  We use ALMA measurements of 870 $\mu$m thermal emission from a sample of
mid-sized (15-40 km diameter) Jupiter Trojan asteroids to search for high
albedo objects in this population. We calculate the diameters and albedos of
each object using a thermal model which also incorporates {contemporaneous}
Zwicky Transient Facility photometry to accurately measure the absolute
magnitude at the time of the ALMA observation. We find that while many albedos
are lower than reported from WISE, several small Trojans have high albedos
independently measured both from ALMA and from WISE. The number of these high
albedo objects is approximately consistent with expectations of the number of
objects that recently have undergone large-scale impacts, suggesting that the
interiors of freshly-crated Jupiter Trojans could contain high albedo materials
such as ices.
