  The CLAS Collaboration at Jefferson Lab conducted a photoproduction
experiment on a proton target using a tagged photon beam with an energy range
of 1.5-3.8 GeV during May-July 2004. With an integrated luminosity of about 75
$pb^{-1}$, this experiment provides the largest data set for photon-proton
reactions ever collected. The reaction $\gamma p \to K^+K^+\Xi^{-}(1320)$ has
been investigated and the preliminary results of the cross section measurement
of $\Xi^-(1320)$ for the photon energy range of 2.7-3.8 GeV have been obtained.
In a search for excited cascade states, the reaction of $\gamma p \to
K^+K^+\pi^-(\Xi^0(1320))$ has also been explored.
