  The high $P_T$ trigger capabilities of the ALICE inner tracking system (ITS)
as a standalone detector have been investigated. Since the high $P_T$ charged
particles mostly lead to the linear trajectories within this ITS sector, it is
possible to select tracks of $P_T$ of the order of 2 GeV and above by confining
to a narrow search window in the ($\theta,\phi$) space. Also shown that by
performing a principal component transformation, it is possible to rotate from
a 12 dimensional ($\theta$-$\phi$) space (in this space, a good ITS track has 6
pairs of hit co-ordinates) into a parametric space characterized by only two
independent components when the track momentum exceeds a particular limit. This
independent component analysis (ICA) has been uitilised further to reduce the
false track contribution to an acceptable level particularly when the charged
multiplicity is large. Finally, it is shown that with a narrow bin width of
$\Delta \theta = \Delta \phi \sim 0.008$ radian and with PCA or ICA cut, the
ITS can be used to trigger the jet particles with $P_T \ge 2 $ GeV. Apart from
triggering these high $P_T$ particles, this method can also be used to estimate
the initial momentum of the high $P_T$ tracks for seeding which can be further
prolonged into the TPC detector both for offline and online Kalman tracking or
even to detect those high $P_T$ tracks of rare events which might get lost in
the TPC-TRD dead zone.
