  We present the investigation of the use of Opticks, a GPU-accelerated optical
photon interface with the LHCb detector simulation, to improve computation time
of optical photon propagation. The hybrid workflow, combining the particle
simulation package Geant4 and Opticks, offloads optical photon propagation to
GPUs, thereby accelerating the overall simulation process. The consistency of
the results obtained from Geant4 and Opticks simulations is verified with a
simplified LHCb RICH 1 detector geometry, demonstrating the feasibility of the
proposed approach. In addition, the ongoing transition to the NVIDIA OptiX 7
API and re-structuring of Opticks code is discussed within the context of HEP
simulation workflows, with caveats explored.
