Proton Interaction Vertex Imaging With Silicon-Pixel CMOS Telescope For Carbon Therapy Quality Control

Monitoring of the dose deposition during carbon ion therapy is a crucial issue for the quality control of such treatments. Recent studies have demonstrated that an ion-range control with millimeter resolution is feasible on a pencil-beam basis in homogeneous targets with prompt gamma detection for proton beams and with Proton Interaction Vertex Imaging (PIVI) for carbon beams. The present communication aims at describing our last PIVI experimental results (HIT and GSI) on the influence on vertex distributions of both ion energy and tracking system angular position.