Performance of the Forward Drift Chambers for the DO detector

The Forward Drift Chambers (FDCs) provide tracking in the forward region for the D0L experiment at Fermilab. The chambers must perform precision track position measurement in a high multiplicity environment. These chambers were extensively tested in the Fermilab NWA test beam area, in beams of 10-150 GeV pions and electrons. Measurements included the position resolution, hit finding efficiency, two track resolution, and ionization measurement resolution. The results of these tests are presented. These tests demonstrate that the chambers are able to perform the tasks for which they were designed. The chambers have now been installed in the D0L experiment and are participating in the current Tevatron collider run.<
>