  In this paper we present a study of in-medium jet modifications performed
with JEWEL and PYTHIA 6.4, focusing on the uncertainties related to variations
of the perturbative scales and nuclear parton distribution functions (PDFs) and
on the impact of the initial and crossover temperature variations of the
medium. The simulations are compared to LHC data for the jet spectrum and the
nuclear modification factor. We assess the interplay between the choice of
nuclear PDFs and different medium parameters and study the impact of nuclear
PDFs and the medium on the jet structure via the Lund plane.
