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The finite temperature chiral and deconfinement phase transitions at zerodensity for light and heavy quarks, respectively, have analytic continuationsto imaginary chemical potential. At some critical imaginary chemical potential,they meet the Roberge-Weiss transition between adjacent $Z(3)$ sectors. Forlight and heavy quarks, where the chiral and deconfinement transitions arefirst order, the transition lines meet in a triple point. For intermediatemasses chiral or deconfinement transitions are crossover and the Roberge-Weisstransition ends in a second order point. At the boundary between these regimesthe junction is a tricritical point, as shown in studies with $N_f=2,3$ flavorsof staggered and Wilson quarks on $N_\tau=4$ lattices. Employing finite sizescaling we investigate the nature of this point as a function of quark mass for$N_f=2$ flavors of Wilson fermions with a temporal lattice extent of$N_\tau=6$. In particular we are interested in the change of the location oftricritical points compared to our ealier study on $N_\tau=4$.

The nature of the Roberge-Weiss Transition in $N_f=2$ QCD with Wilson Fermions on $N_\tau=6$ lattices