The performances of the detector were within the expectations. We did not encounter any problems during the test beam DAQ sessions: the prototype resisted and detected both muon and pion beams of various intensities.\\

As expected, the use of CF\subscript{4} improves the time response of the detector, even if its fields and internal structure\footnote{Most of all, the height of the internal gaps.} are left unchanged. In order to get even better performances, a revision is needed of the detector design (including its high voltage divider). This might be achieved by joining our efforts with the CMS experiment and the group of A. Sharma, whose recent studies were in the same direction as ours.\\

According to the manufacturers, the difficulties encountered during the assembly do not justify the advantage of splicing GEM foils together in order to cover larger areas and thus to reduce the number of detectors. For example, there are currently no proper machines for stretching large foils with an irregular shape.\\

As we will discuss in \chaptername~\ref{totem}, we needed to test if the detector, with its large capacitance readout electrodes, could work efficiently with the TOTEM readout system. The initial intense noise was removed by improving the chip grounding on the detector. Additional VFAT2 features, such as \textit{TrimDAC}, may be used in order to improve the global $SNR$ ratio.\\

As a final remark, it should be mentioned that these deep investigations were made possible thanks to the RD51-GDD tracker telescope, which could largely improve the resolution and comprehension of the data we collected.