Implementation of the P¯ANDA Planar-GEM tracking detector in Monte Carlo simulations

The P¯ANDA experiment at FAIR will be performed to investigate different aspects of hadron physics using anti-proton beams interacting with a fixed nuclear target. The experimental setup consists of a complex series of detector components covering a large solid angle. A detector with a gaseous active media equipped with gas electron multiplier (GEM) technique will be employed to measure tracks of charged particles at forward direction in order to achieve a high momentum resolution. In this work, a full setup of the GEM tracking detector has been implemented in the P¯ANDA Monte Carlo simulation package (PandaRoot) based on the current technical and conceptual design, and the expected performance of the P¯ANDA GEM-tracking detector has been investigated. Furthermore, material-budget studies in terms of the radiation length of the P¯ANDA GEM-tracking detector have been made in order to investigate the effect of the detector materials and its associated structures to particle measurements.