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Título: | Impact of charge collection efficiency and electronic noise on the performance of solid-state 3D microdetectors |
Autor: | Prieto-Pena, Juan; Gómez, Faustino; Guardiola Salmerón, Consuelo; Jiménez-Ramos, M. C. CSIC ORCID; García López, J. CSIC ORCID; Baratto-Roldan, Anna CSIC ORCID; Baselga, M.; Pardo-Montero, J.; Fleta, Celeste CSIC ORCID | Fecha de publicación: | 2020 | Editor: | IOP Publishing | Citación: | Physics in Medicine and Biology 65(17): 175004 (2020) | Resumen: | Microdosimetry has been traditionally performed through gaseous proportional counters, although in recent years different solid-state microdosimeters have been proposed and constructed for this task. In this paper, we analyze the response of solid-state devices of micrometric size with no intrinsic gain developed by CNM-CSIC (Spain). There are two major aspects of the operation of these devices that affect the reconstruction of the probability distributions and momenta of stochastic quantities related to microdosimetry. For micrometric volumes, the drift and diffusion of the charge carriers gives rise to a partial charge collection efficiency in the peripheral region of the depleted volume. This effect produces a perturbation of the reconstructed pulse height (i.e. imparted energy) distributions with respect to the actual microdosimetric distributions. The relevance of this deviation depends on the size, geometry and operating conditions of the device. On the other hand, the electronic noise from the single-event readout set-up poses a limit on the minimum detectable lineal energy when the microdosimeter size is reduced. This article addresses these issues to provide a framework on the physical constraints for the design and operation of solid-state microdosimeters. | Descripción: | HAL Id: hal-02540667 | Versión del editor: | https://doi.org/10.1088/1361-6560/ab87fa | URI: | http://hdl.handle.net/10261/237589 | DOI: | 10.1088/1361-6560/ab87fa | E-ISSN: | 1361-6560 |
Aparece en las colecciones: | (CNA) Artículos (IMB-CNM) Artículos |
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