This proposal is to examine the morphology and anisotropy of the flux-line lattice in Ca3Ir4Sn13 single crystals with the intention of understanding how the superconductivity in this material is influenced by the presence of magnetic fluctuations as illustrated by a peak at 45 K in the susceptibility and features in the resistivity to determine whether an experiment is possible on this system under pressures of up to 5 GPa to understand the enhancement of the superconductivity by the suppression of these magnetic fluctuations by the application of pressure. This study would also compare the fluxline lattice in this material with the previous ILL thesis work of Simon Levett who examined the properties of Ca3Rh4Sn13, which is a similar material, but without any magnetic fluctuations.