In CdTe X-ray photon counting detectors (PCD) featuring small pixel sizes (<100µm), charge-sharing and fluorescences emitted by Cd and Te are responsible for multiple counts from a single interacting photon. These effects can impair the imaging and spectroscopic performance of PCDs. Multiple counts can be partially or totally discriminated by properly setting the energy threshold implemented by the PCD system. Using monochromatic radiation and the Pixirad-1/Pixie-II CdTe PCD, this work characterizes and quantifies clusters of multiple counts as a function of energy and threshold.
Characterization of charge sharing and fluorescence effects by multiple counts analysis in a Pixie-II based detection system / Delogu, P.; Di Trapani, V.; Golosio, B.; Longo, R.; Rigon, L.; Oliva, P.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 1047:(2023). [10.1016/j.nima.2022.167874]
Characterization of charge sharing and fluorescence effects by multiple counts analysis in a Pixie-II based detection system
Golosio B.;Oliva P.
2023-01-01
Abstract
In CdTe X-ray photon counting detectors (PCD) featuring small pixel sizes (<100µm), charge-sharing and fluorescences emitted by Cd and Te are responsible for multiple counts from a single interacting photon. These effects can impair the imaging and spectroscopic performance of PCDs. Multiple counts can be partially or totally discriminated by properly setting the energy threshold implemented by the PCD system. Using monochromatic radiation and the Pixirad-1/Pixie-II CdTe PCD, this work characterizes and quantifies clusters of multiple counts as a function of energy and threshold.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
