ATLAS muon Endcap MDT Chamber performance

The test of the 432 ATLAS endcap monitored drift tube chambers of the muon spectrometer is completed. The results for almost 150,000 channels and more than 10,000 between electronic cards and temperature or magnetic field sensors are presented. In the certification of these chambers, a common set of procedures and requirements was adopted, so that the compliance with ATLAS specifications and a high level of uniformity is clearly visible from the data analysis results.