Bonn 2020 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 2: Postersession - Medical Physics
ST 2.2: Poster
Dienstag, 31. März 2020, 17:00–18:00, Grotte
Event Processing for the SiFi-CC based on Geant4 Simulations — •Jonas Kasper1, Achim Stahl1, Ronja Hetzel1, Aleksandra Wronska2, Majid Kazemi-Kozuni2, Andrzej Magiera2, and Katarzyna Rusiecka2 — 1III. Physikalische Institut B, RWTH Aachen University, Aachen — 2Institute of Physics, Jagiellonian University, Kraków
In 2014 NuPECC listed online monitoring of the beam range in hadron therapy as one of the most important challenges in hadron therapy. Monitoring systems based on the detection of prompt gamma radiation are considered as one of the most promising options. A Compton Camera, yielding the full three-dimensional dose distribution, is one of the favoured detector setups. Scientist of the Jagiellonian University in Cracow and the RWTH Aachen University in Aachen develop the SiPM and scintillating Fiber-based Compton Camera (SiFi-CC) to detect prompt gamma radiation. The Compton Camera consists of two modules, the scatterer and the absorber. Both modules are built from stacked, heavy, scintillating fibers read out by SiPMs. Different setup approaches for the SiFi-CC are simulated with Geant4. Based on these simulations, an analysis and reconstruction chain is set up. The steps of the data processing are the reconstruction of the interactions in the detector on fiber level, building detector events from these fibers, sorting these events for the picture reconstruction and the reconstruction of the source distribution. The performance of the different steps based on the simulated response of the SiFi-CC to the radiation produced by the interactions of a proton beam in a PMMA phantom are presented.