This documents describes the technical design and the
expected performance of the Barrel DIRC detector for
the PANDA experiment.
The Barrel DIRC will provide hadronic charged particle
identification in the polar angle range of 22 to 140 deg
for particle momenta between 0.5 GeV/c and 3.5 GeV/c.
The design is based on the successful BaBar DIRC with
several key improvements.
The performance and system cost were optimized in
detailed detector simulations and validated with full
system prototypes using particle beams at GSI and CERN.
The final design meets or exceeds the PID goal of clean pi/K
separation with at least 3 standard deviations over the
entire phase space of charged kaons in the Barrel DIRC.