Electron internal transport barrier (ITB) formation is observed during fully non-inductive LHCD discharges on Alcator C-Mod. The formation is characterized by an abrupt increase of the central electron temperature after a few current penetration time has passed following LHCD turn-on. The ITB phase is often terminated by m(velence)2 mode activity. Kinetic equilibrium reconstruction and TRANSP/LSC analysis show shear reversal in the q profile during the ITB phase. TRANSP/LSC predictive analysis suggests that f_(BS) approx 60percent is possible if a similar temperature gradient is maintained at r/a(approx)0.5 with H-factor of 1.
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