  The PANDA experiment at the FAIR facility adresses open questions in hadron
physics with antiproton beams in the momentum range of 1.5-15 GeV/c. The
antiprotons are stored and cooled in a High Energy Storage RING (HESR) with a
momentum spread down to Dp/p = 4*10^-5. A high luminosity of up to 2*10^32 cm-2
s-1 can be achieved. An excellent hadronic particle identification (PID) will
be provided by two Cherenkov detectors using the priciple of Detection of
Internally Reflected Cherenkov light (DIRC). In the forward direction from
polar angles of 5 degree to 22 degree, the Endcap Disc DIRC (EDD) separates
pions from kaons up to momenta of 4 GeV/c. Between 22 degree and 140 degree the
Barrel DIRC cleanly separates pions from kaons for momenta up to 3.5 GeV/c.
This article describes the design of the Barrel DIRC and of the Endcap Disc
DIRC and the validation of their designs in particle beams at the CERN PS.
