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ST: Fachverband Strahlen- und Medizinphysik

ST 6: Biomedical Imaging II and Radiation Therapy II

ST 6.4: Talk

Thursday, March 3, 2016, 11:45–12:00, VMP6 HS C

GEMPIX Detector: Towards Application in Microdosimetry and 3D Energy Deposition Measurements in Proton and Ion Therapy — Jerome Alozy¹, Alessandro Curioni^1,2, Stuart George^1,3, •Johannes Leidner^1,4, Fabrizio Murtas^1,5, Marco Silari¹, and Achim Stahl⁴ — ¹CERN, 1211 Geneva 23, Switzerland — ²Politecnico di Milano, 20133 Milano, Italy — ³University of Wollongong Centre for Medical Radiation Physics, Wollongong NSW 2522, Australia — ⁴III. Physikalisches Institut B, RWTH Aachen, 52064 Aachen, Germany — ⁵INFN LNF, 00044 Frascati, Italy

The GEMPIX is a Triple-GEM gas detector read out by a 55 µm pitch pixelated ASIC (the Timepix readout chip). It is operated as a highly compact (10 cm³) time projection chamber. Characterisation measurements with photons, alpha particles and relativistic protons will be presented. Future use of this detector as a microdosimeter and for measurements of the 3D energy deposition in a water phantom in proton and ion therapy is discussed.