Large area Silicon Drift Detectors are employed in high sensitivity tests of the Pauli Exclusion Principle by the VIP-2 Collaboration. The experiment is operated in the extremely low cosmic background environment of the Gran Sasso underground National Laboratory of INFN. In this work an off-line analysis method is proposed which provides an additional background reduction, as well as a better calibration procedure. The study concerns in particular the charge sharing between nearby cells, and is applied to the data set collected during the 2018 VIP-2 campaign. The cross-talk effect inside the detectors array is described and an effective topological method to reject the background induced by charge sharing is outlined.
Topological charge-sharing background reduction for the Silicon Drift Detectors used by the VIP experiment at LNGS / Miliucci, M., Piscicchia, K., Bazzi, M., Bragadireanu, M., Cargnelli, M., Clozza, A., De Paolis, L., Del Grande, R., Guaraldo, C., Iliescu, M., Laubenstein, M., Marton, J., Milotti, E., Napolitano, F., Porcelli, A., Scordo, A., Sgaramella, F., Sirghi, D.L., Sirghi, F., Doce, O.V., et al.. - In: APPLIED RADIATION AND ISOTOPES. - ISSN 0969-8043. - ELETTRONICO. - 197/2023:(2023), pp. 110822.1-110822.6. [10.1016/j.apradiso.2023.110822]
Topological charge-sharing background reduction for the Silicon Drift Detectors used by the VIP experiment at LNGS
Milotti, Edoardo;
2023-01-01
Abstract
Large area Silicon Drift Detectors are employed in high sensitivity tests of the Pauli Exclusion Principle by the VIP-2 Collaboration. The experiment is operated in the extremely low cosmic background environment of the Gran Sasso underground National Laboratory of INFN. In this work an off-line analysis method is proposed which provides an additional background reduction, as well as a better calibration procedure. The study concerns in particular the charge sharing between nearby cells, and is applied to the data set collected during the 2018 VIP-2 campaign. The cross-talk effect inside the detectors array is described and an effective topological method to reject the background induced by charge sharing is outlined.| File | Dimensione | Formato | |
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