Disruptions–sudden losses of plasma confinement–pose a major threat to the viability of reactor- scale tokamaks, potentially causing severe thermal/mechanical damage and generating runaway electron (RE) beams. Accurate modelling of these events is essential for evaluating mitigation strategies. The ITER baseline approach to disruption mitigation relies on shattered pellet injec- tion (SPI). Using the DREAM simulation framework [1], we self-consistently model the evolution of poloidal magnetic flux, current density, ion charge states, temperatures, thermal electron tem- perature, and runaway electron density within a flux surface-averaged fluid description of the plasma. This study investigates the impact of deuterium–neon SPI on disruption dynamics in ASDEX Upgrade. We employ a probabilistic approach in generating distributions of both the fragment mass [2, 3] and velocity, for which statistical variations are assessed by perform- ing multiple simulations with different realisations. Results show good agreement with exper- imental current quench rates and radiated energy fractions, with increased statistical variance is observed at low neon injection fractions (≲1 %). Ongoing work into the role of background impurities in pure deuterium pellets is discussed. References: [1] M. Hoppe, O. Embreus, T. Fülöp, Computer Physics Communications 268 (2021) [2] P. Parks, Technical Report GA-A28352, General Atomics (2016) [3] T.E. Gebhart, L.R. Baylor, S.J. Meitner, IEEE transactions on plasma science 48.6 (2019)