Construction of a Set of Gas Electron Multiplier Detectors with Novel Design

A set of Gas Electron Multiplier (GEM) detectors opimized for low material budget has been constructed for use in low-energy tracking applications. A novel GEM construction technique is used where all layers are stretched and assembled mechanically within a double frame. The readout is based on Analog Pipeline Voltage (APV) frontend cards and Multi-Purpose Digitizers (MPD). The key features of these detectors allow them to be used very flexibly in high­-rate environments for high-resolution charged particle tracking. The present status of the construction and performance of the GEM detectors will be discussed.