Results of mass testing of mini drift tubes for the D0 forward muon system

The procedures and results of mass testing of mini drift tubes in the course of their production for the D0 forward muon system (Tevatron, Fermilab) are described. High-voltage training, checking the stability and uniformity of signals induced by X rays, measuring the wire tension, and leak testing are included in the testing procedure. Owing to the fast and effective testing of detectors under conditions of mass production, the quality of the mini drift tubes is such that virtually no tubes are finally rejected during assembly of the detector system.