Progress on lattice light shift evaluations in the JILA 1D strontium optical lattice clock

We have rebuilt the JILA Sr1 optical lattice clock including an intra-vacuum build-up optical cavity for a 1D lattice. The system is designed for robust operation to support an all-optical time scale, and to advance the state-of the-art in lattice clock performance. The design goals include clock stability better than 3x10$^{\mathrm{-17}}$ at 1 s, and clock uncertainty better than 1x10$^{\mathrm{-18}}$. In this talk we will report on our progress evaluating lattice light shifts in this system and will discuss our work on reporting the necessary atomic coefficients for improved accuracy.