Agenda 1. Costs * travel currently £26k 2. Milestones * M4.1 Geant4 simulations of bema energy deposition profile M18 * M4.2 Acoustic sensor array design M24 * M4.3 Iterative reconstruction methods M42 * M4.4 Integration:ultra-sonic array with radiobiology station M48 * M4.5 LhARA ion-acoustic test results M60 3. Risk 4. AOB