  A search for highly ionizing particles produced in proton-proton collisions
at 8 TeV center-of-mass energy is performed by the ATLAS collaboration at the
CERN Large Hadron Collider. The dataset used corresponds to an integrated
luminosity of 7.0 fb$^{-1}$. A customized trigger significantly increases the
sensitivity, permitting a search for such particles with charges and energies
beyond what was previously accessible. No events were found in the signal
region, leading to production cross section upper limits in the mass range
200--2500 GeV for magnetic monopoles with magnetic charge in the range
$0.5g_{D}<|g|<2.0g_{D}$, where $g_{D}$ is the Dirac charge, and for stable
particles with electric charge in the range $10<|z|<60$. Model-dependent limits
are presented in given pair-production scenarios, and model-independent limits
are presented in fiducial regions of particle energy and pseudorapidity.
