Characterization and simulation results of a two/three-layer compton telescope with LaBr3 and SiPMs

A three layer Compton telescope for dose monitoring in hadron therapy has been developed at IFIC. It consists of three detector layers and each layer is made of a continuous LaBr3 crystal coupled to four silicon photomultiplier (SiPMs) arrays. A dedicated image reconstruction method has also been developed. The telescope has been characterized and tested with radioactive sources and in-beam. Simulations with GATE have been carried out in order to optimize the detector geometry and response. Ongoing work is mainly focused on performance optimization and on the simultaneous acquisition and processing of two- and three-layer interaction events.