be difficult. Thus the commercialization of GEMs up to 50$\times$ 50 cm$^2$ has been established by Tech-Etch Inc. of Plymouth, MA, USAusing the single-mask technique. The electrical performance and optical qualityof the single-mask GEM foils have been found to be on par with those producedby CERN. The next critical step towards validating the Tech-Etch single-maskGEM foils is to test their performance under physics conditions. Thesemeasurements will allow us to quantify and compare the gain and efficiency ofthe detector to other triple-GEM detectors. This will be done by constructingseveral single-mask triple-GEM detectors, using foils manufactured byTech-Etch, which follow the design used by the STAR Forward GEM Tracker (FGT).These detectors will investigate ways in which to further decrease the materialbudget and increase the efficiency of the detector by incorporating perforatedKapton spacer rings rather than G10 spacing grids to reduce the dead area ofthe detector. The materials and tooling needed to assemble the triple-GEMdetectors have been acquired. The GEM foils have been electrically tested, anda handful have been optically scanned. We found these results to be consistentwith GEM foils produced by CERN. With the success of these initial tests,construction of the triple-GEM detectors is now under way.

Construction of Triple-GEM Detectors Using Commercially Manufactured Large GEM Foils