[en] I have the pleasure of reporting on the status of the DIRC particle identification sub-system of the BaBar Detector, running at the asymmetric B Factory at SLAC. The acronym DIRC stands for ''Detection of Internally Reflected Cherenkov Light.'' This device grows out of our group's experience with ring-imaging Cherenkov devices founded on a long partnership with Tom Ypsilantis and in particular with the CRID device for the SLD experiment. Blair Ratcliff had the brilliant idea of using the totally internally reflected Cherenkov light created in quartz bars, and transported out to the photon detectors by those same quartz bars, to provide excellent π, K, p particle identification in the momentum range important for the B Factory. His naming of this new instrument was aptly ''CRID'' spelled backwards. The detailed design, building and commissioning of the DIRC sub-system was the work of a large international collaboration of French and U.S. groups. The device has proven to be a very robust detector, with the promised performance essentially fully realized, and is being effectively utilized in almost all of the current BaBar physics analysis. The DIRC information combines with dE/dx information from the Drift Chamber and the silicon tracker to provide the hadronic particle identification information for the BaBar experiment. The Cherenkov angular separation of pions and kaons is shown in Figure 1, where one sees that an effective angular resolution of ∼2 mrad is required to provide a three sigma separation for the high momentum region, while at low energies the (dE/dx + DIRC) work very well. BaBar requires good particle identification for momentum up to about 4.2 GeV/c coming from two quite distinct tasks to be performed, in two quite separate momentum regions. One task is tagging of B's from the decay products, which typically have momentum below 2GeV/c and the second task is identifying exclusive few-body B decays, where the momenta are typically between 1.7. and 4.2 GeV/c. BaBar also imposes constraints of radiation robustness on the technology of choice (the DIRC region will enjoy of order 10 krads of radiation dose over a ten-year lifetime), and of minimal radiation length in front of the CsI calorimeter (e.g. < 20% of a radiation length) which hopes to measure low energy photons down to energies of ∼20 MeV