Artículo
Study of Ionization Charge Density-Induced Gain Suppression in LGADs
Autor/es | Jiménez Ramos, María del Carmen
García López, Francisco Javier García Osuna, Adrián Vila, Iván Currás, Esteban Jaramillo, Richard Hidalgo, Salvador Pellegrini, Giulio |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2022 |
Fecha de depósito | 2022-03-21 |
Publicado en |
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Resumen | Gain suppression induced by excess carriers in Low Gain Avalanche Detectors (LGADs) has been investigated using 3 MeV protons in a nuclear microprobe. In order to modify the ionization density inside the detector, Ion Beam ... Gain suppression induced by excess carriers in Low Gain Avalanche Detectors (LGADs) has been investigated using 3 MeV protons in a nuclear microprobe. In order to modify the ionization density inside the detector, Ion Beam Induced Current (IBIC) measurements were performed at different proton beam incidence angles between 0◦ and 85◦. The experimental results have been analyzed as a function of the ionization density projected on the multiplication layer, finding that the increase of ionization density leads to greater gain suppression. For bias voltages close to the gain onset value, this decrease in gain results into a significant distortion of the transient current waveforms measured by the Time-Resolved IBIC (TRIBIC) technique due to a deficit in the secondary holes component. For angles of incidence such that the Bragg peak falls within the sensitive volume of the detector, the formation of microplasmas modifies the behavior of the gain curves, producing an abrupt decrease in gain as the angle increases. |
Identificador del proyecto | RTI2018-098117-B-C21
10.13039/501100011033 ICTS-2020-02-US-4 US-1380791 FPA2017-85155-C4-1-R FPA2017-85155-C4-2-R |
Cita | Jiménez Ramos, M.d.C., García López, F.J., García Osuna, A., Vila, I., Currás, E., Jaramillo, R.,...,Pellegrini, G. (2022). Study of Ionization Charge Density-Induced Gain Suppression in LGADs. Sensors, 22 (3), 1080. |
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